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Ramaria botrytis
Ramaria botrytis
Ramaria botrytis
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Ramaria botrytis
Scientific classification Edit this classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Gomphales
Family: Gomphaceae
Genus: Ramaria
Species:
R. botrytis
Binomial name
Ramaria botrytis
(Pers.) Ricken (1918)
Synonyms[1]
  • Clavaria botrytis Pers. (1797)
  • Corallium botrytis (Pers.) G.Hahn (1883)
  • Clavaria botrytis var. alba A.Pearson (1946)
Ramaria botrytis
Mycological characteristics
Smooth hymenium
No distinct cap
Stipe is bare
Spore print is yellow
Ecology is mycorrhizal
Edibility is edible but not recommended

Ramaria botrytis, commonly known as the clustered coral, the pink-tipped coral mushroom, or the cauliflower coral, is a species of coral fungus in the family Gomphaceae. The type species of the genus Ramaria, R. botrytis was first described scientifically in 1797 by mycologist Christiaan Hendrik Persoon.

The robust fruit body can grow up to 15 cm (6 in) in diameter and 20 cm (8 in) tall, and resembles some marine coral. Its dense branches, which originate from a stout, massive base, are swollen at the tips and divided into several small branchlets. The branches are initially whitish but age to buff or tan, with tips that are pink to reddish. The flesh is thick and white. The spores, yellowish in deposit, are ellipsoid, feature longitudinal striations, and measure about 13.8 by 4.7 micrometers. It resembles several species of coral fungi, some of which require microscopy to reliably identify.

A widely distributed species, it is found in North America, Australia, North Africa, central and eastern Europe, and Asia. The fungus is mycorrhizal with broadleaf trees, and fruits on the ground in wooded areas. The fruit bodies are edible and young specimens have a mild, fruity taste. Some authors warn of laxative effects in susceptible individuals. The fungus contains several chemical compounds with in vitro biological activity, and fruit bodies have antimicrobial activity against several species and strains of drug-resistant bacteria that cause disease in humans.

Taxonomy

[edit]

The species was first named as Clavaria botrytis in 1797 by Christian Hendrik Persoon.[2] In 1821, Elias Magnus Fries sanctioned the genus name Clavaria, and treated Ramaria as a section of Clavaria.[3] It was given its current name in 1918 by Adalbert Ricken.[4] Obsolete historical synonyms include Gotthold Hahn's 1883 Corallium botrytis[5] and Arthur Anselm Pearson's variety Clavaria botrytis var. alba,[6] which is no longer recognized as an independent taxon.[1] Currie Marr and Daniel Stuntz described the variety R. botrytis var. aurantiiramosa in their 1973 monograph of western Washington Ramaria;[7] Edwin Schild and G. Ricci described variety compactospora from Italy in 1998.[8] In 1950, E. J. H. Corner published George F. Atkinson's 1908 Clavaria holorubella as R. botrytis var. holorubella,[9] but this taxon is now known as the independent species Ramaria holorubella.[10]

The specific epithet botrytis is derived from the Greek word βότρυς (botrus) meaning "bunch of grapes".[11] The species is commonly known as the "cauliflower coral",[12] the "pink-tipped coral mushroom",[13] or the "rosso coral".[14] In the Cofre de Perote region of Veracruz, Mexico, R. botrytis is known by the local names escobea, meaning "broom", or pechuga, meaning "breast meat of chicken".[15]

Ramaria botrytis was designated the type species of Ramaria in 1933 by Marinus Anton Donk.[16] Modern molecular analysis indicates that Ramaria is a polyphyletic assemblage of species with clavarioid fruit bodies.[17][18] According to the infrageneric classification scheme proposed by Marr and Stuntz, R. botrytis is included in the subgenus Ramaria, which includes species that have grooved spores, clamps present in the hyphae, and fruit bodies with a large, profusely branched cauliflower-like appearance.[7] Phylogenetic analysis of nuclear large subunit ribosomal DNA suggests that R. botrytis is closely related to R. rubripermanens and R. rubrievanescens, and that these species form a clade that is sister (sharing a recent common ancestor) to the false truffle genus Gautieria, the most derived group within the studied taxa.[17]

Description

[edit]

