name | Amanita aureofloccosa |
name status | nomen acceptum |
author | Bas |
english name | "Golden Floccose Lepidella" |
images | |
cap |
The cap of A. aureofloccosa is up to 80 mm wide, plano-convex, rather thin-fleshed, with a nonsulcate margin. The cap is golden yellow with an orange-yellow, pulverulent-floccose to squamulose, detersile covering. |
gills |
The gills are free, rather crowded, narrow to moderately broad, and white. The short gills are attenuate. |
stem |
The stem is up to 140 × 7 - 18 mm, tapering upward, hollow, pale yellow at the base and top, and the rest covered by orange-yellow, floccose scales. |
spores |
The spores measure (6.0-) 7.0 - 8.5 (-9.0) × (6.0-) 6.5 - 8.5 µm and are amyloid and globose to subglobose. Clamps are not found at bases of basidia. |
discussion |
Amanita aureofloccosa was originally described as a Lepiota from what is now the Republic of Congo. It was collected in dry forest. Bas placed the present species in his stirps Thiersii. See A. thiersii Bas for information on other taxa now placed in that stirps.—R. E. Tulloss |
brief editors | RET |
name | Amanita aureofloccosa | ||||||||
author | Bas. 1969. Persoonia 5: 384, figs. 92-95. | ||||||||
name status | nomen acceptum | ||||||||
english name | "Golden Floccose Lepidella" | ||||||||
synonyms |
≡Lepiota aurea Beeli. 1927. Bull. Soc. Roy. Bot. Belgique 59: 105, pl. 1 (fig. 11).
=Lepiota zenkeri Henn. 1897. Bot. Jahrb. Syst. 23: 555. [per Pegler (1968. Kew Bull. 21: 503)] 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. | 308537, 244190 | ||||||||
GenBank nos. |
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| ||||||||
lectotypes | BR 2229 | ||||||||
epitypes | K 173243 | ||||||||
lectotypifications | Bas. 1969. Persoonia 5: 384. | ||||||||
epitypifications | Wartchow et al. 2015. Brazil J. Bot. 38(3): 642. | ||||||||
type studies | Bas. 1969. Persoonia 5: 384-385. | ||||||||
selected illustrations | Beeli. 1936. Fl. Iconogr. Champ. Congo 2: 44, pl. 8 (fig. 10). | ||||||||
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 and the type study of Bas (1969). Bas (1969): Basidiomes medium-sized, slender. | ||||||||
pileus |
protolog: 80 mm wide, yellow,
plano-convex; context white, thin;
margin not described; universal veil as
covering of orange farinaceous squamules, easily
removed. Bas (1969): up to 80 mm wide, golden yellow, plano-convex; context rather thin, white; margin nonstriate, appendiculate; universal veil as orange-yellow pulverulent-floccose to squamulose covering, detersile. | ||||||||
lamellae |
protolog: free, not remote,
white. Bas (1969): free, rather crowded, white, narrow to moderately broad, with entire edge; lamellulae attenuate. | ||||||||
stipe |
protolog: 140 × 12.5 mm,
narrowing upward, 7 mm wide at apex, 18 mm wide at
base, with base rounded, decorated by universal veil
(see below); context white; partial
veil "membranous, friable," orange, to 20% of
pileus (width?); universal veil decorating
stipe from partial veil to several cm above
base. Bas (1969): up to 140 × 7 - 18 mm, pale yellow (visible at top and at base), narrowing upward; bulb absent or slight; context hollow, white; partial veil apical, pendent, submembranous-subpulverulent, orange-tinged; universal veil as orange-yellow floccose scales over most of stipe. | ||||||||
odor/taste | neither recorded. | ||||||||
macrochemical tests |
none described. | ||||||||
pileipellis | Bas (1969): difficult to delimit from pileus context and universal veil remnants, not gelatinized, as rather thick yellowish-brownish layer; filamentous hyphae 4 - 10 (-15) μm wide, repent interwoven, with some slightly encrusted. | ||||||||
