| name | Amanita gossypinoannulata |
| name status | nomen acceptum |
| author | D. A. Reid |
| english name | "Cotton-Veiled Lepidella" |
| intro |
Description based on Reid (1980). |
| cap |
The cap of Amanita gossypino-annulata is 22 - 40 mm wide, convex then plano-convex, pale fawn, with a smooth margin. The cap has a large, thin, white, felt-like patch of volval tissue, disappearing with age. |
| gills |
The gills are white. |
| stem |
The stem is about 30 × 5 mm, cylindric, white, with a markedly abrupt, marginate bulb, up to 12 mm wide. The ring is "well-developed but thick and cottony." Reid found no evidence of volva on the bulb. |
| spores |
The spores measure 7.0 - 10.0 × 6.2 - 9.0 µm and are globose to subglobose, occasionally broadly ellipsoid and amyloid Clamps are present at base of basidia. |
| discussion |
This species was originally described from the state of Victoria, Australia. This species is known only from the type. According to the key of Bas (1969), this species may best fit in Bas' stirps Grossa, near A. farinacea (Cooke & Massee) Cleland & Cheel. The latter may differ in the microscopical details of the volva.—R. E. Tulloss |
| brief editors | RET |
| name | Amanita gossypinoannulata | ||||||||||||||||||||
| author | ("gossypino-annulata") D. A. Reid. 1978. Victorian Naturalist 95: 47. | ||||||||||||||||||||
| name status | nomen acceptum | ||||||||||||||||||||
| english name | "Cotton-Veiled Lepidella" | ||||||||||||||||||||
| MycoBank nos. | 308553 | ||||||||||||||||||||
| GenBank nos. |
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| holotypes | K | ||||||||||||||||||||
| selected illustrations | Reid. 1980. Austral. J. Bot., Suppl. Ser. 8: 26, figs. 13(a-c), 63. | ||||||||||||||||||||
| 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 following material is derived from the protolog and from (Reid, 1980). | ||||||||||||||||||||
| pileus | from Reid (1980): 22 - 40 mm wide, pale fawn, convex then plano-convex; context not described; margin smooth; universal veil as large thin white felt-like patch, disappearing with age. | ||||||||||||||||||||
| lamellae | from Reid (1980): white. | ||||||||||||||||||||
| stipe | from Reid (1980): about 30 × 5 mm, white, cyindric; bulb conspicuously differentiated and marginate, up to 12 mm wide; context not described; partial veil well-developed, thick, cottony; universal veil absent. | ||||||||||||||||||||
| odor/taste | not recorded. | ||||||||||||||||||||
| macrochemical tests |
none recorded. | ||||||||||||||||||||
| subhymenium | from Reid (1980): clamps sometimes present. | ||||||||||||||||||||
| basidia | from Reid (1980): up to 59 × 11.0 μm, 4-sterigmate; clamps often present. | ||||||||||||||||||||
| universal veil | from Reid (1980): On pileus: hyphae 2.5 - 5.0 μm wide, hyaline, thin-walled, with irregular orientation, sometimes encrusted; inflated cells ellipsoid to ovate to spherical, "rather small," mostly in chains, up to 30 μm wide; clamps occasional. | ||||||||||||||||||||
| lamella edge tissue | from Reid (1980): inflated cells often short catenulate, with ulitimate segment globose or ovate and up to 20 μm wide with short stalk. [Note: This tissue misdescribed by Reid as cheilocystidia.—ed.] | ||||||||||||||||||||
| basidiospores | from protolog: [-/-/1] 7.0 - 10.0 × 6.2 - 9.0 μm, (est. Q = 1.10 - 1.15), amyloid, subglobose; apiculus not recorded; contents not recorded; color in deposit not recorded. | ||||||||||||||||||||
| ecology | not described. | ||||||||||||||||||||
| material examined | from protolog: AUSTRALIA: VICTORIA—Shire of South Gippsland - Wilson's Promontory Nat. Pk., Tidal River, Lilly Pilly Gully, 2.v.1976 D. A. & D. G. Reid, s.n. (holotype, K). | ||||||||||||||||||||
| discussion |
The small amyloid spores, presence of an partial veil, and a marginate bulb at the stipe base suggest the possibility of placement of this species in Amanita sect. Validae; however, there are no known taxa in this section that bear clamps. This taxon is most likely to belong in sect. Lepidella, probably in Bas' stirps Grossa, which is where we have placed it on this site. The species is not well-known and further research is required. The description of this species by Wood (1997) is not completely conformant with the protolog. For example, the bulb on the stipe base is described as completely globose; and this is emphasized by the illustration—the bulb depicted is certainly not marginate. The universal veil tissues are said to contain common inflated cells. Unfortunately, both authors spend a significant amount of time describing the lamella edge tissue, which (at least to date) has not played a significant role in the taxonomy and systematics of section Lepidella. At present, we cannot be sure that Wood is describing Reid's taxon and have not included Wood's data on this page. | ||||||||||||||||||||
| citations | —R. E. Tulloss | ||||||||||||||||||||
| editors | RET | ||||||||||||||||||||
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