The fruit bodies produced by the fungus are 6 to 20 cm (2+1⁄2 to 8 in) tall and 4 to 30 cm (1+1⁄2 to 12 in) wide.[9][19][20] They are fleshy cauliflower-like masses with a stout central stem that splits into a few lower primary branches before branching densely above. The stem is short and thick—about 2–6 cm (3⁄4–2+1⁄4 in) long[20] and 1.5–6 cm (1⁄2–2+1⁄4 in) in diameter—and tapers downward. Initially white, in age both the stem and branches turn pale yellow to buff to tan.[13] Old fruit bodies can fade to become almost white,[21] or may be ochre due to fallen spores.[14] The branching pattern is irregular, with the primary branches few and thick—typically 2–3 cm (3⁄4–1+1⁄4 in)—and the final branches slender (2–3 mm),[13] and usually terminated with five to seven branchlets.[7] The branchlet tips are pink to purplish-red. The flesh is solid and white,[13] and has an odor described variously as indistinct[22] or pleasant.[23] A drop of Melzer's reagent applied to the stem tissue reveals a weak amyloid staining reaction that often requires more than 30 minutes to develop. This reaction can be used to help distinguish R. botrytis from other similar fungi.[7]

Spores are produced by basidia on the outer surface of the branches. Viewed in deposit, the spores are pale yellow. Microscopically, they have fine longitudinal or oblique striations that often fuse together in a vein-like network. They range in shape from roughly cylindrical to sigmoid (curved like the letter "S"), and their dimensions are 12–16 by 4–5 μm.[24][25] Basidia are four-spored (occasionally two-spored), and measure 59–82 by 8–11 μm. The sterigmata (slender projections of the basidia that attach to the spores) are 4–8 μm long. The hymenium and subhymenium (the tissue layer immediately under the hymenium) combined are about 80 μm thick. Hyphae comprising the subhymenium are interwoven, 2.5–4.5 μm in diameter, thin-walled, and clamped.[7]

The variety R. botrytis var. aurantiiramosa is distinguished from the more common variety by the orange color of the upper branches.[26] Variety compactospora tends to show a more pronounced wine-red, purple, or reddish color in the branch tips, and has smaller spores measuring 9.2–12.8 by 4–5.4 μm.[8]

  • The branches are whitish to buff with reddish tips.
    The branches are whitish to buff with reddish tips.
  • The cylindrical to S-shaped spores bear characteristic longitudinal striations.
    The cylindrical to S-shaped spores bear characteristic longitudinal striations.

Similar species

[edit]

Distinctive features of Ramaria botrytis include its large size, the orange, reddish, or purplish branchlets, striate spores with dimensions averaging 13.8 by 4.7 μm, and a weak amyloid staining reaction of the stem tissue.[7] R. rubripermanens has reddish terminal branches, a stout form, and striate spores, but may be distinguished from R. botrytis by its much shorter spores.[7] Other species with which R. botrytis may be confused include: R. formosa, which has branches that are pinker than R. botrytis, and yellow-tipped; R. caulifloriformis, found in the Great Lakes region of the United States, whose branch tips darken with age; R. strasseri, which has yellow to brown branch tips; R. rubrievanescens, which has branches in which the pink color fades after picking or in mature fruit bodies; and R. botrytoides, which is most reliably distinguished from R. botrytis by its smooth spores.[12] The European species R. rielii, often confused with R. botrytis and sometimes considered synonymous, can be distinguished by microscopic characteristics: R. reilii lacks the clamped hyphae of R. botrytis, its spores are longer and wider, and they have warts instead of striations.[27] The North American species R. araiospora, though superficially similar to R. botrytis, has several distinguishing characteristics: it grows under hemlock; it has reddish to magenta branches with orange to yellowish tips; it lacks any discernible odor; it has warted, somewhat cylindrical spores averaging 9.9 by 3.7 μm; and it has non-amyloid stem tissue.[28] Uniformly colored bright pink to reddish, R. subbotrytis has spores measuring 7–9 by 3–3.5 μm.[29]

Lookalike Ramaria
R. araiospora R. formosa R. subbotrytis

Habitat and distribution

[edit]

