Hubbry Logo
PsathyrellaceaePsathyrellaceaeMain
Open search
Psathyrellaceae
Community hub
Psathyrellaceae
logo
8 pages, 0 posts
0 subscribers
Be the first to start a discussion here.
Be the first to start a discussion here.
Psathyrellaceae
Psathyrellaceae
Psathyrellaceae
View on Wikipedia
from Wikipedia

Psathyrellaceae
Lacrymaria lacrymabunda
Scientific classification Edit this classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Psathyrellaceae
Vilgalys, Moncalvo & Redhead (2001)
Type genus
Psathyrella
(Fr.) Quél. (1872)
Genera

Britzelmayria
Coprinellus
Coprinopsis
Cystoagaricus
Gasteroagaricoides
Homophron
Hormographiella
Kauffmania
Lacrymaria
Macrometrula
Narcissea
Olotia
†Palaeocybe
Parasola
Psathyrella
Punjabia
Tulosesus
Typhrasa

The Psathyrellaceae are a family of dark-spored agarics that generally have rather soft, fragile fruiting bodies, and are characterized by black, dark brown, rarely reddish, or even pastel-colored spore prints. About 50% of species produce fruiting bodies that dissolve into ink-like ooze when the spores are mature via autodigestion. Prior to phylogenetic research based upon DNA comparisons, most of the species that autodigested were classified as Coprinaceae, which contained all of the inky-cap mushrooms. However, the type species of Coprinus, Coprinus comatus, and a few other species, were found to be more closely related to Agaricaceae. The former genus Coprinus was split between two families, and the name "Coprinaceae" became a synonym of Agaricaceae in its 21st-century phylogenetic redefinition. Note that in the 19th and early 20th centuries the family name Agaricaceae had far broader application, while in the late 20th century it had a narrower application. The family name Psathyrellaceae[1] is based on the former Coprinaceae subfamily name Psathyrelloideae. The type genus Psathyrella consists of species that produce fruiting bodies which do not liquify via autodigestion. Psathyrella remained a polyphyletic genus until it was split into several genera including 3 new ones in 2015.[2] Lacrymaria is another genus that does not autodigest. It is characterized by rough basidiospores and lamellar edges that exude beads of clear liquid when in prime condition, hence the Latin reference, lacryma (tears).

Most Psathyrellaceae basidiospores have germ pores, and the pigment in the spore walls bleaches when soaked in concentrated sulfuric acid. This contrasts with another phylogenetically unrelated dark-spored genus, Panaeolus. Psathyrellaceae are saprotrophs or rarely mycoparasites on other agarics (e.g. Psathyrella epimyces). They often occur in nitrogen-rich habitats such as dung, wet soft decayed wood, lawns and gardens.

Genera Coprinellus, Coprinopsis and Parasola

[edit]

Species in the genera Coprinellus, Coprinopsis and Parasola were until recently classified in the genus Coprinus, or in the case of a few Coprinellus species, in Pseudocoprinus. Based on molecular data, the genus Coprinus was divided, with these three genera moved to the family Psathyrellaceae. [1].

Coprinellus is a genus first described by Petter Karsten in 1879. Coprinopsis was split from the genus Coprinus based on molecular data. The species Coprinopsis cinerea is a model organism for mushroom-forming Basidiomycota as it has a complete genome sequence available and is easy to culture.

See also

[edit]

References

[edit]
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Psathyrellaceae

View on Grokipedia
from Grokipedia
Psathyrellaceae is a family of basidiomycete fungi in the order , consisting primarily of agaricoid with gilled fruiting bodies, dark brown to black spore prints, and often fragile, deliquescent tissues that autodigest into an inky fluid in many taxa. The family, established as Psathyrellaceae Locq. ex Locq. () and later emended by Vilgalys, Moncalvo & Redhead (), encompasses approximately 90% of all known deliquescing and is distinguished by its polyphyletic genus , which serves as a repository for numerous small, brown-spored agarics. Key genera within Psathyrellaceae include (over 400 species, often psathyrelloid with non-deliquescent gills), and Coprinellus (coprinoid with deliquescing lamellae), Parasola, and Lacrymaria, reflecting a diversity of morphologies from small, conical-capped mushrooms to larger, veil-bearing forms. Species exhibit convergent traits such as utriform cystidia, a hymeniderm pileipellis, and spores with a prominent germ pore, though autodigestion—mediated by enzymatic lysis—is a hallmark in coprinoid lineages but absent in many psathyrelloid ones. Ecologically, Psathyrellaceae are cosmopolitan saprotrophs, decomposing lignocellulosic substrates in terrestrial habitats worldwide, including decaying wood, litter, , grassy lawns, bogs, and dung, with peak fruiting in temperate and tropical regions during moist seasons. Their rapid development and autodigestion facilitate efficient dispersal, contributing to nutrient cycling in forest floors and urban greenspaces, though some face taxonomic challenges due to cryptic diversity revealed by molecular phylogenies.

