| name |
Amanita coacta |
| author |
Bas. 1978. Persoonia 10: 15, figs. 25-28. |
| name status |
nomen acceptum |
| english name |
"Felted Volva Ringless Amanita" |
| synonyms |
=Amanita crebresulcata sensu Pegler. 1997. Agarics São Paulo, Brazil: ??.
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. |
308546 |
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
|
| holotypes |
INPA; isotype, L |
| revisions |
Menolli et al. 2009. Mycotaxon 107: 419–430. |
| 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.
The basidiomes are small and slender.
|
| pileus |
ca. 40 mm wide, umber (except pallid in striations), matte in dried state ("then under strong lens with fibrillose structure only visible on dark marginal ridges"), concave with or without a very slight umbo; context not described; margin densely sulcate-striate (0.5R per field notes; 0.25-0.45R in exsiccata), with 12-14 striations per 10 mm arc (measured at mid-striations); universal veil around center as few, irregularly shaped, paler gray-brown, felted, thin volval patches bearing very small darker warts on their surfaces ("under lens"). |
| lamellae |
free, crowded, farily broad, white, proably with concolorous edge; lamellulae truncate, very scarce. |
| stipe |
ca. 70 × 3 mm, tapering upward, white, in dried state (under strong lens) subflocculose; context white, unchanging; exannulate; universal veil saccate, felted-submembranous, thin, up to ca. 10 mm high, more or less breaking up into felted, gray patches "with at their surface (under strong lens) appressed paler to nearly whitish short fibrils." |
| odor/taste |
Odor lacking. Taste not recorded. |
macrochemical
tests |
none recorded. |
| basidia |
[10/1/1] 32 - 45 × 10.5 - 11.5 μm, 4-sterigmate; clamps lacking. |
| basidiospores |
from protolog: [10/1/1] 8.5 - 10.0 × 6.5 - 7.5 μm, (Q = 1.25 - 1.40; Q = 1.30; Q' = 1.30), hyaline, colorless, thin-walled, inamyloid, broadly ellipsoid to ellipsoid; apiculus proportionately small; contents usually as single oil drop; color in deposit not recorded.
type study of Wartchow (2010): [40/1/1] (6.5–) 7.5 – 10.0 (–10.5) × (4.5–) 5.5 – 7.5 (–8.0) μm, (L = 8.8 μm; W = 6.4 μm; Q = (1.24–) 1.28 – 1.47 (–1.50); Q = 1.36), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, adaxially flattened, with apex broadly rounded; apiculus proportionately small, sublateral; contents guttulate, difficult to observe; not recorded.
non-type material revised by Wartchow (2010): [142/5/4] (7.5–) 8.0 – 10.0 (–11.0) × (5.5–) 6.0 – 7.0 (–7.5) μm, (L = 8.7 – 9.1 (–9.4) μm; L’ = 8.9 μm; W = 6.5 – 7.0 μm W’ = 6.7 μm; Q = (1.14–) 1.18 – 1.56 (–1.69); Q = (1.28–) 1.31 – 1.37; Q’ = 1.33), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, infrequently elongate, adaxially flattened; apiculus sublateral to subapical; contents guttulate; color in deposit not recorded. |
| ecology |
Solitary. Brazil: Terrestrial in secondary tropical rain forest with all accompanying trees and shrubs reported as non-ectotrophic with the exception of Neea and Psychotria. |
| material examined |
from protolog: BRAZIL: AMAZONAS—Manaus, on grounds of INPA, 27.v.1977 R. Singer B9728 (holotype, INPA 66.714; isotype, L).
Wartchow (2010): BRAZIL: AMAZONAS—Manaus, on grounds of INPA [3°05'44.94" S/ 59°59'16.07" W], 27.v.1977 R. Singer B9728 (holotype, INPA 66.714; isotype, L).
SÃO PAULO—São Paulo, Parque Estadual das Fontes do Ipiranga, 21.i.1987 D. Pegler 3810 (SP 214459), 19.xi.2002 M. Capelari & D. M. Vital MC4189 (SP 393670), 11.i.2007 F. Karstedt FK841 (SP 393677), 20.iv.2007 N. Menolli Jr. et al. NMJ126 (SP 393681). |
| citations |
The recent revison by Menolli et al. (2009) is available as a PDF. (open)—R. E. Tulloss, F. Menolli |
| editors |
RET |
|
Spore data sets and their composite