An ectomycorrhizal species, R. botrytis forms mutualistic associations with broadleaf trees, particularly beech. In a study to determine the effectiveness of several edible ectomycorrhizal fungi in promoting growth and nutrient accumulation of large-fruited red mahogany (Eucalyptus pellita), R. botrytis was the best at improving root colonization and macronutrient uptake.[30] Records of associations with conifers[20] probably represent similar species.[14] Fruit bodies grow on the ground singly, scattered, or in small groups among leaves in woods.[24] They can also grow in fairy rings.[31] Ramaria botrytis is a "snowbank fungus", meaning it commonly fruits near the edges of melting snowbanks in the spring.[13] In Korea, it is prevalent at sites that also produce the choice edible species Tricholoma matsutake.[32]

Ramaria botrytis is found in Africa (Tunisia),[33] Australia,[34] Chile, Asia (including the eastern Himalayas of India,[35] Nepal,[36] Japan,[37] Korea,[32] Pakistan,[38] China,[36] the Far East of Russia,[39] and Turkey)[40] and Europe (including the Netherlands,[41] France,[42] Portugal,[43] Italy,[44] Bulgaria,[36] and Spain).[45] It is widely distributed in North America[12] (October–January on the West Coast and July–September elsewhere),[20] where it is most common in the southeast and along the Pacific Coast[31] but also appears in Mexico and Guatemala.[36] The variety R. botrytis var. aurantiiramosa, limited in distribution to Lewis County, Washington, associates with Douglas-fir (Pseudotsuga menziesii) and western hemlock (Tsuga heterophylla).[26] Variety compactospora is known from Sardinia, Italy, where it has been found growing in sandy soil in forests comprising strawberry tree (Arbutus unedo), tree heath (Erica arborea), and holm oak (Quercus ilex).[8]

Uses

[edit]

Ramaria botrytis is an edible species, and some rate it as choice.[13][46] Its taste is "slight", or "fruity",[22] and has been likened to sauerkraut, green peanuts (fresh harvested peanuts that have not been dehydrated), or pea pods.[21] Older fruit bodies develop an acidic flavor.[31] It is sold in food markets in Japan as Nedzumi-take,[37] and harvested from the wild in Korea and Nepal.[47] The thick base and main branches require longer cooking than the smaller branchlets.[31] In the Garfagnana region of central Italy, the mushroom is stewed, or pickled in oil.[44][48] Fruit bodies can be preserved by slicing thinly and drying.[49] One field guide rates the edibility as "questionable", warning of the possible danger of confusing specimens with the poisonous Ramaria formosa.[12] Other authors warn that some individuals may experience laxative effects from consuming the mushroom.[13][50] Caution is advised when collecting fruit bodies near polluted areas, as the species is known to bioaccumulate toxic arsenic.[51]

Chemical analysis shows R. botrytis to have a food energy value of 154 kilojoules per 100 grams of fresh fruit bodies,[52] which is comparable to the 120–150 kJ range reported for commercially grown edible mushrooms. As a percentage of dry matter, the fruit bodies contain 39.0% crude protein, 1.4% lipids, 50.8% carbohydrates, and 8.8% ash. The majority of the lipid content comprises oleic (43.9%), linoleic (38.3%), and palmitic (9.9%) fatty acids.[53]

Chemistry

[edit]
Nicotianamine

Extracts of the fruit body of Ramaria botrytis have been shown to favorably influence the growth and development of HeLa cells grown in tissue culture.[54] The mushroom contains nicotianamine, an ACE inhibitor (angiotensin-converting enzyme).[55] Nicotianamine is a metal-chelating compound essential in iron metabolism and utilization in plants.[56] Several sterols have been isolated from the fruit bodies, 5α,6α-epoxy-3β-hydroxy-(22E)-ergosta-8(14),22-dien-7-one, ergosterol peroxide, cerevisterol, and 9α-hydroxycerevisterol, in addition to the previously unknown ceramide (2S,2'R,3R,4E,8E)-N-2'-hydroxyoctadecanoyl-2-amino-9-methyl-4,8-heptade-cadiene-1,3-diol.[37]

Laboratory tests show that fruit bodies have antimicrobial activity against several strains of drug-resistant bacteria that are pathogenic in humans. Extracts inhibit the growth of the gram-positive bacteria Enterococcus faecalis and Listeria monocytogenes, and kill the gram-positive species Pasteurella multocida, Streptococcus agalactiae and S. pyogenes.[57]