Description

Macroscopic Features

Members of the Psathyrellaceae are typically small to medium-sized agarics characterized by fragile fruiting bodies with thin, brittle stipes and caps; many species, particularly in coprinoid genera such as , deliquesce into an inky liquid upon maturation, while psathyrelloid taxa often lack this trait. This autodigestion primarily affects the gills and cap margins in deliquescent species, contributing to the family's ephemeral nature, while the stipe usually persists. The overall texture is notably brittle, leading to rapid decay shortly after dispersal, which underscores their saprotrophic lifestyle. The (pileus) is generally convex to umbonate, measuring 1-10 cm in , and hygrophanous, changing color with moisture levels—often appearing darker when wet. Colors range from grayish-brown to dark brown, with striate margins visible under moist conditions due to translucent tissue. The surface is smooth to slightly fibrillose or scaly, emphasizing the delicate structure common to the . Gills (lamellae) are adnate to free, close to crowded, and initially pale before turning dark gray to blackish from the abundant dark ; in deliquescent species, they autodigest progressively from the margin inward. This darkening and liquefaction are key visible traits, though the spore pigmentation itself is detailed microscopically. The stem (stipe) is slender and fragile, typically 3-15 cm tall and 1-5 mm thick, hollow or stuffed, with a smooth to fibrillose surface that is usually pale. It often bears remnants from a , such as fibrillose patches or a fugacious annular zone. is typically mealy or indistinct, and taste mild, aligning with the unassuming external profile. A is present in some species, forming evanescent patches on the margin or a fragile ring on the stem, but it is often fugacious and leaves minimal traces. These features collectively highlight the family's adaptation for quick release in decaying .

Microscopic Features

The microscopic features of Psathyrellaceae are critical for distinguishing members of this family from other dark-spored agarics, particularly through the examination of basidiospores, reproductive structures, and tissue arrangements under light microscopy. Basidiospores in Psathyrellaceae are typically dark brown to black in mass, with spore prints ranging from dark brown to purplish brown or blackish, measuring 5-15 µm in length, and exhibit smooth or slightly rough surfaces; they are often elliptical to subglobose in shape, featuring a prominent hilar appendix and a distinct germ pore that facilitates germination. These spores are non-amyloid, lacking a positive reaction with iodine reagents, and their pigmentation arises from melanin-like compounds deposited in the spore walls. The spore pigments display metachromatic properties, shifting color under certain stains, and notably bleach when treated with concentrated (H2SO4), a reaction that helps differentiate Psathyrellaceae from families like Cortinariaceae, where pigments are more stable; in KOH, spores appear brown or dark gray. This bleaching occurs due to the solubility of the pigment granules in acidic solutions. Basidia are predominantly 4-spored, clavate in form, and range from 15-30 µm in length, with thin-walled sterigmata that bear the s; occasional 2- or 3-spored variants occur but are less common across the family. Cystidia are abundant and serve as key diagnostic elements: cheilocystidia and pleurocystidia are typically utriform to lageniform, measuring 30-60 µm tall, with necks often 5-10 µm wide and apexes that may bear crystalline appendages; these structures are , thin-walled, and project from the edges and faces, aiding in spore dispersal and species identification. The gill trama is irregular in organization, composed of loosely interwoven, hyphae without the radial elongation seen in families like , contributing to the fragile nature of the lamellae. The pileipellis varies between a cutis of repent, cylindrical hyphae or a hymeniform with erect, vesiculose elements, sometimes up to 50 µm tall in species with cellular layers; this arrangement often includes clamped connections at hyphal throughout the family.

