Amanita sp-QUE01

name

Amanita sp-QUE01

author

Tulloss

name status

cryptonomen temporarium

GenBank nos.

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accession	locus	voucher	source
JX844732	nrITS	6.viii.1996 Yves Lamoureux 2866 (CMMTL; RET 251-4)	S. Sanchez et al., (direct deposit), Roy. Ontario Mus., Toronto

intro

pileus

not virgate, weakly umbonate.

lamellae

??; lamellulae truncate.

stipe

inserted deeply in soil.

odor/taste

weak. Taste not recorded.

macrochemical
tests

none recorded

basidiospores

send to graphing tool

[20/1/1] 10.8 - 13.0 (-14.2) × (8.0-) 8.2 - 10.2 (-10.5) μm, (L = 11.9 μm; W = 9.2 μm; Q = (1.16-) 1.18 - 1.41 (-1.49); Q = 1.30), hyaline, colorless, ??, thin-walled, inamyloid??, broadly ellipsoid to ellipsoid, adaxially flattened; apiculus sublateral, broadly truncate-conic; contents mono- to multiguttulate to granular; color in deposit unknown.

ecology

In sandy soil, at forest border under Acer, Fagus, Ostrya, and Tilia.

material examined

CANADA: QUÉBEC—Région Montérégie - Saint-Bruno-de-Montarville, 6.viii.1996 Yves Lamoureux 2866 (CMMTL; RET 251-4).

discussion

This mushroom is known from a single collection with very limited annotation. Utilizing the little information that has resulted from a brief investigation, the most applicable existing name seemed to RET to be A. calyptrata var. albescens a poorly known taxon originally described from Saratoga Co., New York, U. S. A. A sporograph comparison of the present entity with that Peck's A. calyptrata var. albescens is provided below:

A sporograph comparison with another pallid, NE U.S. species of sect. Caesareae is provided below.

Sometimes, individual specimens of A. spreta can be very pale to white. A sporograph comparison of the present taxon to A. spreta is provided here.

A preliminary molecular study (unpublished) of the specimen on which this "taxon" is based shows that the specimen is phylogenetically closest to A. murrilliana in a sample of nearly 60 taxa of sect. Caesareae; however, due to the known morphological difference (spore width) and some phylogenetic differences (ca. 8 bp limited to ITS1 or 1.52% of the single nrITS sequence obtained), RET hesitates to place the present collection in A. murrilliana at present.

citations

—R. E. Tulloss

editors

RET

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