In a 2009 study of 16 Portuguese edible wild mushroom species, R. botrytis was shown to have the highest concentration of phenolic acids (356.7 mg per kg of fresh fruit body), made up largely of protocatechuic acid; it also had the highest antioxidant capacity. Phenolic compounds—common in fruits and vegetables—are being scientifically investigated for their potential health benefits associated with reduced risk of chronic and degenerative diseases.[43]

References

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

Ramaria botrytis

View on Grokipedia
from Grokipedia
Ramaria botrytis, commonly known as the clustered coral, pink-tipped coral mushroom, or cauliflower coral, is a species of coral fungus in the family Gomphaceae, notable for its distinctive, branched fruiting body that resembles a cauliflower, with densely packed, short branches terminating in pinkish to reddish tips and a pale white to yellowish base. Typically measuring 8–20 cm in height and up to 25 cm across, it features white, firm flesh, a mild or fruity odor and taste, and produces a pale yellowish spore print from elongate-elliptical spores measuring 11–20 × 4–6 µm. Classified within the kingdom Fungi, phylum , class , order Gomphales, and Ramaria, the was originally described as Clavaria botrytis by Christian Hendrik Persoon in 1797 and later transferred to Ramaria by Adalbert Ricken in 1918. It forms ectomycorrhizal associations primarily with hardwood trees such as (Fagus sylvatica) and oaks, though it can also associate with , occurring solitary, scattered, or in groups on forest floors rich in leaf litter and decayed wood. Ramaria botrytis has a broad distribution across temperate regions, including much of Europe (where it is more common in southern and Mediterranean areas), North America (particularly under hardwoods and conifers in the east and west), and parts of Asia. Fruiting primarily in late summer to fall—and extending into winter in milder climates—it thrives in well-drained, loamy soils within mixed woodlands. The is considered and choice by many foragers, with young specimens offering a pleasant, apricot-like flavor when cooked, though it may cause mild effects in sensitive individuals and is not recommended for raw consumption. Due to its rarity in some regions, such as Britain where it is listed as Near Threatened, collection is discouraged to protect populations. Identification often requires microscopic confirmation of its striate spores and basidia, as similar like Ramaria rubella differ in color or preferences.

Taxonomy

Etymology

The genus name Ramaria derives from the Latin word ramus, meaning "branch," a reference to the extensively branched structure of the fruiting bodies in this group of fungi. The specific epithet botrytis originates from botrys, meaning "cluster of grapes," alluding to the dense, grape-like clustering of the branches in the fruiting body. Common names for Ramaria botrytis include clustered coral, reflecting the tight grouping of its branches; pink-tipped coral mushroom, due to the characteristic rose-pink coloration at the branch tips; and cauliflower coral, evoking the resemblance of its compact, whitish head to a head of . In mycology, naming conventions for coral fungi have historically emphasized morphological analogies to marine corals or structures, drawing from Latin and Greek roots to describe branching forms since the , as seen in early taxonomic works by mycologists like Christiaan Hendrik Persoon.

Classification

Ramaria botrytis is classified within the kingdom Fungi, phylum , class , order Gomphales, family Gomphaceae, and genus Ramaria. The species was originally described as Clavaria botrytis by Christian Hendrik Persoon in 1797. It was transferred to the genus Ramaria by Hubert Bourdot in 1894, and designated the of Ramaria by Marinus Anton Donk in 1933. Molecular analyses place R. botrytis in subgenus Ramaria, characterized by species with striate spores and ectomycorrhizal associations. Phylogenetic studies using nuclear large subunit ribosomal DNA indicate close relationships to R. rubripermanens and R. rubrievanescens. The genus Ramaria is polyphyletic, with clavarioid fruit bodies arising multiple times within the Gomphales. Post-2020 molecular studies, including ITS and LSU sequencing, confirm R. botrytis within an ectomycorrhizal clade in subgenus Ramaria, revealing cryptic lineages and associations with hosts like Nothofagus in Patagonia, while grouping near Gautieria due to shared spore morphology.

