name | Amanita homolae | ||||||||||||||||||||||||||||||||||||||||||||
author | Tulloss nom. prov. | ||||||||||||||||||||||||||||||||||||||||||||
name status | nomen provisorum | ||||||||||||||||||||||||||||||||||||||||||||
etymology | genitive of a Latinized name; hence "Homola's" or "of Homola" | ||||||||||||||||||||||||||||||||||||||||||||
GenBank nos. |
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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 based on original research of R. E. Tulloss. | ||||||||||||||||||||||||||||||||||||||||||||
pileus | 52 - 78 mm wide, cream or very pale pinkish- or orangish-white, or off-white becoming sordid yellowish cream or pallid grayish brown in age, broadly campanulate with deflexed margin, becoming planoconvex, tacky, dull; context white, whiter than lamellae, unchanging when cut or bruised, 4.5 - 6.5 mm thick at stipe, thinning evenly for one half to two thirds of radius, then membranous to margin; margin striate (0.35R - 0.6R), nonappendiculate; universal veil absent. | ||||||||||||||||||||||||||||||||||||||||||||
lamellae | free to narrowly adnate with a decurrent tooth (lens) or a line on the stipe apex (lens), subcrowded to crowded, pale pinkish- or orangish-cream in mass, ?? in side view, drying a lovely pale orange (as does, on occasion, the underside and striae of the pileus), 6.5 - ?? mm broad; lamellulae truncate, of varying length, unevenly distributed. | ||||||||||||||||||||||||||||||||||||||||||||
stipe | 140 - 220 × 12-13.5 mm, entirely whitish or cream with orange tint in upper half and dingy gray above the saccate volva, browning on edge of wounds and from handling; context white to off-white and somewhat water logged, unchanging when cut or bruised, larva tunnels concolorous, hollow or partially stuffed with white cottony material, with central cylinder 3.5 - 6.5 mm wide; exannulate; universal veil as saccate volva, white, occasionally with some brown stains on exterior surface, membranous, leathery, free from stipe for considerably more than half distance from stipe base to highest point on limb, about 1 mm thick at midpoint between highest point of limb and point of attachment to stipe, with highest point on limb 49 - 51 mm from base of stipe; limbus internus as a very small ridge just above point of attachment to stipe. | ||||||||||||||||||||||||||||||||||||||||||||
odor/taste | Odorless. Taste not recorded. | ||||||||||||||||||||||||||||||||||||||||||||
macrochemical tests |
none recorded. | ||||||||||||||||||||||||||||||||||||||||||||
basidiospores | [20/1/1] 9.2 - 11.0 × (8.2-) 8.5 - 9.5 µm, (L = 10.1 µm; W = 9.0 µm; Q = (1.02-) 1.06 - 1.20 (-1.22); Q = 1.12), smooth, thin-walled, ??, inamyloid, globose to subglobose to broadly ellipsoid, adaxially flattened; apiculus sublateral, proportionately small, cylindric; contents ??; white in deposit. | ||||||||||||||||||||||||||||||||||||||||||||
ecology | Solitary to subgregarious. Maine: In loam. | ||||||||||||||||||||||||||||||||||||||||||||
material examined |
U.S.A.: MAINE—Cumberland
Co. - Standish, off Rte. 114, 27.vii.1998 Samuel S.
Ristich s.n. (RET 288-3, nrITS & nrLSU
seq'd.).
Kennebec Co. - Hallowell, Jamies Pond Wildlife Mgmt. Area,
9.viii.2014 Clement Ockay s.n. [Tulloss 8-9-14-J]
(RET 628-7, nrITS & nrLSU seq'd.).
Penobscot Co. - Orono, Univ. of Maine, 10.viii.1991
participant NEMF1991 s.n. [Tulloss 8-10-91-B]
(RET 031-3, nrITS seq'd.); Greenfield, Passadumkeag
Mtn., 11.viii.1991 participant NEMF1991 s.n.
[Tulloss 8-11-91-F] (RET 029-8, nrITS seq'd.).
MASSACHUSETTS—Unkn. Co. - unkn. loc.
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discussion |
Amanita homolae is a very distinctive species with
its cream-colored cap tinted with pink or orange and a
stipe often decorated with pale orange
pulverulence. Genetic studies indicate that the number of white- to cream-capped species with a relatively persistent, saccate universal veil in Amanita section Vaginatae in northeastern North America are far more numerous than has been previously suspected. Due to recent efforts of members of the Quebec and Montreal mycological societies, the laboratory of Dr. Jean-Marc Moncalvo, and the authors of this page, the following white or pallid taxa (in additions to the present species) have been genetically segregated: A. albiceps, ??. At present, an additional 4?? probable taxa (including A. sp-NFL02) have been identified based on RET's herbarium collections which had been tentatively identified under one of the names listed above. Genetic work is being scheduled to compare this taxon with A. sp-NFL02 and A. littenii. | ||||||||||||||||||||||||||||||||||||||||||||
citations | —R. E. Tulloss and L. V. Kudzma | ||||||||||||||||||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||||||||||||||||||
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name | Amanita homolae |
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name | Amanita homolae |
bottom links | [ Keys & Checklists ] |
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.