Taxonomy

History

The genus Psathyrella was established by Lucien Quélet in 1872 to accommodate small, fragile agarics that superficially resembled species of Coprinus but lacked the deliquescent (auto-dissolving) lamellae characteristic of that genus. Prior to this, such taxa were often included within the broadly conceived family Coprinaceae sensu lato, which encompassed a diverse array of dark-spored, often coprophilous or lignicolous mushrooms with varying degrees of gill auto-digestion. In the early , many species now recognized as belonging to were misclassified or lumped into other genera, such as and Deconica, due to overlapping morphological features like dark s and collybioid habits, leading to taxonomic confusion in pre-molecular classifications. A significant advancement came with Rolf Singer's comprehensive 1986 The in Modern Taxonomy, which provided a detailed infrageneric classification of based on morphological traits, including shape, remnants, and preferences, while maintaining its placement within Coprinaceae. The family Psathyrellaceae was formally established in 2001 by Rytas Vilgalys, Jean-Marc Moncalvo, and Scott A. Redhead, drawing on preliminary molecular phylogenetic data (primarily sequences) that demonstrated the of Coprinaceae sensu lato and separated psathyrelloid taxa into a distinct , with designated as the . This reclassification narrowed the scope of Coprinaceae, which, following the transfer of sensu stricto to , became a of that family in 2001, thereby elevating the status of Psathyrellaceae as an independent lineage within the .

Current Classification

Psathyrellaceae is a family of fungi within the order , classified under the phylum , class . The family encompasses approximately 20 genera and over 2000 species, many of which exhibit fragile, deliquescing fruiting bodies with dark spores. The type genus is (Fr.) Quél., established in 1872. Significant taxonomic revisions have shaped the current framework, notably the 2015 multi-locus phylogenetic study by Örstadius et al., which demonstrated the of sensu lato and segregated it into multiple genera, including the introduction of three new ones: Kauffmania, Homophron, and Typhrasa. This work refined the boundaries of Psathyrellaceae by incorporating segregates from the former Coprinaceae, emphasizing molecular markers such as ITS, LSU, SSU, and RPB2. Recent 2025 updates further expand the family, with Yang et al. describing the new genus Cantonopsathyra and two new species, alongside Zheng et al. introducing Candolleomyces yunnanensis based on morphological and molecular evidence. The family is formally recognized in authoritative databases as of 2025, including Index Fungorum and MycoBank, which list Psathyrellaceae at the family rank with as the type. Ongoing molecular studies indicate potential further subdivisions among psathyrelloid species, particularly in unresolved clades within genera like and Candolleomyces.

Phylogeny

Molecular Studies

Early molecular studies on Psathyrellaceae utilized nuclear ribosomal DNA sequences, including the internal transcribed spacer (ITS) region and nuclear large subunit (nLSU) rDNA, to delineate the family's boundaries from Coprinaceae. In 2001, analyses of these markers revealed a distinct comprising and related genera, separate from the group, justifying the erection of Psathyrellaceae as a new family within . This work built on prior nLSU data showing strong phylogenetic support (≥90%) for the separation, highlighting the family's based on ribosomal gene divergence. A comprehensive multi-locus phylogenetic study in 2015 expanded this foundation by sequencing ITS, LSU, RPB1, RPB2, and EF1-α across more than 100 , employing and maximum likelihood methods. These analyses confirmed Psathyrellaceae as monophyletic within the suborder Agaricineae and demonstrated that s.l. is paraphyletic, necessitating taxonomic revisions. The study introduced three new genera—Homophron, Kauffmania, and Typhrasa—along with 18 new , refining the family's internal structure through robust tree topologies with high posterior probabilities and bootstrap support. Recent investigations in have further refined these phylogenies using multi-locus approaches in journals such as MycoKeys and Phytotaxa, confirming expansions in genera like Ephemerocybe and describing additional new species and one new genus within Psathyrellaceae. For instance, phylogenetic analyses incorporating ITS, LSU, and tef-1α sequences supported the delimitation of novel taxa and provided notes on Ephemerocybe's relationships, emphasizing ongoing resolution of generic boundaries. Although mitogenome data have been integrated in broader studies to explore deeper evolutionary relationships, their application to Psathyrellaceae remains preliminary, with nuclear markers continuing to dominate family-level inferences. Key findings across these works uphold the dark-spored clade's integrity but reveal internal diversity in genera such as , where subclades indicate potential for further taxonomic subdivision pending additional sampling.

Relationships to Other Families

Psathyrellaceae occupies a position within the order , forming part of the core dark-spored clade alongside , from which it diverged following the reclassification of certain species, such as , into the latter family based on molecular evidence. Recent multi-locus phylogenetic studies employing nuclear ribosomal and protein-coding genes have reinforced this placement, showing Psathyrellaceae as a distinct but sister lineage to the expanded , with shared evolutionary history in saprotrophic dark-spored agarics. These analyses, incorporating up to several dozen loci, highlight the family's within , distinct from more distant groups like the Tricholomataceae. Members of Psathyrellaceae share key traits with , including dark brown to black deposits and a predominantly saprotrophic on decaying , reflecting their common ancestry in nutrient-recycling niches. However, Psathyrellaceae is distinguished by its characteristically fragile basidiomata that often deliquesce and basidiospores featuring a prominent germ pore, adaptations not uniformly present in . In contrast to Galeropsidaceae, which includes coprophilous genera like lacking autodigestion (deliquescence) and typically exhibiting non-poroid, mottled spores, Psathyrellaceae emphasizes terrestrial saprotrophy with poroid spores and frequent tissue breakdown. Similarly, Bolbitiaceae differs through genera like and Bolbitius, which often display bulbous stipe bases, viscid or wrinkled pilei, and spores with rugulose ornamentation rather than the smooth, poroid forms typical of Psathyrellaceae. Phylogenetic reconstructions indicate that Psathyrellaceae arose from a common approximately 50–60 million years ago, coinciding with the diversification of major deliquescent lineages such as and Parasola during the Eocene, a period of rapid . Some species exhibit mycoparasitic tendencies, linking the family ecologically to hosts; for instance, epimyces deforms fruiting bodies of through tissue invasion. Recent multi-locus studies from 2025 further affirm the family's , supporting its stable placement amid ongoing refinements in taxonomy.

Ecology and Distribution

Habitat and Life Cycle

Psathyrellaceae species are predominantly saprotrophic fungi that colonize nitrogen-enriched substrates, including animal dung, decaying wood, grassy lawns, gardens, and disturbed soils, where they function as primary or secondary decomposers in terrestrial ecosystems. Many genera, such as and , exhibit a lignicolous or terricolous habit, breaking down complex polymers like and to facilitate nutrient cycling, while a subset are coprophilous, thriving on dung and contributing to the decomposition of organic waste in grasslands and pastures. Although most members are free-living saprotrophs, rare cases of mycoparasitism occur, as seen in Psathyrella epimyces, which parasitizes the fruiting bodies of other agarics like by deforming host tissues to extract nutrients. The life cycle of Psathyrellaceae follows the typical hymenogastralean pattern of basidiomycetes, beginning with colonization of suitable substrates through vegetative hyphae that often feature clamp connections for dikaryotic growth. Fruiting body formation, or basidiomata development, is typically triggered by environmental cues such as rainfall in cool, moist conditions, particularly during late summer to autumn in temperate regions, leading to rapid maturation within 1-3 days. Basidiospores, which possess a distinct germ pore for , are forcibly discharged from basidia on the gills and may deliquesce in many species, where the cap and gills autolyse into an inky fluid to prevent and enhance release in ephemeral habitats. Post-dispersal, germinated spores form monokaryotic hyphae that eventually fuse in mating to reestablish the dikaryotic , completing the cycle. These fungi exhibit short-lived basidiomata, lasting from hours to a few days, which aligns with their occupation of transient, nutrient-rich niches. dispersal occasionally involves interactions with , such as mycophagous that consume and excrete viable s, particularly in coprophilous where dung-inhabiting arthropods facilitate spread across landscapes. This mode supports their role in dynamics, recycling nutrients in disturbed or enriched environments while adapting to seasonal wet periods for .

Global Distribution

The family Psathyrellaceae exhibits a , with species recorded across all continents except . This widespread occurrence is attributed to the family's saprotrophic lifestyle, allowing adaptation to diverse substrates like decaying wood, dung, and . The greatest species diversity is concentrated in the temperate regions of the , particularly in , , and , where approximately 500 species of alone have been documented globally, with over 100 recognized in . In contrast, diversity is lower in tropical and subtropical zones, though the family is present in areas such as , , and , with new species discoveries expanding known ranges in these regions. Regional hotspots for Psathyrellaceae include urban and disturbed habitats worldwide, such as lawns, gardens, wood chips, and roadside verges, where species like candolleana thrive due to nutrient-rich, anthropogenic environments. In , high is evident in deciduous forests and grasslands, while in and , similar temperate ecosystems support dense populations. is notable in certain areas, with many species restricted to regional locales; for instance, recent studies have identified endemics in Yunnan Province, China, including Candolleomyces yunnanensis, highlighting localized diversity in Asian montane forests. Human activities have facilitated introductions, enabling some species to establish in non-native urban settings globally. Psathyrellaceae species predominantly occupy mesic to humid climatic zones, favoring moist soils and organic-rich substrates in forests, grasslands, and wetlands. Their altitudinal range spans from to elevations exceeding 2000 meters, as observed in highland collections from the and Asian plateaus. Threats to natural populations include habitat loss from , , and soil disturbance, particularly in hotspots like the Atlantic Forest and European grasslands; however, the family's resilience in anthropogenic sites often buffers overall declines.