Synonyms and varieties

The basionym of Ramaria botrytis is Clavaria botrytis Pers., published in 1797. Key synonyms include Merisma botrytis (Pers.) Spreng. (1827), Corallium botrytis (Pers.) G. Hahn (1883), and Clavaria plebeja Wulfen (1781). Clavaria botrytis var. alba A. Pearson (1946) is another synonym, referring to a paler form no longer recognized as distinct. Recognized varieties include R. botrytis var. aurantiiramosa Marr & D.E. Stuntz (1974), distinguished by orange-tipped branches, a massive stipe, and weak amyloid reactions in spores; it is primarily restricted to the of , though recent nomenclatural updates in 2018 elevated it to full species status as Ramaria aurantiiramosa (Franchi & M. Marchetti). Another variety, R. botrytis var. compactospora Schild & G. Ricci (1998), features smaller spores (7–9 × 3–4.5 μm compared to the typical 11–18 × 4–6 μm) and is known from collections in . According to databases like Species Fungorum, the current name Ramaria botrytis (Pers.) Bourdot (1894) remains valid with no major rejections or validations post-2020, though ongoing molecular studies continue to refine infraspecific taxa within the Ramaria subgenus.

Description

Macroscopic characteristics

Ramaria botrytis produces a coralloid fruiting body that is club-like or coral-shaped, typically measuring 7-22 cm in height and 6-30 cm in width, arising from a stout, fleshy base that can reach 2-6 cm thick and often roots into the substrate. The base is whitish to creamy-white, sometimes developing yellowish or brownish tones with age, and is compact without bruising upon handling. The branching pattern is dense and clustered, resembling a or bunch of grapes, with thick primary branches up to 2-3 cm wide that divide irregularly into shorter, more slender terminal branches terminating in 5-7 small branchlets. Branches are initially to pale yellow, with tips that are to vinaceous-red or purplish when young, fading to buff, tan, or pallid tones as the fruiting body matures. The surface of the branches is smooth to slightly wrinkled or rugose, dry, and moderately brittle, with the base often partially buried in and associated with . The fruiting body emits a mild, pleasant , sometimes described as fruity, and has a mild to nutty . The throughout is thick, , and firm. To obtain a , the fruiting body is placed with branches downward on white paper or glass overnight, yielding a pale ochraceous to ochraceous-buff or yellowish deposit. In developmental stages, young specimens are compact and cauliflower-like with vivid pinkish-red tips on a white base, while mature individuals spread out with elongating branches, discolored tips, and an overall ocheraceous hue.

Microscopic characteristics

The spores of Ramaria botrytis are to subcylindrical, measuring 11–20 × 4–6 μm, with a length mean of 13.8 μm, and feature fine longitudinal to spiraled striations visible under light . These striations consist of raised ridges, as confirmed by scanning studies showing patterns of longitudinally oriented ornamentation typical of the . The spores exhibit inamyloid to weakly reactions, with any coloration in Melzer's reagent developing slowly over more than 30 minutes. The hyphal system is monomitic, composed primarily of generative hyphae that are thin-walled, 3–8 μm wide, and clamped at some , though not all bear clamp connections. Basidia are club-shaped (clavate), measuring 40–60 × 6–8 μm, and typically bear four sterigmata, with clamps at their bases. They lack cyanophilous granules in their contents when stained with cotton blue. Diagnostic microscopic reactions include a negative response to fruiting surface water (FSW) mounts and a weak amyloid response in stipe context tissues to Melzer's reagent, aiding differentiation from closely related species with stronger reactions.

