This species is known only from its original description which includes the plate illustrated on this page.
The cap is less than 54 mm wide, less than 13.5 mm high, bright yellowish red, regularly convex, with a nonstriate margin.
The gills are pale yellow, regular, and equal. Short gills not reported.
The stem is 54 × 9 mm and sordid white. The
bulb is 16 mm wide. The ring is median, white, membranous, and skirt-like. The limbate volva is membranous, white, and enclosing the lower part of the stem above the bulb. The flesh is not described in the original description.
Nothing is known of the odor or taste of this mushroom.
There is no information on the spores of this mushroom.
So far as we know no collection of this
species exists. The original description is based on a watercolor by Gay. The absence of a striate margin is specifically noted by the author. That and the bulbous stipe and the limbate, rather than saccate, volva eliminate the possibility of placement in section Vaginatae which the original author also observes. The strongest case for sectional placement is in section Phalloideae and A. gayana does bare some similarity to the recently described species A. aurantiobrunnea Simmons et al. (2002) from Guyana. The latter differs at least by having white gills, the presence of short gills, a weakly structured ring at the top of the stem, and an orange tint on the outside of the volval limb.
Gay's records indicate this species named for him was not eaten in the area of Chile where it was originally
collected.—R. E. Tulloss and E. Horak
(Mont.) Mont. in Gay. 1854. Atlas, Cript.: pl. 7, fig. 9.
"Gay's Death Cap"
≡Agaricus Amanita gayanus Mont. in C. Gay. 1850-53. Hist. Fis. Polit. Chile, Bot. (Fl. Chilena) 7: 332.
The editors of this site owe a great debt to Dr. Cornelis Bas
whose famous cigar box files of Amanita nomenclatural information
gathered over three or more decades were made available to RET for computerization
and make up the lion's share of the nomenclatural information presented on this site.