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Sedum dasyphyllum
Sedum dasyphyllum
Sedum dasyphyllum
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Sedum dasyphyllum
A Sedum dasyphyllum with flowers at a rural house in Southern Italy
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Sedum
Species:
S. dasyphyllum
Binomial name
Sedum dasyphyllum
Synonyms

Sedum burnatii

Detail of stems

Sedum dasyphyllum,[1][2] also named Sedum burnatii and commonly known as Corsican stonecrop[3] or thick-leaved stonecrop,[4] is a low-growing succulent flowering plant of the genus Sedum in the family Crassulaceae.

Description

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It is a small perennial plant with green-turquoise or gray-green opposite leaves and a creeping stem forming shrubs.[5] Its flowers are white and small with little black dots on the petals and green ovaries. The Sedum dasyphyllum, typical of the Mediterranean region, usually grows among the rocks, especially among the tuff walls of rural areas.

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Subspecies and varieties

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  • Sedum dasyphyllum subsp. dasyphyllum[6]
  • Sedum dasyphyllum subsp. glanduliferum
  • Sedum dasyphyllum subsp. granatense
  • Sedum dasyphyllum var. microphyllum

References

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

Sedum dasyphyllum

View on Grokipedia
from Grokipedia
Sedum dasyphyllum is a low-growing, evergreen succulent perennial subshrub in the family Crassulaceae, forming dense mats or cushions up to 15 cm tall with creeping, highly branched stems and tiny, fleshy, bluish-green to silvery-grey leaves that measure 2–7 mm long and often develop pink or purple tinges under stress. First described by Carl Linnaeus in 1753, it is commonly known as Corsican stonecrop or thick-leaved stonecrop and produces clusters of small, star-shaped, creamy-white flowers on short stems during summer. Native to rocky habitats such as walls, dry grasslands, and colline to subalpine zones in central and southern Europe (including Austria, France, Italy, Spain, and Switzerland), southwest Turkey, and northwest Africa (Morocco, Algeria, and Tunisia), the species has been introduced to parts of northern Europe like Belgium, Denmark, Great Britain, and Ireland. Its leaves are opposite or in whorls of three, ovoid to egg-shaped, strongly keeled, and glandular-hairy in the upper parts, contributing to its adaptation to temperate, drought-prone environments. Valued ornamentally for ground cover and in green roofs due to its drought tolerance and cold hardiness to about -8°C, S. dasyphyllum also has ethnobotanical uses: its leaves and young stems are edible raw or cooked but may cause mild gastric upset from alkaloids like sedine and sedamine, while extracts exhibit anti-inflammatory, antiseptic, and antioxidant properties for treating wounds.

Taxonomy

Etymology and nomenclature

The genus name Sedum originates from the Latin verb sedeo, meaning "to sit," which refers to the sedentary, low-growing habit of many species in the genus that appear to sit or sprawl over rocks and surfaces. The specific epithet dasyphyllum is a Latinized form derived from the Greek words dasys (hairy or shaggy) and phyllon (leaf), describing the species' densely glandular-pubescent foliage. Sedum dasyphyllum was first formally described by Carl Linnaeus in his seminal work Species Plantarum in 1753, where it was established as a distinct species within the genus without subsequent major taxonomic revisions to the binomial name. Common names for the plant include Corsican stonecrop, reflecting its abundance in Corsica and surrounding Mediterranean regions, and thick-leaved stonecrop, which emphasizes the succulent, fleshy nature of its leaves. In older botanical literature, it was occasionally referred to under the synonym Sedum burnatii, named after the Swiss botanist Émile Burnat, though this has been relegated to synonymy in modern classifications.

Classification and synonyms

Sedum dasyphyllum belongs to the kingdom Plantae, phylum Tracheophyta, class Magnoliopsida, order , family , genus , and species S. dasyphyllum. The species has several accepted synonyms, including Sedum burnatii Briq., named after the Swiss botanist Émile Burnat, as well as Leucosedum dasyphyllum (L.) Fourr. and Oreosedum dasyphyllum (L.) Grulich; historical synonyms also encompass Sedum glaucum Lam. and Sedum corsicum Duby. Within the genus Sedum, S. dasyphyllum is placed in section Sedum of subgenus Sedum. Molecular phylogenetic studies have revealed that Sedum sensu lato is polyphyletic, prompting taxonomic revisions in Crassulaceae, with some species reclassified into genera such as Hylotelephium; however, S. dasyphyllum remains in Sedum in current classifications as of 2025.

Description

Morphology

Sedum dasyphyllum is a low-growing, mat-forming succulent that typically reaches heights of 5-15 cm when flowering and spreads up to 30 cm wide through creeping stems. This forms dense cushions, with stems that are prostrate to ascending, highly branched, and often bluish-green with tinges, particularly in the upper portions where glandular hairs are present. The stems are short and numerous, bearing or whorled leaves that are ovoid to subglobose, measuring 4-8 in length and 3-4 in width, with a fleshy, succulent texture adapted for . These leaves are blue-green to gray-green, often covered in dense, short glandular hairs, and feature a keeled underside for structural support, sessile attachment with a basal hump, and a tight spiral arrangement of 4-5 rows along the stems. Sterile shoots are densely leafy, while flowering stems are more loosely structured. Flowers are small and star-shaped, pedicellate, and pentamerous, with white to pink petals fused at the base, measuring approximately 5-7 mm in length and featuring dark red lines or dots. The sepals are obtuse and basally fused, surrounding green ovaries, with violet anthers; inflorescences form terminal cymes of 10-30 flowers, each cluster 1-3 cm across. Fruits consist of erect, brown follicles, 2-2.5 mm long, that split open to release tiny, ovoid, dull-brown seeds with a testa and acute apex. These structures facilitate seed production following of the flowers.

Reproduction

_Sedum dasyphyllum exhibits a mixed reproductive strategy, combining sexual reproduction through flowering and seed production with extensive vegetative propagation.flowers annually from late spring to summer, typically between May and July in its native Mediterranean range, producing small, star-shaped flowers with white to pink petals and violet anthers arranged in terminal cymes. The flowers are primarily insect-pollinated, attracting small bees such as species in the genera Halictus, Hoplitis, and (Apidae), as well as flies like Oscinella frit (Chloropidae) and Phthiria pulicaria (Bombyliidae), with recorded visitation rates indicating effective transfer despite low overall . Following and fertilization, the plant develops erect follicles containing numerous small, ovoid with ribbed testae; these dehiscent follicles release primarily via dispersal, facilitating spread across rocky habitats. In addition to sexual reproduction, S. dasyphyllum readily propagates vegetatively, with stem fragments and fallen leaves rooting easily upon contact with soil to form dense clonal mats that enhance local population persistence. As a perennial succulent subshrub with evergreen foliage, it lacks a distinct dormancy period, allowing continuous growth and where sexual reproduction contributes to genetic diversity amid predominant clonal expansion.

Distribution and habitat

Geographic range

Sedum dasyphyllum is native to the Mediterranean Basin, encompassing central and southern Europe including countries such as Austria, France, Germany, Greece, Italy, Spain, Switzerland, and the Balkans, as well as islands like Corsica, Sicily, and Sardinia. Its range extends eastward to southwestern Turkey (Anatolia) and southward to North Africa, specifically Morocco, Algeria, and Tunisia. The species has been introduced and naturalized outside its native range through ornamental trade, occurring in parts of , particularly the southern regions where it is occasionally found as a naturalized plant on walls and rocky sites. It is also naturalized in and temperate regions of , including scattered populations in and cultivated escapes near sites like the Buffalo Botanical Gardens in New York. Historical records indicate expansion beyond the native range since the 19th century, primarily due to human-mediated dispersal via the ornamental plant trade. Distribution patterns feature disjunct populations concentrated in rocky Mediterranean hotspots, forming dense mats in fragmented, elevated terrains across its core range.

Habitat preferences

Sedum dasyphyllum thrives in and sparsely vegetated microhabitats, particularly on dry and siliceous substrates such as outcrops, slopes, and volcanic walls. It prefers poor, well-drained soils that are oligotrophic and non-saline, with a range of 6 to 8, encompassing slightly acidic to alkaline conditions typical of lithosols in Mediterranean regions. The species is adapted to a characterized by hot, dry summers and mild winters, corresponding to USDA hardiness zones 5-9. It tolerates annual rainfall between 300 and 800 mm, exhibiting high due to its succulent nature, which allows it to endure extended periods of in nutrient-poor environments. Full sun exposure is essential, as the avoids shaded or waterlogged sites, aligning with its high requirements in coastal cliffs and inland rocky areas. Sedum dasyphyllum occurs from sea level to altitudes up to 2000 m, favoring open, exposed positions in its native Mediterranean range. Its adaptations include thick, fleshy leaves that store water and fine glandular hairs that help reduce transpiration in arid conditions, enabling survival in extreme solar radiation and dry habitats.

Ecology

Biological interactions

Sedum dasyphyllum is primarily pollinated by small insects, with bees serving as the main pollinators of its white, star-shaped flowers during the summer blooming period. In pollination networks within high mountain shrub communities, the species interacts with multiple insect visitors, showing a high dependence on pollinators for seed set, though limited self-pollination may occur in isolated conditions. The succulent leaves of S. dasyphyllum are subject to herbivory by various small invertebrates, including aphids, mealybugs, spider mites, scale insects, and thrips, which can damage foliage in cultivated settings, though no major pests dominate in natural habitats. Snails and slugs occasionally graze on the plant, particularly in moist microenvironments, but its tough, fleshy tissues limit extensive predation. Associations with mycorrhizal fungi in S. dasyphyllum are variable or absent, as the species is classified as non-mycorrhizal in phylogenetic surveys of , though soil fungal communities around cliff-dwelling individuals exhibit high diversity, including potential mycorrhizal types that may aid uptake in nutrient-poor rocky substrates. As a mat-forming groundcover in rocky Mediterranean habitats, S. dasyphyllum plays a key ecological role by stabilizing slopes and preventing through its dense root systems. It provides microhabitats for in scrubland ecosystems, enhancing local biodiversity by offering shelter and nectar resources during its flowering season.

Conservation status

Sedum dasyphyllum is not evaluated on the IUCN Red List of Threatened Species as of 2025. In the 1997 IUCN/SSC Cactus and Succulent Specialist Group action plan, the species is noted as present in Morocco due to its wide distribution across the Mediterranean region, spanning central and southern Europe to southwestern Turkey and northwest Africa, though it is noted as rare in Anatolia. Regional threats include habitat loss from urbanization, agricultural expansion, and overgrazing by livestock such as goats, particularly in Mediterranean rocky slopes and outcrops. Overcollection for the horticultural trade represents an additional pressure in locales like Morocco, where demand for ornamental succulents contributes to exploitation of wild populations. Fires and competition from invasive species, such as Opuntia ficus-indica, further endanger localized populations in these fragmented habitats. Population trends were considered stable as of 1997, bolstered by the species' extensive range and capacity for , which enables rapid colonization and recovery in suitable environments. Local declines are reported in areas subject to intense , but no widespread was evident at that time. The species receives no international protection under the Convention on International Trade in Endangered Species (). Regionally, it is absent from major red lists, including those in Spain, where subspecies like S. dasyphyllum subsp. granatense—schizoendemic to areas such as Sierra Nevada—are not formally categorized despite their restricted occurrence. Conservation efforts emphasize habitat preservation in protected areas and promotion of the species in ecological gardening to mitigate threats without specific legal safeguards.

Cultivation and uses

Horticultural requirements

Sedum dasyphyllum thrives in full sun, requiring at least six hours of direct sunlight daily to maintain compact growth and vibrant coloration, though it can tolerate partial shade in hotter climates. It is hardy in USDA zones 7 to 9, tolerating temperatures down to about 0°F (-18°C) with protection from severe winter winds, but performs best in mild winters above -8°C. This succulent prefers well-drained, gritty such as a mix of sand and or a commercial cactus/succulent potting medium to prevent waterlogging. Water sparingly, employing a soak-and-dry method where the is allowed to dry completely between waterings—typically every 1-2 weeks in summer and less frequently in winter—to avoid root rot. Ideal for rock gardens, retaining walls, or containers, Sedum dasyphyllum forms dense mats when planted 6-8 inches (15-20 cm) apart, with its shallow roots suiting shallow soils or vertical applications. Fertilize minimally in spring with a diluted, balanced succulent fertilizer applied every 4-6 weeks during the growing season to support healthy development without excess growth. Common issues include root rot from overwatering, manifesting as yellowing or mushy stems, and infestations of mealybugs or scale insects, which can be managed with neem oil applications. Prune dead or leggy stems annually in early spring to maintain tidiness and encourage fresh growth.