Similar species

Ramaria botrytis can be confused with several other coral fungi due to overlapping macroscopic features, particularly in the genus Ramaria, but key differences in branch coloration, spore morphology, and microscopic structures aid in accurate identification. One close look-alike is , which exhibits pinker branches throughout its fruiting body and tends to be more slender overall, though it shares similar mycorrhizal habitats under hardwoods. In contrast, R. botrytis has pale branches with pinkish tips that fade with age, and a more robust, clustered form. Ramaria rubripermanens is another similar species in the R. botrytis group, distinguished by shorter spores measuring 9-12 × 4-5 μm and persistent red tips on branches that do not fade as readily as in R. botrytis. Molecular analyses further separate R. rubripermanens from R. botrytis, confirming their distinct phylogenetic positions within subgenus . Unlike R. botrytis, which features clamp connections on hyphae, Ramaria rielii lacks clamp connections entirely and has a different hyphal structure, making it microscopically distinct despite superficial similarities in branching. This is often misidentified as R. botrytis but requires examination of hyphal septa for confirmation. Ramaria stricta, a poisonous species with an acrid taste, differs in its yellow branches and stricter, upright growth habit, and it has a narrower distribution primarily in western . Its branches lack the pinkish apices of R. botrytis and are more rigidly parallel. Other potential look-alikes outside the include Clavaria fragilis, a slender and fragile club with simple, unbranched or minimally branched structure and no pink tips, often growing in grassy areas rather than under trees. Similarly, (crown-tipped coral) features delicate, wispy branches with pyramidal tips and grows on decaying wood, contrasting the fleshy, tree-associated of R. botrytis. For reliable identification, focus on macroscopic traits like branch density and coloration alongside microscopic features; the spores of R. botrytis are diagnostic with their elongated ellipsoidal to subfusiform shape, measuring 11–20 × 4–6 μm, and bearing slightly twisted longitudinal shallow striations that are inamyloid. Clamp connections are present in R. botrytis hyphae, unlike in some confusable species. Recent studies utilizing , particularly of the ITS region, have updated distinctions among cryptic Ramaria species post-2020, revealing significant molecular variation in R. botrytis that suggests a and enabling better separation from close relatives like R. rubripermanens. These phylogenetic approaches, combined with traditional morphology, are essential for resolving ambiguous field identifications.

Ecology and distribution

Habitat and associations

Ramaria botrytis is primarily an ectomycorrhizal fungus, forming mutualistic associations with the roots of various trees, where it envelops fine root tips in a fungal sheath to facilitate and exchange. It commonly associates with broadleaf trees such as (Fagus sylvatica) and (Quercus spp.), developing ectomycorrhizae that enhance host tree uptake, particularly and . Associations with , including (Pinus densiflora), have also been documented in mixed forests, indicating a versatile symbiotic partner across woodland types. Recent studies confirm its predominantly ectomycorrhizal lifestyle. This species prefers terrestrial substrates in undisturbed or mixed woodlands, often emerging from rich in near old stumps, fallen branches, or along paths where root systems are abundant. Its spreads extensively in the layer, aiding in aggregation and retention, while bodies typically arise solitarily, scattered, or in small groups and occasionally in fairy rings. In certain montane regions, R. botrytis acts as a snowbank species, fruiting shortly after when cooler, moist conditions prevail. Fruiting occurs mainly from summer through fall in temperate zones, with extensions into winter or early spring in milder climates where temperatures remain above freezing. Ecologically, R. botrytis plays a key role in nutrient cycling by mobilizing nutrients through its extraradical , which decomposes organic litter and transports elements back to host trees, thereby supporting productivity and .

Geographical distribution

Ramaria botrytis is native to the , where it occurs widely across , , and parts of . In , it is distributed throughout much of the mainland, including central and eastern regions, though it is rarer in Britain and , particularly in southern woodlands. In , the species is found in both eastern and western areas, with notable abundance in the and southeastern . In , it inhabits eastern mountainous regions, such as the , , and . The fungus has been introduced or naturalized outside its native range, including in , such as , and , including and in . Regional variations include the variety R. botrytis var. aurantiiramosa common in the of , and R. botrytis var. compactospora, described from . Globally, Ramaria botrytis is not considered threatened and holds a secure conservation status (G5) according to NatureServe, with no specific IUCN listing. However, it can be locally rare in some European areas due to habitat loss from woodland management. In the , it was assessed as Near Threatened in the 2006 Red Data List, and it is monitored as part of broader fungal conservation efforts in .

Uses and properties

Culinary uses

Ramaria botrytis is regarded as a choice , widely consumed in various regions including parts of and , with a mild flavor, fruit scent, and taste similar to . It has no reported toxicity when properly identified and prepared, though specimens infested with maggots or showing discoloration should be avoided to prevent potential gastrointestinal discomfort. Nutritionally, the mushroom is low in calories and fat, with moderate protein content, rich in B vitamins, including riboflavin and niacin, as well as tocopherols and ascorbic acid, contributing to its value in low-calorie diets. Preparation requires thorough cooking to soften the tough texture, typically by boiling for 10-15 minutes or sautéing in butter or oil; raw consumption is not recommended. It is commonly used in cooked dishes. Cautions include the potential for from contaminated soils, with concentrations up to 10 mg/kg reported in some samples, necessitating collection from clean habitats. Careful identification is essential to distinguish it from toxic look-alikes such as .

