| name | Amanita dumosorum |
| name status | nomen acceptum |
| author | D. A. Reid |
| english name | "Thorn-Bush Amanita" |
| intro | Description based on Reid (1980). |
| cap | The cap of Amanita dumosorum is 65 mm wide, plano-convex, pale beige becoming pale straw-colored when dried, with a striate margin. The cap is ornamented with a single, large, thin, white patch of volval tissue. |
| gills | The gills are off-white. |
| stem | The stem is 65 × 9 mm, cylindric or slightly clavate, white becoming straw-colored when dried. |
| spores | The spores measure 7.0 - 8.8 × 6.0 - 6.8 µm and are broadly ellipsoid to ovate. Clamps are absent at base of basidia. |
| discussion | Originally described from "open scrubby area" in the state of Western Australia.—R. E. Tulloss |
| brief editors | RET |
| name | Amanita dumosorum | ||||||||||||||||||||
| author | D. A. Reid. 1978. Victorian Naturalist 95: 47, figs. 8(a, c), 56. | ||||||||||||||||||||
| name status | nomen acceptum | ||||||||||||||||||||
| english name | "Thorn-Bush Amanita" | ||||||||||||||||||||
| MycoBank nos. | 308550 | ||||||||||||||||||||
| GenBank nos. |
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| holotypes | K | ||||||||||||||||||||
| revisions | Reid. 1980. Austral. J. Bot., Suppl. Ser. 8: 22, figs 8(a-c), 56. | ||||||||||||||||||||
| 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): 65 mm wide, plano-convex, pale beige becoming pale straw-colored when dried; context not described; margin striate, naked; universal veil as single large thin white patch almost 20 mm wide. | ||||||||||||||||||||
| lamellae | from Reid (1980): off-white. | ||||||||||||||||||||
| stipe | from Reid (1980): 65 × 9 mm, white, becoming straw-colored when dried, cylindric or slightly clavate; bulb not described; context not described; partial veil narrow, membranous, inconspicuous, striate above; universal veil lacking. | ||||||||||||||||||||
| odor/taste | not described. | ||||||||||||||||||||
| macrochemical tests |
none described. | ||||||||||||||||||||
| pileipellis | not described in protolog. | ||||||||||||||||||||
| pileus context | not described in protolog. | ||||||||||||||||||||
| lamella trama | not described in protolog. | ||||||||||||||||||||
| basidia | from Reid (1980): up to 46 × 10 μm, 4-sterigmate; clamps lacking. | ||||||||||||||||||||
| universal veil | from Reid (1980): On pileus: entirely hyphal; hyphae mostly thin-walled, rarely with slightly thickened walls, hyaline, branched, 4 - 18 μm wide; clamps lacking. | ||||||||||||||||||||
| stipe context | not described in protolog. | ||||||||||||||||||||
| lamella edge tissue | from Reid (1980): inflated cells often in short chains, with ultimate cell clavate, ovate, or subglobose, up to 35 × 18 μm. [Note: This tissue misdescribed by Reid as cheilocystidia.—ed.] | ||||||||||||||||||||
| basidiospores | from protolog: [-/1/1] 7.0 - 8.8 × 6.0 - 7.8 μm, (est. Q = 1.10 - 1.20), amyloid, subglobose to broadly ellipsoid. | ||||||||||||||||||||
| ecology | from protolog: In open scrubby area. | ||||||||||||||||||||
| material examined | from protolog: AUSTRALIA: WESTERN AUSTRALIA—Shire of Albany - Two Peoples Bay, 27 km ENE of Albany, 12.v.1986 D. A. & D. G. Reid, R. Hilton & N. Brittan s.n. (holotype, K). | ||||||||||||||||||||
| discussion |
The amyloid spores require this species to be placed in subgenus Lepidella. The pileus margin is described as striate, which is highly unusual for the subgenus. In his annotated copy of the protolog, Bas's first recorded thought (later lined out) was that the species must belong in either sect. Validae or Phalloideae; the annulate stipe, striate cap margin, and small subglobose to broadly ellipsoid spores inclinded us in the same direction. However, Bas's notes indicate that he considered the thin, entirely hyphal patch on the pileus to be the most telling factor; and on this basis, he proposed the species might belong in Amanita [sect. Lepidella] subsect. Gymnopodae. For the time being, we have placed the taxon in sect. Lepidella and consider that revision of the type is necessary in hopes of gaining a better understanding of this taxon. The present species was not treated by Wood (1997). | ||||||||||||||||||||
| citations | —R. E. Tulloss | ||||||||||||||||||||
| editors | RET | ||||||||||||||||||||
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| name | Amanita dumosorum |
| bottom links |
[ Section Lepidella page. ]
[ Amanita Studies home. ]
[ Keys & Checklists ] |
| name | Amanita dumosorum |
| bottom links |
[ Section Lepidella page. ]
[ Amanita Studies home. ]
[ Keys & Checklists ] |
Spore data sets and their composite
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