| name |
Amanita alligator |
| author |
Tulloss |
| name status |
nomen provisorum |
| english name |
"Ristich's Alligator-stem Ringless Amanita." |
| etymology |
alligator - genus name of a large carnivorous
reptile, known from two living species—one in
North America and one in China. [Note: The original
collector of the present species, the late Dr. Samuel
S. Ristich, consistently used the informal English
phrase "alligator stipe" to describe this species
in correspondence with RET.] |
| GenBank nos. |
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.
|
| intro |
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 text is derived from original research of R. E. Tulloss. |
| pileus |
120 mm wide, brownish gray, virgate, subumbonate; context ??; margin striate (0.25R), nonappendiculate; universal veil absent. |
| lamellae |
??, off-white, drying pale yellowish tan, rather narrow, ??; lamellulae ??. |
| stipe |
222 × ?? mm, white, upper two thirds to one half (upper 115 mm) covered with brown to rather dark gray fibrils, at times breaking up into chevron-like pattern; context white; exannulate; universal veil as a saccate volval, white, large, copious, thick, 93 mm from base of stipe to highest point of limb. |
| odor/taste |
not recorded. |
macrochemical
tests |
none recorded. |
| basidiospores |
[10/1/1] 10.8 - 14.0 (-17.2) × (6.0-) 8.5 - 11.0 µm,
(L = 12.7 µm; W = 9.6 µm; Q = 1.08 -
1.40 (-2.13); Q = 1.36),
??, subglobose to broadly
ellipsoid to ellipsoid, rarely cylindric, adaxially
flattened, often expanded slightly at apex;
apiculus sublateral to lateral, cylindrical;
contents guttulate;
?? in deposit. |
| ecology |
Maine: Solitary. In Picea forest. |
| material examined |
U.S.A.:
MAINE—Cumberland Co. -
"Rte. 9 spruce forest," N. Yarmouth, 2.viii.1993 Dr.
Samuel S. Ristich s.n. [Tulloss 8-2-93-SSR1]
(RET 096-4), ix.1994 S. S. Ristich
s.n. (RET 130-5). |
| discussion |
This species was originally called "species N22" and,
later, on the present site, "A.
sp-N22."
As we begin to sample collections referred to the
name "A. umbrinolutea" by Dr. Ristich, we find
that more than one taxon is involved and that the
taxa appear to differ both morphologically and
genetically. For example, see
A. sp-N63, which
appears to share an nrITS sequences with the present
species, can be diffrentiated by nrLSU.
RET is concerned that the images associated with
the two collections cited in the "materials
examined" data field may not be contaxic.
Hence, further work is needed. |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite