=Amanita baccata sensu Bres. in Beardslee. 1902. J. Elisha Mitchell Scient. Soc. 12: 2, pl. 1.
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.
from type study of Jenkins (1978a): [-/-/1] 12.5 - 14.8 × 4.9 - 5.9 μm, (Q = 2.27 - 3.02; Q' = 2.60), hyaline, smooth, thin-walled, amyloid, cylindric to bacilliform; apiculus sublateral, cylindric; contents guttulate; color in deposit not recorded.
from type study by RET: [40/2/1] (10.5-) 10.6 - 16.1 (-16.4) × (4.6-) 4.7 - 6.8 (-8.2) μm, (L = 12.7 - 13.7 μm; L' = 13.2 μm; W = 5.4 - 5.7 μm; W' = 5.5 μm; Q = (1.54-) 1.92 - 3.19 (-3.50); Q = 2.38 - 2.48; Q' = 2.43), smooth, amyloid, cylindric to bacilliform, occasionally elongate, infrequently ellipsoid; apiculus sublateral; contents not recorded; color in deposit not recorded.
Solitary to scattered to subgregarious. Oklahoma: Under Quercus stellata and Q. marilandica.
from type study of Jenkins (1978a):
U. S. A.: MICHIGAN— Allegan Co. - New Richmond,
1912 C. H. Kauffman s.n. (holotype, NYS).
Co. - New Richmond,
1912 C. H. Kauffman s.n.
NEW YORK—Suffolk Co. (Long Isl.) -
Rocky Point Conservation Area, 25.ix.2000 Joel L.
Horman 2 (RET 320-3, nrLSU seq'd.).
OKLAHOMA—Oklahoma Co. - Edmond,
Hafer Pk., 10.ix.2008 C. L. Ovrebo 4764 (CSU).
RET's old view that the subhymenium of this species was not composed of inflated cells must be attributed to his misinterpretation of the collapsed tissues of the holotype, which he reviewed when he was inexperienced. Modern collections of the species show he was in error.
RET's provisional name "A. canadensis" should be referred here because his idea that he was viewing a specimen distinct from A. peckiana was based in part on the above mentioned mistake.
An edited version of RET's type study should be placed on this page and supplemented by recently collected data.
—R. E. Tulloss
Information to support the viewer in reading the content of "technical" tabs
can be found here.
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.