Medicinal and chemical properties

Ramaria botrytis contains nicotianamine, a non-protein amino acid that functions as an () inhibitor, potentially aiding in management by chelating metals and modulating iron metabolism. This compound was identified in early 2000s studies screening extracts for ACE inhibitory activity, where R. botrytis emerged as one of few producing it at detectable levels. The fungus is rich in other bioactive compounds, including sterols such as , phenolic acids (e.g., protocatechuic acid) with effects, unsaturated fatty acids like , tocopherols (α- and β-forms), and ascorbic acid. Post-2020 analyses, including a 2021 review of fungi, highlighted these components' contributions to nutritional and pharmacological potential, with phenolic content reaching 56.35 mg/g dry weight and tocopherols up to 1.71 μg/g. Extracts from fruit bodies demonstrate antimicrobial activity, primarily against , including drug-resistant strains like , , methicillin-resistant Staphylococcus aureus (MRSA), and certain streptococci. Aqueous methanolic extracts showed bactericidal effects against and at minimum bactericidal concentrations of 20 mg/mL, with inhibition zones up to 11.1 mm against . Ethyl acetate extracts were particularly effective against oral pathogens, supporting potential applications in preventing bacterial infections. Recent studies (post-2020) confirm activity against multi-drug resistant bacteria via bioactive metabolites. Antioxidant properties are prominent, driven by polysaccharides and phenolics; water-extracted exhibited radical scavenging up to 82.67% at 1.4 mg/mL and strong hydroxyl radical inhibition (90% at 1.2 mg/mL). The ABTS assay yielded an EC50 of 0.39 mg/mL, indicating robust free radical scavenging comparable to other coral fungi. These activities, along with potential anti-inflammatory and hepatoprotective effects observed in mouse models, stem from immunostimulatory glucans and radical stabilization by terpenoids and , though human clinical trials remain absent. Caution is advised due to bioaccumulation of arsenic, with concentrations up to 10 mg/kg dry weight reported in fruit bodies, primarily in organic forms that may pose risks in contaminated habitats.

References

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  2. https://www.mushroomexpert.com/ramaria_botrytis.html
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  4. https://uwlabyrinth.uwaterloo.ca/labyrinth_archives/whats_in_a_name.pdf
  5. https://www.inaturalist.org/taxa/48800-Ramaria-botrytis
  6. https://www.first-nature.com/fungi/~naming.php
  7. https://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=356843
  8. https://doi.org/10.1007/s11557-023-01905-5
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  10. https://www.indexfungorum.org/Names/namesrecord.asp?RecordID=348766
  11. https://www.researchgate.net/profile/Lorelei_Norvell/publication/255719422_Ramaria_of_the_Pacific_Northwest/links/57ccbccf08ae59825185dd13/Ramaria-of-the-Pacific-Northwest.pdf
  12. http://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=554469
  13. https://www.speciesfungorum.org/names/GSDspecies.asp?RecordID=483726
  14. https://www.ijirset.com/upload/2016/march/267_SYSTEMATIC.pdf
  15. https://www.texasmushrooms.org/en/ramaria_botrytis.htm
  16. https://upload.wikimedia.org/wikipedia/commons/c/c7/Ramaria_of_the_Pacific_Northwestern_United_States_%28IA_ramariaofpacific00exet%29.pdf
  17. https://repository.naturalis.nl/pub/531845
  18. https://www.ias.ac.in/article/fulltext/plnt/095/01/0051-0064
  19. https://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Ramaria%20botrytis
  20. https://research.fs.usda.gov/treesearch/download/2966.pdf
  21. https://www.mushroom-appreciation.com/cauliflower-coral-mushroom.html
  22. https://mushroomhobby.com/legacy/Gallery/Ramaria/index.htm
  23. https://pmc.ncbi.nlm.nih.gov/articles/PMC7437900/
  24. https://www.researchgate.net/publication/259331838_Notes_on_Gomphales_Ramaria_rielii
  25. https://zombiemyco.com/pages/strict-branch-coral-fungus-ramaria-stricta
  26. https://pmc.ncbi.nlm.nih.gov/articles/PMC5396197/
  27. https://practicalselfreliance.com/coral-mushrooms/
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