pileus context | not described. | ||||||||
lamella trama | Bas (1969): bilateral, divergent, with divergent elements up to 30 μm wide, inflated terminal cells probably lacking. | ||||||||
subhymenium | Bas (1969): cellular. | ||||||||
basidia | Bas (1969): 35 - 40 × 7 - 8 μm, 4-sterigmata; clamps not observed. | ||||||||
universal veil | Bas (1969): On pileus: inflated cells yellowish-brown, subcylindric to elongate-fusiform to slenderly clavate, up to 210 × 40 μm, in loosely arranged, interwoven, periclinally to anticlinally oriented chains. On stipe: similar to material on pileus, but with elements usually smaller; filamentous hyphae 3 - 10 μm wide. | ||||||||
stipe context | Bas (1969): longitudinally acrophysalidic; filamentous hyphae 3 - 10 μm wide; acrophysalides up to 400 × 40 μm, terminal singly or in chains. | ||||||||
partial veil | not described. | ||||||||
lamella edge tissue | Bas (1969): not found. | ||||||||
basidiospores |
protolog: 7 - 8 μm in diameter, globose, hyaline. Bas (1969): [20/1/1] (6.0-) 7.0 - 8.5 (-9.0) × (6.0-) 6.5 - 8.5 μm, (Q = 1.0 - 1.10), colorless, hyaline, with slightly thickened walls, amyloid, globose to sublgobose, slightly attenuating toward apiculus; apiculus rather strongly projecting; contents guttulate; white in deposit. | ||||||||
ecology |
protolog: In groups.
Under brush in dry forest. Bas (1969): Gregarious. In dry forest. | ||||||||
material examined |
protolog: CONGO,
DEMOCRATIC REPUBLIC OF: PROV.
EQUATEUR—Territoire Coquilhatville - Eala,
iv.1923 M. Goossens-Fontana 280 (p.p.) (lectotype,
BR A 2229). Bas (1969): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Coquilhatville - Eala, iv.1923 M. Goossens-Fontana 280 (p.p.) (lectotype, BR A 2229). RET: SOUTH AFRICA: GAUTENG—Pretoria, Moreleta Kloof Nat. Res. [25.8157º S/ 28.2866º E, 4892 m], 14.i.2017 Liz Popich s.n. [mushroomobserver #267222] (RET 777-4, ?? seq'd.). | ||||||||
discussion |
Bas (1969):
"The fruit-bodies of
Goossens-Fontana 280 were collected on at least two
different dates. As Beeli
(1927)
mentioned April 1923 as the collection date in the
protologue, the part of Goossens-Fontana 280
collected on that date is selected as
lectotype. The rest of the specimens of
Goossens-Fontana 280, the collection date of which
is uncertain, represents one or more syntypes,
cited indirectly in the original description, viz.
by the number 280. However that may be, all
specimens of Goossens-Fontana 280 appear to be
conspecific. "Amanita aureofloccosa from Central Africa is the only species in section Lepidella with really bright colours. Yet the type of spore, the type volva, and the slender, early hollow stem demonstrate such a close affinity to A. thiersii that it must be placed in the same stirps as that species." Wartchow et al. (2015) report this species from semideciduous, seasonal forest in the state of Rio Grande do Sul, Brazil. | ||||||||
citations | —R. E. Tulloss | ||||||||
editors | RET | ||||||||
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name | Amanita aureofloccosa |
name status | nomen acceptum |
author | Bas |
english name | "Golden Floccose Lepidella" |
images | |
photo | Liz Popich - (1) Moreleta Kloof Nature Reserve, Pretoria, Gauteng, South Africa. (RET 777-4) [Note: Unedited and untrimmed originals of these images can be found here.—ed.] |
drawing | Dr. Cornelis Bas (1969) (reproduced by courtesy of Persoonia, Leiden, the Netherlands) |
name | Amanita aureofloccosa |
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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.