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.
-formis, "similar to" or "like"; hence, "similar to Amanita cylindrispora"
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
Jenkins. 1979. Mycotaxon 10: 177.
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 not directly from the protolog of the present taxon and not cited as the work of another author is based on original research of R. E. Tulloss.
from protolog: 40 - 60 mm wide, white, convex, eventually plano-convex; context white, thin; margin nonstriate or faintly striate in age; universal veil absent.
from protolog: adnexed "with long decurrent ridge," medium distant, white, narrow, with denticulate edge; lamellulae not described.
from protolog: 70 - 150 × 7 - 10 mm, white, narrowing upward, glabrous; bulb not described; context not described; partial veil ample, white, fixed; universal veil limbate, white ca. 45 × 20 mm.
Odorless.Taste not recorded.
from extensive notes on the holotype deposited in L, with summary deposited with fragments of isotype in L, ca. xii.1968, signed by C. Bas and in the hand of Bas: [10/1/1] 10.7 - 12.9 (-15.4) × 4.0 - 5.1 (-6.0) μm, (Q = 2.0 - 2.95; Q = 2.50).
from type study of Jenkins (1979): [-/-/1] 10.9 - 13.3 × 3.9 - 4.7 μm, (Q = 2.49 - 3.21; Q' = 2.87), hyaline, thin-walled, amyloid, cylindric to bacilliform, often adaxially flattened; apiculus sublateral, truncate-conic; contents guttulate; color in deposit not recorded.
type study of RET [1991 notes only]: [38/1/1] (10.5-) 11.2 - 14.8 (-17.2) × 4.2 - 5.2 (-6.0) μm, (L = 12.8 μm; W = 4.7 μm; Q = (2.02-) 2.33 - 3.29 (-3.44); Q = 2.73), hyaline, colorless, smooth, thin-walled, amyloid, cylindric to bacilliform, infrequently elongate, ??; apiculus ??; contents granular to guttulate; ?? in deposit.
from protolog: In hammock or in deep sand or in sandy mixed woods.
from protolog: U.S.A.: FLORIDA—Clay Co. - Gold Head Branch St.Pk., 27.v.1939 W. A. Murrill 17677 (paratype, FLAS); S of Gold Head Branch St.Pk., 12.v.1939 Arnold & West s.n. [Murrill 18718] (paratype, FLAS); ca. Green Cove Springs, 27.vii.1939 W. A. Murrill 16301 (holotype, FLAS).
from type study of Jenkins (1979):
U. S. A.: FLORIDA— Clay Co. - ca. Green Cove Springs, 27.vii.1939 W. A. Murrill 16301 (holotype, FLAS).
type study of RET:
U. S. A.: FLORIDA— Clay Co. - ca. Green Cove Springs, 27.vii.1939 W. A. Murrill 16301 (holotype, FLAS; isotype fragments, L).
The present species has a type that is in poor condition. The spores from the type collection are similar to those of other taxa such as A. cylindrispora, A. peckiana and A. virosiformis; however, these three taxa are presently placed in three different sections of the genus. Apparently, spore shape and size are not going to give sufficient resolution in the case of the taxonomy of A. cylindrisporiformis.
Sporograph comparisons of the spore data from the type of the present taxon with A. cylindrispora (sect. Lepidella), A. peckiana (sect. Amidella), and A. virosiformis (sect. Phalloideae) follow.
We have not included Murrill's original spore measurements on this page. He was not a very good microscopist unfortunately and significantly understated the size of the spores of this taxon.
—R. E. Tulloss
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can be found here.
Spore data for collections provisionally identified as: Amanita cylindrisporiformis (Murrill) Murrill
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.