Genera

Psathyrella

Psathyrella is the type genus of the family Psathyrellaceae, comprising approximately 400 species of small to medium-sized, collybioid to tricholomatoid agarics that are typically non- or partially deliquescent and grow as saprotrophs on wood or soil. These fungi are characterized by fragile basidiomata with a hygrophanous pileus that is usually campanulate to convex, measuring 1-5 cm in diameter, and often brown with striations when moist. The lamellae are adnexed to adnate, dark brown to blackish, and the stipe is slender, fragile, white to pale, and typically exannulate. Microscopically, the basidiospores are ovoid to ellipsoidal, smooth, thick-walled, 7-12 µm long, dark brown to blackish in deposit, and equipped with a prominent germ pore; cheilocystidia are always present and often prominent, while pleurocystidia may be absent or sparse, and clamp connections are common at basidia bases. Following phylogenetic revisions since 2015, the core Psathyrella (sensu stricto) has been delimited to around 200 species within the /Psathyrella clade, excluding segregate genera such as Coprinellus and Kauffmania, while retaining its cosmopolitan distribution across temperate and tropical regions as wood- or litter-decomposing saprotrophs. The genus exhibits high morphological diversity, with species varying in pileus texture from smooth to fibrillose and in habitat preferences from terrestrial litter to lignicolous clusters, though all share the non-ink-cap habit of persistent, non-deliquescent gills. No species are considered toxic, though they are generally regarded as inedible due to their fragile texture and insubstantial flesh. Representative species include Psathyrella candolleana, a common terrestrial form often found on dung or nutrient-rich in grasslands and woodlands, featuring a pale tan to whitish hygrophanous cap up to 4 cm broad and spores 8-10 × 4-5 µm. Another widespread example is Psathyrella piluliformis, which grows gregariously on stumps and decaying wood, distinguished by its chestnut-brown cap 2-5 cm across with veil remnants and subcylindrical spores 10-13 × 5-6 µm. Recent taxonomic work in 2025 has added variants and new descriptions, such as those related to Candolleomyces yunnanensis from subtropical Asian regions, highlighting ongoing refinements in species delimitation through molecular and morphological analyses.

Coprinopsis

Coprinopsis is a of mushrooms in the family Psathyrellaceae, comprising approximately 100 recognized as true ink-caps characterized by complete deliquescence of the gills, where the lamellae autodigest into a black, inky liquid at maturity to facilitate dispersal. These were transferred from the polyphyletic Coprinus in a major taxonomic revision in 2001, based on molecular phylogenetic analyses of nuclear sequences that placed them firmly within Psathyrellaceae, distinct from Coprinus sensu stricto in Agaricaceae. The was originally described by Petter Karsten in 1881 but revived and emended in this revision to encompass the clade featuring a hyphal pileipellis and specific veil structures. Morphologically, species typically exhibit caps measuring 2–10 cm in diameter, initially cylindrical to bell-shaped, often gray-brown in color, and expanding with age before deliquescing from the margin inward. The spores are smooth, dark brown to black, measuring 8–15 µm in length, distinctly truncate at the end due to a broad germ pore, and produced on basidia with abundant cheilocystidia and usually pleurocystidia present on the edges and faces. This full autodigestion of the gills contrasts with the partial deliquescence seen in Coprinellus species, which have non-truncate spores lacking such a prominent germ pore. The diversity of Coprinopsis centers on saprotrophic species primarily associated with dung or decaying wood, with many coprophilous forms thriving in nutrient-rich, disturbed habitats like grasslands and pastures, while others are lignicolous on stumps or buried wood in forests and urban areas. Some species, such as Coprinopsis atramentaria, are considered edible when young but cause severe alcohol intolerance due to the mycotoxin coprine, which inhibits aldehyde dehydrogenase and leads to symptoms resembling disulfiram reactions if alcohol is consumed within 48–72 hours. Representative examples include Coprinopsis atramentaria, a common medium-sized species (cap up to 7 cm) forming dense clusters on wood or soil, and Coprinopsis lagopus, a larger ink-cap (up to 15 cm tall) with woolly stem scaling, often solitary on dung; smaller species like Coprinopsis variegata grow in clusters on wood debris, featuring scaly caps under 3 cm. Unlike the grassland-specialized, diminutive Parasola species, Coprinopsis taxa are generally larger and more tied to organic-rich substrates like dung and wood. Recent molecular studies in 2025 have confirmed distinct subclades within , particularly in complexes like the Coprinopsis alnivora group, using ITS and LSU sequence data to delineate new such as C. austrolilacina and C. persicina based on phylogenetic divergence and subtle morphological variations in and traits. These analyses reinforce the genus's and highlight ongoing taxonomic refinements driven by genomic evidence.

