dcsimg

Associations

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In Great Britain and/or Ireland:
Foodplant / mycorrhiza / ectomycorrhiza
fruitbody of Cortinarius purpurascens is ectomycorrhizal with live root of Fagus
Remarks: Other: uncertain
Other: major host/prey

Foodplant / mycorrhiza / ectomycorrhiza
fruitbody of Cortinarius purpurascens is ectomycorrhizal with live root of Quercus
Remarks: Other: uncertain

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Comprehensive Description

provided by North American Flora
Cortinarius purpurascens Fries, Epicr. Myc. 265. 1838
i
A garicus purpurascens Fries , Obs . Myc .2:70. 1818.
Pileus fleshy, broadly convex to subexpanded, 5-8 cm. broad; surface dark-purplishumber or entirely violet-purple when young, soon discolored and variegated with clay-color or brown, opaque, glabrous, even, with a viscid, separable pellicle; context thick, compact, tinged azure or purplish, fading to whitish in age, but changing rapidly to deep-purple when bruised, the odor and taste mild; lamellae adnexed and rounded behind, then emarginate, rather narrow, close, at first azure-blue or darker, changing to deep-purple when bruised; stipe usually short, stout, 2-5 cm. long, 10-20 mm. thick, solid, subequal, fibrillose from the cortina, the bulb not large, subemarginate to distinctly marginate, scarcely ever depressed, soon oval, purplish within, quickly deeper-colored when bruised; spores ellipsoidovoid, rough-echinulate, 8-9.5 (rarely 10) X 5-5.5 n f dark in mass.
Type locality: Sweden. Habitat: On the ground, in mixed forests.
Distribution: New England to Wisconsin, and southward to North Carolina; Colorado.
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bibliographic citation
William Alphonso Murrill, Lee Oras Overholts, Calvin Henry Kauffman. 1932. (AGARICALES); AGARICACEAE (pars); AGARICEAE (pars), HYPODENDRUM, CORTINARIUS. North American flora. vol 10(5). New York Botanical Garden, New York, NY
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Comprehensive Description

provided by North American Flora
Cortinarius subpurpurascens Fries, Epicr. Myc. 265. 1838
Cortinarius purpurascens subpurpurascens Fries, Hymen. Eur. 346. 1874.
Pileus fleshy, firm, campanulate, discoid or gibbous, then expanded, at length depressed, 5-10 cm. broad; surface viscid, purpletinged at first, yellow-ocher to ochraceoustawny with smoky-brown stains, scarcely virgate, glabrous, zoned by the decurved margin; context soon whitish, not changing to purple when bruised, compact, the odor slightly that of radish, somewhat pungent, the taste mild; lamellae adnexed-emarginate, crowded, rather narrow, purplish at first, then pecan-brown (R), becoming purplish when bruised, the edge entire; stipe subequal above the rather small, depressed-marginate, flattened bulb, 5-7 cm. long, 10-15 mm. thick, paleviolaceous, purplish where bruised, violaceous within, cortinate-fibrillose, stuffed, then tubular; spores ellipsoid-ovoid, rough, 8-9 X 5-6 m-
Type locality: Sweden.
Habitat: On the ground, in coniferous forests.
Distribution: Adirondack Mountains, New York; Olympic Mountains, Washington.
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bibliographic citation
William Alphonso Murrill, Lee Oras Overholts, Calvin Henry Kauffman. 1932. (AGARICALES); AGARICACEAE (pars); AGARICEAE (pars), HYPODENDRUM, CORTINARIUS. North American flora. vol 10(5). New York Botanical Garden, New York, NY
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Thaxterogaster purpurascens

provided by wikipedia EN

Thaxterogaster purpurascens is a species of mushroom producing fungus in the family Cortinariaceae.[2] It is commonly known as the bruising webcap.[3][4]

Taxonomy

The species was first described as Agaricus purpurascens by Elias Magnus Fries in 1818.[5] In 1838 Fries reclassified it as Cortinarius pluvius.[6][7]

The species was also placed in the segregate genus Phlegmacium by Aldabert Ricken as P. purpurascens.[1]

In 2022 the species was transferred from Cortinarius and reclassified as Thaxterogaster purpurascens based on genomic data.[8] This study also reclassified three of the variants of this species and transferred them to the distinct species: Thaxterogaster eumarginatus, Thaxterogaster occidentalis and Thaxterogaster subpurpurascens.[2]

Description

The sticky caps may range in color from brownish to grayish blue.

