| name | Amanita pausiaca |
| name status | nomen acceptum |
| author | Corner & Bas |
| images | |
| cap | The cap of A. pausiaca is 60 mm wide, plane with a slightly depressed center, dry, with a finely sulcate-striate margin. The cap is bister-olivaceous, darker and more fuscous in the center, innately streaked with darker fibrils, and more or less concentrically spotted with small grayish patches. |
| gills |
The gills are distantly free, crowded, and white. |
| stem |
The stem is 70 × 6 - 13 mm, solid, pale yellow-olivaceous, and clearer yellow near the apex. The volva is present as olivaceous, small warts. |
| spores |
The spores measure 5.1 - 6.1 × 4.4 - 5.8 µm and are amyloid and globose to broadly ellipsoid. Clamps were not observed at bases of basidia. |
| discussion |
The present species was originally described from Peninsular Malaysia. For comparison, see A. xanthomargaros Corner & Bas.—R. E. Tulloss |
| brief editors | RET |
| name | Amanita pausiaca | ||||||||||||||||||||
| author | Corner & Bas. 1962. Persoonia 2: 271, fig. 17. | ||||||||||||||||||||
| name status | nomen acceptum | ||||||||||||||||||||
| etymology | pausiacus "olivaceous" | ||||||||||||||||||||
| MycoBank nos. | 326106 | ||||||||||||||||||||
| GenBank nos. |
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| holotypes | L | ||||||||||||||||||||
| 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 of the present species. | ||||||||||||||||||||
| pileus | from protolog: ca. 60 mm wide, bistre-olivaceous, darker and more fuscous over disc, innately streaked with darker fibrils, planar with slight depression over disc, dry; context white except fuscous olive below pileipellis, thin, 4 mm thick above stipe; margin finely sulcate-striate; universal veil as more or less concentrically arranged small patches, grayish. | ||||||||||||||||||||
| lamellae | from protolog: distantly free, crowded, white, 5 - 6 mm broad, 81 primaries; lamellulae attenuate, with 1 - 3 between each otherwise adjacent pair of lamellae. | ||||||||||||||||||||
| gleba | double click in markup mode to edit. | ||||||||||||||||||||
| stipe | from protolog: ca. 70 × 6 mm (width measured at apex), pale yellow-olivaceous, clearer yellow near apex, fibrillose below partial veil, minutely pruinose above; bulb clavate, 13 mm wide; context solid, white; partial veil pendent, membranous, 10 mm measured radially from attachment to edge, white with yellowish subverrucose edge; universal veil at base with 2 - 3 rings of fuscous-olivaceous small warts of volva. | ||||||||||||||||||||
| odor/taste | neither recorded. | ||||||||||||||||||||
| macrochemical tests |
none recorded. | ||||||||||||||||||||
| pileipellis | from protolog: "rather thin"; suprapellis gelatinized; subpellis ungelatinized; filamentous hyphae 1.5 - 4.0 µm wide, with brown contents, radially arranged in subpellis, disordered in suprapellis; clamps not observed. | ||||||||||||||||||||
| pileus context | not described. | ||||||||||||||||||||
| lamella trama | not described. | ||||||||||||||||||||
| subhymenium | not described. | ||||||||||||||||||||
| basidia | not described. | ||||||||||||||||||||
| universal veil | from protolog: On pileus: not described. On stipe base: filamentous hyphae 2.5 - 4 (-7) µm wide, plentiful, branching; inflated cells, mainly globose, infrequently ellipsoid or fusiform, presumably mostly terminal, pale yellowish-brownish in NH4OH, relative plenitude not described; clamps not observed. | ||||||||||||||||||||
| stipe context | from protolog: longitudinally acrophysalidic; acrophysalides up to 200 × 30 µm and perhaps larger; clamps not observed. | ||||||||||||||||||||
| partial veil | not described. | ||||||||||||||||||||
| lamella edge tissue | not described. | ||||||||||||||||||||
| basidiospores | from protolog: [-/-/-] 5.1 - 6.1 × 4.4 - 5.8 μm, (Q = 1.0 - 1.20; Q = 1.10 - 1.15), hyaline, colorless, smooth, amyloid, globose to subglobose to broadly ellipsoid; apiculus proportionately medium-large; contents not recorded; color in deposit not recorded. | ||||||||||||||||||||
| ecology | from protolog: Terrestrial in forest. | ||||||||||||||||||||
| material examined | from protolog: MALAYSIA: NEGERI SEMBILAN— Angsi For. Reserve, 3.vii.1930 E. J. H. Corner s.n. (holotype, L). | ||||||||||||||||||||
| discussion |
from protolog: "This species is characterized by colors like those of Amanita phalloides and a volva like that of A. rubescens. Moreover, the very small spores are distinctive. Compare A. xanthomargaros." See technical tab discussion for A. xanthomargaros. | ||||||||||||||||||||
| citations | —R. E. Tulloss | ||||||||||||||||||||
| editors | RET | ||||||||||||||||||||
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| name | Amanita pausiaca |
| bottom links |
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| name | Amanita pausiaca |
| bottom links |
[ Section Validae page. ] [ Amanita Studies home. ] [ Keys & Checklists ] |
Spore data sets and their composite
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