| name |
Amanita arenaria |
| author |
(O. K. Mill. & E. Horak) Justo. 2010. Mycologica 102: 682. |
| name status |
nomen acceptum |
| synonyms |
≡ Torrendia arenaria O. K. Mill. & E. Horak. 1992. Mycologia 84: 65.
non Amanita arenaria K. Syme nom. inval. 1992. Survey of the larger fungi of the Two Peoples Bay Nature Reserve: 1-27. [Lacking Latin diagnosis, ICBN §36.1]
= Torrendia arenaria f. lutescens O. K. Mill. & E. Horak. 1992. Mycologia 84: 69.
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. |
515037, 358074 |
| 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.
|
| 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.
This species has an epigeous, secotioid habit and was originally described in the genus Torrendia. |
| basidiospores |
from protolog: [-/-/-] (9.2-) 10.0 - 13.5 (-15.0) × (5.0-) 6.5 - 9.2 μm, (Q = 1.29 - 1.76; Q' = 1.51), hyaline, smooth, thin-walled, acyanophilic, inamyloid, broadly ellipsoid to ellipsoid to elongate; apiculus broad; contents as occasional yellow "lipid body" (in 3% KOH); color in mass not recorded. [Note: These measurements do not conform to methodology of this site because (per protolog) the measurements included the apiculus.] |
| ecology |
from protolog: Solitary to gregarious. In sandy to silty soil associated with Allocasuarina, Eucalyptus, and/or Leptospermum. |
| material examined |
from protolog: AUSTRALIA:
WESTERN AUSTRALIA—Shire of Albany - Two Peoples Bay, 22.vi.1989 O. K. Miller 24013 [Bougher E697] (holotype, VPI VTMH-679; isotype, PERTH; isotype, ZT 4182); Two Peoples Bay Nature Reserve, 22.vi.1989 O. K. Miller 24012 [Bougher E696] (paratype, PERTH, pure culture), O. K. Miller 24015 (paratype, ZT 4181), O. K. Miller 24018 (paratype, VPI VTMH-412), O. K. Miller 24019 (paratype, ZT 4183), O. K. Miller 24027 (paratype, ZT 4180), 15.vi.1989 O. K. Miller 24953 (paratype, VPI VTMH-554); Shire of Kalamunda - unkn. loc., 2.vii.1991 O. K. Miller 25052 (paratype, VPI VTMH-551), 9.vii.1991 O. K. MIller 25106 (paratype, VPI VTMH-365), O. K. Miller 25111 (paratype of Torrendia arenaria f. lutescens, VPI VTMH-364); Unkn. LGA - Julimar Forest Reserve [31°30' S/ 116°12' E], 12.vi.1991 O. K. Miller 24848 (paratype, VPI VTMH-363). Town of Manjimup - arboretum E of Perup, 22.vi.1985 E. Horak ZT2739 (holotype of Torrendia arenaria f. lutescens, ZT2719; isotype of Torrendia arenaria f. lutescens, VPI VTMH-??). [Note: In the protolog "Miller 25106" is written "Miller 25016."—ed.] |
| discussion |
Two collections of the present species that were yellowing on surface fibrils and sometimes showed yellow staining in the context when sectioned were the basis of Torrendia arenaria f. lutescens O. K. Mill. & Horak (1992). Other than the yellowing, this material differed from the type form only in the size and shape of the spores: 9.0 - 13.4 × (6.7-) 7.6 - 9.5 (-10.2) μm, (Q = 1.10 - 1.60; Q' = 1.29).
Tulloss (2005b: 213) suggested that the yellowing specimens of the present species might not be properly treated as a separate form, but might be exhibiting the yellowing syndrome first discussed by Tulloss with regard to A. subsolitaria. The range of Q provided for f. lutescens in its protolog is rather broad and the mean is depressed toward the lower end of the range (see above), which suggests that the forms of spores may have been stunted or deformed as is often the case with amanitas exhibiting the yellowing syndrome.
Justo (2010) treated f. lutescens as a synonym of the type form on genetic grounds. |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite