non Amanita rhodophylla Imaz. & S. Toki nom. illeg.
description is based on Beeli (1935).
The cap of Amanita rhodophylla is 80 mm wide, yellowish-white, becoming satiny in drying, broadly campanulate-convex, smooth, with a lightly striate margin. The volva is absent. The flesh is white and firm.
Gills are free, pink, rounded at the stem end, and 5 mm broad.
Its stem is 120 × 7 - 11 mm, solid, white, markedly narrowing upward, fibrillose, and smooth, with a bulbous base. The stem is easily detachable from the cap. The ring is thin, membranous, white, skirt-like, and becomes satiny on drying.
The species is odorless. The taste is acrid.
Beeli (whose spore measurements often appear to be incorrect) reported that the spores measured 4 - 6 µm in diameter and are globose and inamyloid. Gilbert (1940) illustrates only a single spore in the proper position to be measured; it is 8.3 × 7.4 µm which is subglobose.
The present species was originally described from the Democratic Republic of Congo and said to be rather abundant in forests.
Since the stipe is not totally elongating, this species belongs in Amanita sect. Amanita. The watercolor of Madame Goossens clearly shows a large bulb on the base of the stipe and the volva is limbate rather than saccate. Indeed the specimen suggests A. virosa Lam. as Gilbert (1941) observes. Other species known to have both bulbs, membranous limbs, and inamyloid spores fall in Amanita series Pudicae (from Africa) and Amanita series Umbrinellae (from South America and Australia). Some of the South American species are associated with trees from the Caesalpinaceae in tropical forests. Others are known from the southern cone of South America associated with Southern Beech (Nothofagus). The Australian species are known to be associated at least with eucalypts. It is interesting to speculate that these taxa probably of Gondwanan origin may be relictual descendents of ancestors in section Amanita and basal to section Caesarea) as we know the sections today.—R. E. Tulloss
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.
Due to delays in data processing at GenBank, some accession numbers may lead to dead pages.
These pages will eventually be made live, so try again later.
The following text may make multiple use of each data field.
The field may contain magenta text presenting data from a type study
and/or revision of other original material cited in the protolog of the present taxon.
Macroscopic descriptions in magenta are a combination of data from the protolog and
additional observations made on the exiccata during revision of the cited original
The same field may also contain black text, which is data from a revision of the present
taxon (including non-type material and/or material not cited in the protolog).
Paragraphs of black text will be labeled if further subdivision of
this text is appropriate.
Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain.
The following material is derived from the protolog of the present taxon and from (Gilbert 1940 & 1941).
from protolog: 80 mm wide, yellowish white, campanulate to convex to plano-convex, glabrous; context white, fleshy, firm; margin lightly striate;universal veil not described.
from protolog: free, density not described, pink-tinted, 5 mm broad, rounded on end nearest stipe; lamellulae not described.
from protolog: Odor acrid, bitter. Taste not described.
lamella edge tissue
from protolog: 4 μm wide, hyaline, smooth, globose. [Note: Beeli's spore measurements often are contradicted by more recent data. We often turn to the spore illustrations of Gilbert (1940) to get a more accurate idea of spore shape and size. No sporograph can be generated.]
Gilbert (1940): [1/1/1] 8.3 × 7.5 μm, (Q = 1.11). [Note: Only one spore in Gilbert's illustration is in lateral view. No sporograph can be generated.]
from protolog: Rather abundant. On soil in forest.
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.