name | Amanita virginea |
name status | nomen acceptum |
author | Massee |
english name | "Virgin Lepidella" |
images | |
cap |
The cap of A. virginea is 100 - 155 mm wide, convex, then plane or slightly concave, dry, white, smooth, glabrous, with a appendiculate margin. The cap is covered with a thin, soft, mealy, white layer, and set with hard, conical, white, separable warts. |
gills |
The gills are free, rather crowded, broad, and white. |
stem |
The stem is 60 - 100 × 20 - 50 mm, more or less annulate, white, mealy, with small, transverse scales up to the apex. The volva is present as more less conical warts. |
spores |
The spores measure 7.0 - 9.0 × 6.0 -7.5 µm and are amyloid and broadly ellipsoid. Clamps are numerous at bases of basidia. |
discussion |
Amanita virginea was originally described from Singapore. Amanita sumatrensis (a synonym) was originally described from Indonesia (Java and Sumatra). Bas (1969) placed A. virginea in his stirps Virginea as its sole
member. He states that he isolated the present species from his stirps Chlorinosma (see
A. chlorinosma (Peck) Lloyd) because of the much more coherent volva of
A. virginea. The volva is coherent despite the fact that the tissue is almost entirely composed of
inflated cells. For some reason these cells stick together in the present species. |
brief editors | RET |
name | Amanita virginea | ||||||||
author | Massee. 1908. Bull. Misc. Inform. Kew 1908: 1. | ||||||||
name status | nomen acceptum | ||||||||
english name | "Virgin Lepidella" | ||||||||
synonyms |
=Amanita sumatrensis Boedijn. 1951. Sydowia 5: 326, fig. 5(1). The editors of this site owe a great debt to Dr. Cornelis Bas whose famous cigar box files of Amanita nomenclatural information gathered over three or more decades were made available to RET for computerization and make up the lion's share of the nomenclatural information presented on this site. | ||||||||
MycoBank nos. | 163396, 292463 | ||||||||
GenBank nos. |
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holotypes | A. virginea—K | ||||||||
lectotypes | A. sumatrensis—BO | ||||||||
lectotypifications | A. sumatrensis—Bas. 1969. Persoonia 5: 488. | ||||||||
revisions |
Corner and Bas. 1962. Persoonia 2: 248, figs. 6-8. Bas. 1969. Persoonia 5: 487, figs. 247-249. | ||||||||
intro |
The following text may make multiple use of each data field. The field may contain magenta text presenting data from a type study and/or revision of other original material cited in the protolog of the present taxon. Macroscopic descriptions in magenta are a combination of data from the protolog and additional observations made on the exiccata during revision of the cited original material. The same field may also contain black text, which is data from a revision of the present taxon (including non-type material and/or material not cited in the protolog). Paragraphs of black text will be labeled if further subdivision of this text is appropriate. Olive text indicates a specimen that has not been thoroughly examined (for example, for microscopic details) and marks other places in the text where data is missing or uncertain. The material below is derived from the revisions of Corner & Bas (1962) and of Bas (1969). | ||||||||
basidiospores |
from type per Corner & Bas (1962): [-/-/-] 6.8 - 8.1 (-9.0) × 6.0 - 7.4 μm, (Q = 1.10 - 1.30; Q = 1.20), hyaline, colorless, smooth, amyloid, broadly ellipsoid; apiculus not described; contents cloudy granular; color in deposit not recorded. [Spores from fresh material were reported as 8.0 - 9.0 × 6.0 - 6.5 μm.] from Bas (1969): [20/2/2] 7.0 - 9.0 × 6.0 - 7.5 μm, (Q = 1.10 - 1.30; Q = 1.20), colorless, hyaline, thin-walled, amyloid, subglobose to broadly ellipsoid; apiculus not described; contents refractive, granular; white in deposit per van Overeem (Bas 1969: 488). | ||||||||
ecology | from Corner & Bas (1962): Terrestrial in tropical forest. Singapore: Under Quercus argentea, appearing late in rainy seasons—bout April and December. | ||||||||
material examined |
from Corner & Bas (1962): SINGAPORE: Botanic Garden, s.d. Ridley 87 I (holotype, K, exsiccatum and drawing); Garden's Jungle, from Bas (1969): INDONESIA: JAVA—unkn. loc., s.d. C. van Overeem 1495 (plate only, BO). SUMATRA—Palembang, Talang Betulu, 12.xi.1939 B. D. van 't Woudt 30 (lectotype of A. sumatrensis, BO 17143); Batang Palupuh, vii.1924 E. Jacobson 2614 (syntype of A. sumatrensis, plate in L, material in BO n.v. MALAYSIA: SARAWAK—Bintulu, 3.vii.1966 Ding Hou 450 (L). SINGAPORE: Botanic Garden, s.d. Ridley 87 I (holotype, K, exsiccatum and drawing); Garden's Jungle, | ||||||||
citations | —R. E. Tulloss | ||||||||
editors | RET | ||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
name | Amanita virginea |
name status | nomen acceptum |
author | Massee |
english name | "Virgin Lepidella" |
images | |
drawing | Dr. C. Bas (1969) - (1) reproduced by courtesy of Persoonia, Leiden, the Netherlands. |
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer; and explanations prepared for this site talk about specimen-observer pairs associated with each data set. Combining more data into a single data set is non-optimal because it obscures observer differences (which may be valuable for instructional purposes, for example) and may obscure instances in which a single collection inadvertently contains a mixture of taxa.