Amanita parcivolvata: Difference between revisions
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==Taxonomy== |
==Taxonomy== |
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This ''[[Amanita]]'' is in the section ''Amanita''. It was first described by [[Charles Horton Peck]] in 1900 as ''Amanitopsis parcivolvata''. [[William Alphonso Murrill| Murrill]] the placed it in the now defunct genus, ''Vaginata'' in 1910, comparing it to the local specimens of ''[[Amanita vaginata| Vaginata plumbea]]'' in [[Blacksburg, Virginia]] and finding it distinct.<ref>{{cite book | last = New York Botanical Garden | | editorn-last = Murrill | title = ''Mycologia, Volume V'' | page = 83 | publisher = Mycological Society of America | year = 1913}}</ref> However, it was not formally described in literature until 1913. J.E. Gilbert placed in the genus ''[[Amanita]]'' in 1941, where it resides to this day. |
This ''[[Amanita]]'' is in the subgenus ''Amanita'' and in the section ''Amanita''. It was first described by [[Charles Horton Peck]] in 1900 as ''Amanitopsis parcivolvata''. [[William Alphonso Murrill| Murrill]] the placed it in the now defunct genus, ''Vaginata'' in 1910, comparing it to the local specimens of ''[[Amanita vaginata| Vaginata plumbea]]'' in [[Blacksburg, Virginia]] and finding it distinct.<ref>{{cite book | last = New York Botanical Garden | | editorn-last = Murrill | title = ''Mycologia, Volume V'' | page = 83 | publisher = Mycological Society of America | year = 1913}}</ref> However, it was not formally described in literature until 1913. J.E. Gilbert placed in the genus ''[[Amanita]]'' in 1941, where it resides to this day. |
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==Description== |
==Description== |
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Revision as of 01:29, 27 December 2011
| Amanita parcivolvata | |
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| Scientific classification | |
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| Species: | A. parcivolvata
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| Binomial name | |
| Amanita parcivolvata J.E.Gilbert (1941)
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| Synonyms[1] | |
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Amanitopsis parcivolvata Peck (1900) Vaginata parcivolvata (Peck) Murrill (1913) | |
Amanita parcivolvata | |
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 | Gills on hymenium |
 | Cap is ovate or flat |
 | Hymenium is free |
 | Stipe is bare |
 | Spore print is white |
 | Ecology is mycorrhizal |
 | Edibility is inedible |
Amanita parcivolvata is a fungus that produces fruit bodies that vaguely resemble those of Amanita muscaria. It is differentiated, however, by its lack of an annulus and by the volval deposits on its stipe and bulb. It occasionally lacks a stipe bulb entirely, instead just tapering to a point in the ground, with powdery volval deposits. It ranges from 3–12 cm (1.2–4.7 in) in length and is occasional to common in the Southeastern United States,[2] occurring primarily in Quercus forests though it has been observed in forests with a mix of conifers and oaks.[3]
Taxonomy
This Amanita is in the subgenus Amanita and in the section Amanita. It was first described by Charles Horton Peck in 1900 as Amanitopsis parcivolvata. Murrill the placed it in the now defunct genus, Vaginata in 1910, comparing it to the local specimens of Vaginata plumbea in Blacksburg, Virginia and finding it distinct.[4] However, it was not formally described in literature until 1913. J.E. Gilbert placed in the genus Amanita in 1941, where it resides to this day.
Description
Cap: The pileus is bright red ranging from 3–12 cm (1.2–4.7 in) in diameter with warts which range in color from pale yellow to white. With rain, these can wash off, giving it a somewhat similar appearance to an Amanita in section Caesareae from a distance, especially if all but the cap is covered by detritus.
Gills: The lamellae are white to pale yellow, closely spaced, free from the stipe, and sometimes with a serrated margin.
Stipe 3–12 cm (1.2–4.7 in) in length and about 1.5 cm (0.59 in) in width, with pale yellow to white powdery volval remnants all along the stipe. The volva, if it even may be called that, is rather undeveloped as compared to other members of Amanita.
Microscopic Features According to Rod Tulloss, the spores of Amanita parcivolvata measure (8.4-) 9.1-11.5 (-12.6) X (5.6-) 6.3-7.9 (-8.0) μm, are inamyloid, and the basidia rarely have clamps at bases. [5]
Chemical Reactions: With KOH, the red color of the cap quickly fades to an orange, then yellow color.
References
- ^ "Amanita parcivolvata (Peck) J.E. Gilbert 1941". MycoBank. International Mycological Association. Retrieved 2011-12-24.
- ^ Bessette, Alan R. (2007). Mushrooms of the Southeastern United States. Syracuse University Press. ISBN 0-8156-3112-X.
{{cite book}}: Unknown parameter|coauthors=ignored (|author=suggested) (help) - ^ Kuo, Michael (March 2008). "Amanita parcivolvata". Retrieved December 25, 2011.
- ^ New York Botanical Garden (1913). Mycologia, Volume V. Mycological Society of America. p. 83.
{{cite book}}: Cite has empty unknown parameter:|1=(help); Unknown parameter|editorn-last=ignored (help) - ^ Tulloss, Rod. "Amanita parcivolvata". Retrieved December 25, 2011.