Amanita sp-Arora-01-555

name

Amanita sp-Arora-01-555

name status

cryptonomen temporarium

english name

"Zambian Ringed Ringless Amanita"

GenBank nos.

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accession	locus	voucher	source
KU186808	nrLSU	31.xii.2000-7.i.2001 David Arora 01-555 (RET 345-3)	L. V. Kudzma, Annandale, NJ
KU186807	nrITS	31.xii.2000-7.i.2001 David Arora 01-555 (RET 345-3)	L. V. Kudzma, Annandale, NJ

pileus

yellow-brown, umbonate; context ??; margin short striate, nonappendiculate; universal veil absent.

lamellae

??; lamellulae truncate.

stipe

tall, with unknown amount of stipe base missing in sole exsiccatum; partial veil membranous, superior, persistent, proportionately narrow; universal veil as pallid membranous patch on lower stipe, ??.

odor/taste

neither recorded.

macrochemical
tests

none recorded.

universal veil

longitudinally acrophysalidic.

lamella edge tissue

sterile.

basidiospores

send to graphing tool

[40/1/1] (10.2-) 10.5 - 13.2 (-15.0) × (7.3-) 7.9 - 9.4 (-10.5) μm, (L = 11.9 μm; W = 8.7 μm; Q = (1.21-) 1.26 - 1.47 (-1.60); Q = 1.36), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, usually adaxially flattened; apiculus sublateral, cylindric; contents mono- to multiguttulate (oil drop type); color in deposit unrecorded.

ecology

not recorded.

material examined

ZAMBIA: NORTHERN PROV.—Mpika Distr. - ca. Mpika, 22 km off Great North Hwy., Mutinondo Wilderness Area, 31.xii.2000-7.i.2001 David Arora 01-555 (RET 345-3, nrITS & nrLSU seq'd.).

discussion

The most similar nrLSU sequence fragment in GenBank is a fragment of less than 400 characters from A. madagascariensis, an annulate species of sect. Vaginatae.

The following figure provides a comparison of the sporographs of the present species and A. madagascariensis:

citations

—R. E. Tulloss, L. V. Kudzma, and D. Arora

editors

RET

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name	Amanita sp-Arora-01-555
name status	cryptonomen temporarium
english name	"Zambian Ringed Ringless Amanita"
images
intro	This species is based on a single specimen from Zambia. Molecular data has been obtained. We are inquiring concerning more morphological data.
cap	The umbonate cap of this species is yellow-brown and bears quite short marginal striations.
gills	The short gills of this species are truncate.
stem	The slender stem of A. sp-Arora-01-555 bears a narrow, membranous ring near the top. In the one specimen that is known, a membranous patch of whitish volva was found low on the stem.
odor/taste	Neither odor nor taste were recorded for this taxon.
spores	The spores of this species measure (10.2-) 10.5 - 13.2 (-15.0) × (7.3-) 7.9 - 9.4 (-10.5) μm and are broadly ellipsoid to ellipsoid and inamyloid. Clamps are not found at the bases of basidia.
discussion	The present species is known only from a single collection made in Zambia's Northern Province. Amanita sp-Arora_01-555 somewhat near A. madagascariensis based on the limited genetic data available concerning the latter. Both taxa belong in the small group within section Vaginatae that have rings on their stems.—R. E. Tulloss
brief editors	RET

Spore Measurements by Collection