Propagation and applications

Sedum dasyphyllum can be propagated through several methods, with vegetative approaches being the most reliable due to the plant's succulent nature. Stem cuttings are a common and effective technique; healthy stems are cut to 2-4 inches in length, allowed to callus for a day or two, and then placed on moist, well-draining medium such as sand or a cactus mix, where they typically root within 2-4 weeks under bright, indirect light and temperatures around 70-75°F (21-24°C). Leaf propagation is also possible but slower; individual leaves are gently removed and laid on a similar moist substrate, rooting in approximately 4-6 weeks as new plantlets emerge from the base, though success rates may vary and require patience to avoid rot. Seed propagation involves surface-sowing fine seeds in spring on gritty, well-drained soil in a greenhouse or warm outdoor spot, covered lightly with sand, and kept at 70-75°F (21-24°C) in bright but indirect light; germination typically occurs in 2-4 weeks, after which seedlings are pricked out and grown on before transplanting in summer. Division of established clumps is straightforward at any time but ideally in spring or early summer, allowing quick establishment of larger pieces directly in the garden or pots. In practical applications, Sedum dasyphyllum serves primarily as an ornamental groundcover in and sustainable landscaping, where its low-growing, mat-forming habit helps reduce water use, suppress weeds, and control on slopes or rock gardens. It is particularly valued in extensive systems for its , to thrive in shallow (1-3 inch) media, and contributions to , retention, and urban , as demonstrated in regional trials. Commercially, it is widely available and sold through nurseries for rock gardens, borders, and container accents to promote low-maintenance, water-efficient designs. Traditional medicinal uses include applying crushed leaves and young stems to wounds for their purported anti-inflammatory, antimicrobial, and wound-healing properties, attributed to compounds like caffeic acid and flavonoids, though these applications lack robust scientific verification and are not recommended without professional guidance. Propagation challenges include slower establishment from seeds compared to cuttings, necessitating sterile conditions and vigilant monitoring to prevent damping off, a fungal disease common in moist seedling environments.

Varieties and subspecies

Subspecies

Sedum dasyphyllum is recognized as comprising three subspecies in some taxonomic treatments (e.g., Euro+Med Plantbase), differentiated mainly by geographic distribution, pubescence, and minor morphological variations, while maintaining the species' characteristic succulent habit with small, fleshy leaves and white star-shaped flowers. However, major databases like POWO treat subsp. glanduliferum as a synonym of subsp. dasyphyllum. The nominal subspecies, Sedum dasyphyllum subsp. dasyphyllum, occurs widely across central and southern Europe, southwestern Turkey, and northwest Africa, including countries such as Albania, Algeria, Austria, France, Greece, Italy, Morocco, and Tunisia. It features the typical glandular-hairy leaves and stems of the species, forming compact mats in rocky habitats. Sedum dasyphyllum subsp. glanduliferum is distributed in the western Mediterranean, notably in and , with recent extending to northwestern . This subspecies is distinguished by abundant glandular hairs on stems and leaves, imparting a fuzzier texture. Sedum dasyphyllum subsp. granatense is endemic to southern , particularly the . As a succulent adapted to temperate conditions in higher altitudes, it shares morphology of the but is geographically restricted.

Varieties and cultivars

The 'Minor' cultivar (sometimes informally referred to as var. minor) is a dwarf selection growing to only 5 cm tall, with smaller leaves measuring 2-3 mm and more compact growth habits compared to the typical species form, originating from regions in the Mediterranean; it is characterized by opposite blue-green leaves that shift to purplish hues under stress conditions like drought or cold. Among cultivars, 'Major' represents a larger variant with robust stems and chunkier, powdery blue-green leaves often tinged with lavender, forming dense mats up to 30 cm wide and prized in horticulture for trough gardens and succulent planters. Other notable selections include 'Lilac Mound', selected for its colorful foliage that transitions from blue-green to pinkish-purple in full sun or cooler weather, enhancing ornamental appeal. These varieties and cultivars have been developed for the ornamental trade, emphasizing denser mat formation and varied foliage colors to suit rock gardens, green roofs, and container plantings. In contrast to wild populations, cultivated forms often display improved and vigor for faster ground coverage, along with reliable hardiness to USDA zones 6-9. Propagation of these selections is straightforward via stem cuttings or division, facilitating their use in horticultural settings.

References

  1. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:275301-1
  2. https://www.worldfloraonline.org/taxon/wfo-0000437029
  3. https://www.rhs.org.uk/plants/16936/sedum-dasyphyllum/details
  4. https://temperate.theferns.info/plant/Sedum+dasyphyllum
  5. http://floranorthamerica.org/Sedum
  6. https://worldofsucculents.com/sedum-dasyphyllum/
  7. https://llifle.com/Encyclopedia/SUCCULENTS/Family/Crassulaceae/27198/Sedum_dasyphyllum
  8. https://www.gbif.org/species/7172720
  9. https://www.inaturalist.org/taxa/208966-Sedum-dasyphyllum
  10. https://onlinelibrary.wiley.com/doi/full/10.1002/tax.12316
  11. https://www.researchgate.net/publication/393232092_Sedum_dasyphyllum_subsp_glanduliferum_a_new_addition_for_the_flora_of_northwestern_Spain
  12. https://www.picturethisai.com/wiki/Sedum_dasyphyllum.html
  13. https://buleria.unileon.es/bitstream/handle/10612/25775/Sedum_Dasyphyllum_Subsp_Glanduliferum_New_Addition_Flora.pdf?sequence=5&isAllowed=y
  14. https://rngr.net/npn/propagation/protocols/crassulaceae-sedum-63
  15. https://www.naturespot.org/species/thick-leaved-stonecrop
  16. https://www.sciencedirect.com/science/article/pii/S1125471824006431
  17. https://floraveg.eu/en/factsheet/default/131034
  18. https://www.gardenia.net/plant/sedum-dasyphyllum
  19. https://greg.app/pollinate-corsican-stonecrop/
  20. https://greg.app/bugs-on-sedum-dasyphyllum-minor/
  21. https://thenextgardener.com/blogs/news/how-to-get-rid-of-snails-slugs-on-succulents
  22. https://www.bloomindesigns.com/sedum-groundcover/
  23. https://portals.iucn.org/library/efiles/documents/1997-041.pdf
  24. https://www.researchgate.net/publication/360794557_Endemic_Crassulaceae_in_the_Euro-Mediterranean_biogeographical_region_needing_protection_A_preliminary_checklist_for_conservation_purposes
  25. https://www.succulentsandsunshine.com/types-of-succulents/sedum-dasyphyllum-corsican-stonecrop/
  26. https://worldofsucculents.com/sedum-dasyphyllum-minor/
  27. https://mountaincrestgardens.com/sedum-dasyphyllum-corsican-stonecrop/
  28. https://succulentsbox.com/blogs/blog/how-to-care-for-sedum-minor
  29. https://www.almanac.com/plant/sedum
  30. https://travaldo.blogspot.com/2021/08/sedum-dasyphyllum-thick-leaved.html
  31. https://www.canr.msu.edu/resources/selecting_plants_for_extensive_green_roofs_in_the_united_states_e3047
  32. https://servescape.com/products/sedum-dasy-major
  33. https://www.succulentsdepot.com/products/sedum-dasyphyllum-minor
  34. http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameCache=Sedum%20dasyphyllum
  35. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77316282-1
  36. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77224999-1
  37. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:986879-1
  38. https://plantlust.com/plants/43921/sedum-dasyphyllum-var-minor/
  39. https://www.avantgardensne.com/product/sedum-dasyphyllum-major/
  40. https://serreslavoie.com/en/products/sedum-dasyphyllum-major
  41. https://worldofsucculents.com/sedum-dasyphyllum-major-corsican-stonecrop/
  42. https://www.bloomindesigns.com/sedum-dasyphyllum-major-10-ct-flat/
  43. https://www.anniesannuals.com/sedum-dasyphyllum-major.html
  44. https://littleprinceplants.com/our-plants/plant-solutions/water-misers/sedum-dasyphyllum-major/
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