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Amanita parcivolvata (Peck) E.-J. Gilbert
"Ringless False Fly Agaric"

Amanita parcivolvata - Oconee County, South Carolina, U.S.A.
Amanita parcivolvata - H. C. Beardslee ca. 1904 Amanita parcivolvata - H. C. Beardslee ca. 1904

Technical description (t.b.d.)

BRIEF DESCRIPTION: Amanita parcivolvata is a very common species of the southeastern U.S.A., occurring at least as far north as the Atlantic coastal plain in northeastern New Jersey.

Its 30 - 70 mm wide cap is scarlet and has a strongly striate margin. The volva is distributed over the cap as powdery, yellow to pale yellow warts.

The free gills are yellow in mass and white in side view. The short gills are truncate.

The stipe is 20 - 43 x 10 - 13 mm, has no annulus and is covered with yellow, powdery remains of the volva. There is a 20 - 15 x 15 - 20 mm bulb at the stipe base.

The spores measure (8.4-) 9.1 - 11.5 (-12.6) x (5.6-) 6.3 - 7.9 (-8.0) µm and are broadly ellipsoid to ellipsoid to elongate and inamyloid. Clamps are rare at bases of basidia.

The species is associated primarily with oaks and pines.

It bears some similarities to bright-colored, ringless species of Amanita sect. Amanita such as A. xanthocephala (Berk.) D. A. Reid & Hilton and A. aurantiovelata Schalkwijk & G. M. Jansen. -- R. E. Tulloss

Photos: R. E. Tulloss (top row, South Carolina)
Photos: Henry C. Beardslee (bottom row, ca. 1904, probably North Carolina; courtesy of Dr. C. Bas, Leiden)

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Last changed 20 October 2009.
This page is maintained by R. E. Tulloss.
Copyright 2000, 2002, 2003, 2004, 2005, 2008, 2009 by Rodham E. Tulloss.
Photographs copyright 2000, 2002 by Rodham E. Tulloss.