Coprinellus

Coprinellus is a of approximately 80 of small, fragile agarics within the family Psathyrellaceae, distinguished by the presence of a granular or mealy that leaves mica-like remnants on the surface and partial deliquescence of the gills, where the lamellae liquefy but the cap does not fully autodigest. These mushrooms are saprotrophic decomposers, typically fruiting in dense clusters or troops on decaying , litter, , or occasionally dung, contributing to in and ecosystems. The genus was established to accommodate species previously placed in section Micacei, emphasizing their veil anatomy and lack of complete auto-digestion compared to related genera. Morphologically, Coprinellus species feature caps measuring 1–3 cm in diameter, often conical to bell-shaped when young, expanding to convex with age, and colored in shades of reddish-brown, tawny, or , adorned with fine, glistening granular scales from the . Stipes are slender, 3–10 cm tall and up to 0.5 cm thick, white to pale, and fibrillose, sometimes with a basal mycelial mat. Gills are close, adnate to , initially pale but turning grayish-black as they deliquesce from the margin inward. Microscopically, basidiospores are dark brown to blackish, smooth, ovoid to mitriform, measuring 6–11 × 4–7 µm, with a small central germ pore; cystidia are abundant on the edges and cap surface, aiding in formation. These traits, particularly the remnants and spore morphology, differentiate Coprinellus from smoother-capped relatives. The genus exhibits significant diversity, with species adapted to temperate and subtropical habitats worldwide, often forming extensive, radiating clusters that enhance dispersal. Notable examples include , the common fairy inkcap, which is widespread on buried or grassy areas, produces small but fruitbodies (though of limited culinary value due to bitterness and size), and features prominent mica-like granules on its honey-brown cap. Another representative is Coprinellus radians, recognized for its dense, radiating troops on or , with elliptical s around 7 × 4 µm and a smooth, brownish cap lacking heavy veiling. , or firerug inkcap, stands out for its taller, slender stature (stipe 4–10 cm), grayish-brown bell-shaped cap up to 4 cm, and striking orange mycelial mat on substrates like burned or litter. Phylogenetic analyses, based on multi-locus data including ITS, LSU, and β-tubulin sequences, divide Coprinellus into major clades such as Domestici/Micacei (with veiled species) and Setulosi (setulose or haired forms), though sections are not always monophyletic. Recent studies in , particularly a 2024 investigation of the "fairy inkcap" complex in , have highlighted substantial undescribed diversity, identifying nine lineages across 17 provinces, including four new (C. aureodisseminatus, C. austrodisseminatus, C. parcus, C. velutipes) and a new (C. disseminatus subsp. orientalis), with high (Fst > 0.7) underscoring the region's subtropical richness. These findings, drawn from 74 collections spanning 1998–2023, emphasize Coprinellus's evolutionary adaptability in Asian ecosystems.

Parasola

Parasola is a of small, veil-less coprinoid mushrooms in the family Psathyrellaceae, comprising approximately 30–40 recognized worldwide, though taxonomic revisions continue to refine this number. These minute agarics superficially resemble diminutive but are distinguished by partial deliquescence of the gills rather than full auto-digestion of the fruitbody. They are saprotrophic fungi that decompose and are commonly encountered in grasslands and lawns. Morphologically, Parasola species feature caps typically less than 2 cm in diameter, convex to subcylindrical when young, often pale brown to ochraceous, and translucent-striate due to their hygrophanous tissue, which reveals the underlying gills as radiating lines. The gills are free or nearly so, sometimes with auriculate attachment (a small ear-like connection to the stipe), crowded and ventricose, starting whitish and turning grayish-black as they mature and partially dissolve. Basidiospores measure 7–10 µm (varying by , e.g., 7.0–10.8 × 5.8–9.8 µm in some), dark reddish-brown, often angular (ovoid to heart-shaped) with a central or eccentric germ pore and a characteristic plage—a darker spot near the hilum. These fungi thrive in urban and suburban environments, including lawns, paths, and disturbed grasslands, as well as coprophilous (dung-associated) or terricolous (soil-inhabiting) habitats, contributing to cycling in grassy areas. They are generally considered non-edible due to their small size and fragile nature. Representative species include , noted for its golden to orange-brown cap with a central umbo and long reddish hairs, often found in woodchip or grassy edges; and Parasola conopilea, characterized by a conical, reddish-hygrophanous cap and yellowish stipe, commonly reported across on lawns and meadows. Recent taxonomic studies have expanded the genus, with additions from 2023–2025 including Parasola papillatospora, a saprotroph from in temperate deciduous forests of (e.g., under oaks and beeches), distinguished by its papillate-apex spores and variable shapes; and eight new species from , highlighting ongoing diversity in through morphological and molecular analyses. These updates underscore Parasola's global distribution and adaptability to varied microhabitats.

Other Genera

In addition to the core genera , , Coprinellus, and Parasola, the Psathyrellaceae encompasses approximately 20 genera overall, many resulting from segregations of the historically polyphyletic , contributing to a family diversity of nearly 2000 species. These minor genera highlight the family's morphological and ecological variability, often featuring specialized traits that distinguish them from the typical agaricoid forms dominant in the major genera. Among these, Candolleomyces represents a key segregate, characterized by the absence of pleurocystidia and dark-spored basidiomata typically found in soil as saprobes; recent discoveries include two new species from described in 2025, further emphasizing their role as terrestrial decomposers in Asian ecosystems. Lacrymaria stands out for its lacrimose gills, which exude tear-like droplets of dark liquid when moist, a feature linked to its hygroscopic s and aiding in spore dispersal. Ephemerocybe exemplifies short-lived fruiting bodies, with 2025 phylogenetic notes clarifying its position and underscoring the ephemeral nature of its agaricoid structures in damp habitats. Other notable minor genera include Gasteroagaricoides, which exhibits secotioid, puffball-like basidiomata with enclosed gills and powdery spore masses, diverging from the open-hymenophore typical of agaricoid members. Olotia, a monotypic genus, features robust, pigmented cystidia and is adapted to specialized microhabitats, contributing to the family's underrepresented diversity in non-agaricoid forms. A 2025 study in Phytotaxa introduced the new genus Cantonopsathyra with two species from southern , expanding Asian representation through phylogenetic analyses of psathyrelloid clades. The significance of these minor genera lies in their revelation of ongoing taxonomic challenges, as molecular data continue to uncover unresolved within smaller groups, prompting further refinements to family boundaries and emphasizing the need for integrated morphological and genetic approaches.

