Amanita nitida sensu Coker - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella

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name	Amanita nitida sensu Coker
name status	sensu
intro	The following description is based on Bas (1969).
discussion	So far as is known, Coker's material revised by Bas is the only extant material of this mushroom.—R. E. Tulloss
brief editors	RET

name

Amanita nitida sensu Coker

name status

sensu

GenBank nos.

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accession	locus	voucher	source



No data available in table

intro

The following material is based on (Bas, 1969).

pileus

from Bas (1969): 35 mm wide, white with grayish center, hemispherical, then plane, dry; context not recorded; margin appendiculate, not or faintly striate; universal veil as regularly distributed warts, gray, 1 - 2.5 mm wide, adnate, subpyramidal.

lamellae

from Bas (1969): just reaching stipe, rather crowded, cream white, 5 mm broad, with flocculose edge.

stipe

from Bas (1969): 38 × 8 mm, white, subcylindric, flocculose; bulb 25 × 20 mm, elongate-napiform, rooting; context "pale pinkish gray"; partial veil apical, flocculose, fugacious, white, striate, appressed; universal veil as subverrucose remains on top of bulb, felted, gray.

odor/taste

from Bas (1969): Odor faintly unpleasant ("chloride of lime"). Tasteless.

macrochemical
tests

none recorded.

pileipellis

from Bas (1969): as rather thick layer; filamentous undifferentiated hyphae 2 - 5 μm wide, interwoven, more or less gelatinized, in part yellowish and somewhat refractive.

lamella trama

from Bas (1969): bilateral.

subhymenium

from Bas (1969): ramose.

basidia

from Bas (1969): 45 - 55 × 11 - 13 μm, 4- and 2-sterigmate; clamps inconspicuous.

universal veil

from Bas (1969): On pileus: with elements in abundant, rather long, parallel, erect rows; filamentous hyphae 2 - 8 μm wide, scattered, branching; inflated cells predominantly ellipsoid, also globose or pyriform or elongate, up to 55 × 45 μm, with vacuolar brown pigment; vascular hyphae rather abundant.

stipe context

from Bas (1969): longitudinally acrophysalidic.

lamella edge tissue

from Bas (1969): "fringe of partly collapsed hyphae and small pyriform to clavate cells."

basidiospores

send to graphing tool

from Bas (1969): [20/1/1] 10 - 14.5 × 5.5 - 7 (-7.5) μm, (Q = 1.6 - 2.4; Q = 1.9 - 2.1), thin-walled, [amyloid(?),] elongate to cylindric, slightly depressed adaxially; apiculus sublateral, cylindric [per figure—ed.]; contents subgranular, slightly refractive, yellowish in alkaline solution; white in deposit.

ecology

from Bas (1969): Terrestrial in woods.

North Carolina: At ca. 100 m elev.

material examined

from Bas (1969): U.S.A.: NORTH CAROLINA—Orange Co. - Chapel Hill, Meeting of the Waters [35°54'04" N/ 79°02'02" W, 101 m], 18.vi.1917 W. C. Coker 2525 (NCU).

discussion

from Bas (1969): "Amanita nitida sensu Coker is closely related to A. atkinsoniana and A. onusta. The type of tissue in the warts on the cap, however, resembles most strongly that in A. atkinsoniana. Just as in that species, there are abundant oleiferous [vascular] elements, especially in the base of the warts, which turn brownish yellow in alkaline solution. Therefore the rows of inflated cells are less obvious than in the warts of A. onusta, in which oleiferous elements [vascular hyphae] are scarce and the inflated cells more strongly colored.

"The strongly elongate spores of A. nitida sensu Coker and the aberrant habit are reasons to keep it separate for the moment. The more so as Coker's collection consists of only one specimen, which probably [was] picked in bud-stage and expanded afterwards.

"Because of the uncertain status of this species and the inadequate collection on which it is based, I refrain from naming it formally."

citations

—R. E. Tulloss

editors

RET

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name	Amanita nitida sensu Coker
name status	sensu

name	Amanita nitida sensu Coker

name	Amanita nitida sensu Coker

Spore data for collections
provisionally identified as: Amanita nitida sensu Coker

Spore data sets and their composite

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.

basidiospore definition

Spore Measurements by Collection

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