The cap is 3–10 cm (1.2–3.9 in) in diameter, initially convex before flattening out somewhat. The margin is rolled inward, and viscid, cuticle which is often slightly spotted, smooth and with small fugacious viscid concolorous flocci. The color varies from dirty brownish or brownish-rust to ocher or grayish bluish in the center. The margin is fibrillose (covered with roughly parallel threadlike filaments), then smooth, with a violet or reddish-violet to grayish-brown tinge, then concolorous with the center of the cap. The gills are thin and crowded closely together, broadly emarginate (notched), dark violet when young, with edges often slightly denticulate (finely toothed). The tinge and intensity of the violet coloring is similar to that of the wood blewitt (Rhodopaxillus nudus). The stem is solid, vivid violet paling to violet purple or violet brown, with a distinctly marginate bulb 3–4 cm (1.2–1.6 in) wide, otherwise almost cylindrical towards the base. The cortina (a cobweb-like partial veil consisting of silky fibrils) is violet. The flesh is violet lilac or violet, paling slightly when mature, and with a weak, unpleasant smell and mild taste. When cut or broken it turns purple, like the gills. It is an edible mushroom of medium quality.[9]

The spores are ellipsoid, slightly almond-shaped, verrucose, and measure 9–10 by 4.8–6 μm. The basidia (the spore-bearing cells) are 30–35 by 7–9 μm. On the edge of the gills there are thin-walled irregularly bottle-shaped cheilocystidia, which protrude 20–30 μm. The spore deposit is brownish rust to light brown.[9]

Distribution and habitat

The fruit bodies of Thaxterogaster purpurascens grow in groups in coniferous forests, mainly on more acid soils and are quite rare. It is distributed throughout the temperate zone of the Northern Hemisphere,[9] and has been collected from Europe and North America.[10]

See also

References

  1. ^ a b "Cortinarius purpurascens Fr". Species Fungorum. CAB International. Retrieved 2010-08-06.
  2. ^ a b "Species Fungorum - Thaxterogaster purpurascens (Fr.) Niskanen & Liimat". www.speciesfungorum.org. Retrieved 2023-01-14.
  3. ^ "Cortinarius purpurascens, Bruising Webcap mushroom". www.first-nature.com. Retrieved 2023-01-14.
  4. ^ "English names for fungi - April 2022". www.britmycolsoc.org.uk. The British Mycological Society. Retrieved 2023-01-14.
  5. ^ Fries, Elias (1818). Observationes mycologicae. Vol. 2. Havniae: sumptibus G. Bonnieri. p. 70.
  6. ^ Fries, Elias Magnus (1838). "Epicrisis Systematis mycologici". bibdigital.rjb.csic.es. p. 265. Retrieved 2023-01-14.
  7. ^ Fries EM. (1838). Epicrisis Systematis Mycologici (in Latin). Uppsala: Typographia Academica. p. 265. Retrieved 2010-08-24.
  8. ^ Liimatainen, Kare; Kim, Jan T.; Pokorny, Lisa; Kirk, Paul M.; Dentinger, Bryn; Niskanen, Tuula (2022-01-01). "Taming the beast: a revised classification of Cortinariaceae based on genomic data". Fungal Diversity. 112 (1): 89–170. doi:10.1007/s13225-022-00499-9. ISSN 1878-9129.
  9. ^ a b c Pilat Á, Ušák O. (1961). Mushrooms and other Fungi. London: Peter Nevill. p. 89.
  10. ^ Phillips R. "Cortinarius purpurascens". Rogers Mushrooms. Archived from the original on 2008-11-18. Retrieved 2010-08-24.
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Thaxterogaster purpurascens: Brief Summary

provided by wikipedia EN

Thaxterogaster purpurascens is a species of mushroom producing fungus in the family Cortinariaceae. It is commonly known as the bruising webcap.

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Wikipedia authors and editors
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wikipedia EN