Amanita roseitincta : Rose-tinted Amanita

Technical description not yet available.

BRIEF DESCRIPTION

Amanita roseitincta is a distinctive and unusual species. In the button stage, a triplex volva is present. The underlayer is pinkish rusty and pulverulent. The outer layer forms warts (at arrow in drawing on right) on a submembranous base (seen peeling off below the unexpanded cap in the photo to the left). The color of the 30 – 70 mm wide pileus is off-white. All pigments rapidly fade in sunlight.

The gills are free to subdistant, crowded, and pale cream to white. The free gills are truncate.

The stipe is 25 – 150 x 5 – 20 mm and has a skirt-like annulus that is pink at first (at least on the lower side) and an ellipsoid to somewhat turnip-shaped bulb.

Jenkins (1986) reports the spores measure “8.2 -10.2 x 5.5 – 7.8 µm” and are broadly ellipsoid to ellipsoid and inamyloid. Clamps are absent from the bases of basidia.

This species occurs from New Jersey (infrequently) to the U. S. Gulf Coast region. It, and/or a similar species called A. guzmanii Cifuentes et al., occurs in Mexico.

Amanita roseitincta is associated with oak and pine. — R. E. Tulloss

Photo: R. E. Tulloss (Texas)

Drawing: member of Earle family (same date as holotype collection, Alabama) photographed by permission of the New York Botanical Garden.