Amanita pyramidifera - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita pyramidifera
name status nomen acceptum
author D. A. Reid
english name "Pyramid Builder Lepidella"
intro

The following description is based on Reid (1980).

cap

The cap of Amanita pyramidifera is 20 - 30 mm wide, plano-convex, grayish-buff, with a smooth margin.  The cap is ornamented with very conspicuous, acutely conical or pyramidal warts up to 5 mm.

gills

The gills are white.

stem

The stem is 35 - 65 × 6 mm, whitish with a floccose covering below the ring disrupting into bands of tiny scales.  The basal bulb is immarginate and up to 10 mm wide.  The ring is distinct, cottony, and poorly developed.  No volval remnants are present.

spores

The spores measure 8.0 - 13.5 × 7.0 - 9.0 µm and are broadly ellipsoid to ellipsoid and amyloid.  Clamps are plentiful at bases of basidia.

discussion

This species was originally described from the state of Victoria, Australia.  No ecological information was provided.

Reid mentions possible confusion with Amanita farinacea (Cooke & Massee) Cleland & Cheel.  Amanita farinacea differs in the structure of its volva and its having shorter spores and was placed in Bas' stirps Grossa, a group comprising entirely Australian taxa.

Amanita pyramidifera does not fit precisely in any of the stirpes in the system of Bas (1969).  The greatest similarity is possibly to stirps Virginea (see A. virginea Massee); however, the spores of species in this group are smaller and rounder than those of A. pyramidifera.—R. E. Tulloss

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