References

  1. https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=184208
  2. https://group.szbk.u-szeged.hu/sysbiol/data/nagy-laszlo-lab/papers/Nagy_2010_MPE.pdf
  3. https://www.indexfungorum.org/Names/familyrecord.asp?strRecordID=82127
  4. https://www.sciencedirect.com/science/article/abs/pii/S1055790307003892
  5. https://pdfs.semanticscholar.org/08d8/61947d94ecfd6ebfd7052e3de93ce74e64fe.pdf
  6. https://mycokeys.pensoft.net/article/85690/
  7. https://doi.org/10.1016/j.ympev.2010.08.022
  8. https://doi.org/10.1007/s11557-015-1047-x
  9. https://doi.org/10.1007/s11557-012-0857-3
  10. https://keycouncil.svims.club/council/Psathy.htm
  11. https://mycokeys.pensoft.net/article/31415/
  12. https://www.mycosphere.org/pdf/MC4_3_No13.pdf
  13. https://fuse-journal.org/images/Issues/Vol3Art5.pdf
  14. https://www.mushroomexpert.com/psathyrella.html
  15. https://www.sbs.utexas.edu/mycology/bio329/pdf_files/Mushroom_hand2.pdf
  16. https://pmc.ncbi.nlm.nih.gov/articles/PMC8172522/
  17. https://mycokeys.pensoft.net/article/24704/
  18. https://www.researchgate.net/publication/240299754_Species_Diversity_of_the_Genus_Psilocybe_Basidiomycotina_Agaricales_Strophariaceae_in_the_World_Mycobiota_with_Special_Attention_to_Hallucinogenic_Properties
  19. https://books.google.com/books/about/The_Agaricales_in_Modern_Taxonomy.html?id=AtlOAQAAIAAJ
  20. https://onlinelibrary.wiley.com/doi/abs/10.2307/1224525
  21. https://www.davidmoore.org.uk/21st_Century_Guidebook_to_Fungi_PLATINUM/REPRINT_collection/Redhead_etal_Coprinus_taxonomy2001.pdf
  22. https://www.gbif.org/species/4184
  23. https://www.mycobank.org/details/708/34492
  24. https://link.springer.com/article/10.1007/s11557-015-1047-x
  25. https://phytotaxa.mapress.com/pt/article/view/53122
  26. https://phytotaxa.mapress.com/pt/article/view/53661
  27. https://www.indexfungorum.org/names/NamesRecord.asp?RecordID=82127
  28. https://mycokeys.pensoft.net/article/141766/
  29. https://mycokeys.pensoft.net/article/157282/
  30. https://www.researchgate.net/publication/257694659_Morphological_characterization_of_clades_of_the_Psathyrellaceae_Agaricales_inferred_from_a_multigene_phylogeny
  31. https://www.researchgate.net/publication/379670971_Studies_in_the_Panaeolus_papilionaceus_complex_Agaricales_Galeropsidaceae_two_new_species_discovered_in_the_Dominican_Republic_and_Australia_Mycological_Observations_-_MycolObs
  32. https://www.mdpi.com/2309-608X/11/1/45
  33. https://academic.oup.com/sysbio/article/60/3/303/1665734
  34. https://pmc.ncbi.nlm.nih.gov/articles/PMC8510539/
  35. https://www.creamjournal.org/pdf/Cream_5_2_6.pdf
  36. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0049777
  37. https://pmc.ncbi.nlm.nih.gov/articles/PMC98996/
  38. https://andrewsforest.oregonstate.edu/pubs/pdf/pub1757.pdf
  39. https://www.sciencedirect.com/science/article/abs/pii/S095375620800107X
  40. https://www.researchgate.net/publication/343655186_A_New_Tropical_Species_of_Psathyrella_Psathyrellaceae_Agaricales_From_the_Cuc_Phuong_National_Park_Vietnam
  41. https://www.researchgate.net/publication/394277190_Two_new_species_of_the_Coprinopsis_alnivora_Psathyrellaceae_Agaricales_complex_from_Australia_Coprinopsis_austrolilacina_in_rhacophylloid_stage_and_Coprinopsis_persicina_in_agaricoid_stage
  42. https://www.jstor.org/stable/2807012
  43. https://burkeherbarium.org/imagecollection/browse.php?Family=Psathyrellaceae
  44. https://www.mykoweb.com/CAF/species/Psathyrella_corrugis.html
  45. https://www.inaturalist.org/posts/6866-genera-and-species-within-the-psathyrellaceae
  46. https://www.dnr.state.mn.us/rsg/profile.html?action=elementDetail&selectedElement=NFFUN03030
  47. https://springerplus.springeropen.com/articles/10.1186/2193-1801-2-405
  48. https://www.researchgate.net/publication/377021212_The_Adaptations_of_High-Altitude_Mushrooms_in_the_Cold_Desert_of_Ladakh
  49. https://redlist.info/iucn/species_view/834994/
  50. https://www.journalssystem.com/amy/Updated-Distribution-of-Endangered-Psathyrella-ammophila-in-Poland-New-Localities%2C159748%2C0%2C2.html
  51. https://redlist.info/iucn/species_view/321150
  52. https://www.researchgate.net/publication/347954453_Diversity_of_genus_Psathyrella_Psathyrellaceae_Agaricales_from_Punjab_India
  53. https://www.first-nature.com/fungi/psathyrella-candolleana.php
  54. https://www.mushroomexpert.com/psathyrella_piluliformis.html
  55. https://www.researchgate.net/publication/271789206_Coprinus_Pers_and_the_Disposition_of_Coprinus_Species_sensu_lato
  56. https://mycokeys.pensoft.net/article/71405/
  57. https://www.mycosphere.org/pdf/Mycosphere_5_1_1.pdf
  58. https://mycoanatomical.com/common-ink-cap-coprinopsis-atramentaria/
  59. https://pubmed.ncbi.nlm.nih.gov/21370948/
  60. https://www.tandfonline.com/doi/full/10.3852/12-136
  61. https://www.mycolobs-journal.org/Volumi/MycolObs11p38-68.pdf
  62. https://www.tandfonline.com/doi/full/10.3852/11-149
  63. https://pmc.ncbi.nlm.nih.gov/articles/PMC6160792/
  64. https://www.mushroomexpert.com/coprinellus_micaceus.html
  65. https://www.herbarium.iastate.edu/files/fungi/Coprinellus%2520radians%2520%28Desm.%29Vilg.%2520Hopple%2520&%2520Johnson.pdf
  66. https://www.mushroomexpert.com/coprinellus_domesticus.html
  67. https://pmc.ncbi.nlm.nih.gov/articles/PMC11376300/
  68. https://doi.org/10.1080/00275514.2017.1386526
  69. https://doi.org/10.3390/f14071387
  70. https://imafungus.pensoft.net/article/143796/
  71. https://www.mykoweb.com/CAF/species/Parasola_conopilea.html
  72. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.691.3.1
  73. https://www.first-nature.com/fungi/lacrymaria-lacrymabunda.php
Add your contribution
Related Hubs
User Avatar
No comments yet.