| name | Limacella roseicremea |
| name status | nomen acceptum |
| author | Murrill |
| english name | "Rosy Vanguard Limacella" |
| synonyms |
≡Lepiota roseicremea (Murrill) Murrill |
| intro | The following is based on Murrill's notes found with the type collection, Murrill's original description, the description of H. V. Smith (1945 ), and a study of type by RET. |
| cap | The cap of L. roseicremea is 25–60 mm wide, cream tinted with rose, convex to plane, expanding slowly, smooth, glabrous, and viscid. It has a low broad umbo. Its flesh is white, and its margin is nonstriate and curved inward. A gluten layer is present. |
| gills | The gills are free, rather close, and white. Short gills were not described for this mushroom. |
| stem | The apparently bulbless stem is 50–100 × 12.5 mm, white, approximately cylindric, sometimes enlarged at the base, smooth, and viscid, The stem is also fleshy and solid. There is a membranous ring on the upper stem; this ring is ample and membranous and remains stretched from the cap margin to the stem for some time. A gluten layer is present on the stem as a sheath. |
| odor/taste | The odor of this mushroom is described as like flour or meal (farinaceous). The taste was not recorded. |
| spores | The spores of this species measure [-/-/] 4.5 – 6.2 × 3.5 - 4.5 µm, (est. Q = 1.25 - 1.45; est. Q' = 1.35), and are broadly ellipsoid to ellipsoid and inamyloid. Clamps are common at the bases of basidia. |
| discussion |
The present species is known from the adjacent 48 states of the U.S. and may occur in southwestern Canada. Considering that it may have been mistakenly classified as L. guttata in North America, material under that name in Canadian and U.S. herbaria should be revised to check the determinations. The reader should see L. sp-Burnett-5-xi-1994, which is possibly assignable to the present species.—R. E. Tulloss |
| brief editors | RET |
| name | Limacella roseicremea |
| author | Murrill. 1912a. Mycologia 4: 212. |
| name status | nomen acceptum |
| english name | "Rosy Vanguard Limacella" |
| synonyms |
≡Lepiota roseicremea (Murrill) Murrill.
1912a.
Mycologia 4: 217. 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. |
| MycoBank nos. | 178969, 212500 |
| 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. |
| holotypes | NY (destroyed by insects, only annotations remaining) |
| lectotypes | NY |
| lectotypifications | proposed herein. |
| intro |
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 material. 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 researcher is based upon original research by R. E. Tulloss. |
| pileus | protolog: 25–60 mm wide, cream tinted with rose, broad, convex to plane, expanding slowly, smooth, glabrous, viscid, with low broad umbo; context white; margin nonstriate, inflexed; gluten layer present. |
| lamellae | protolog: free, rather close, white, arcuate; lamellulae not described. |
| stipe | protolog: 50–100 × 12.5 mm, white, approximately cylindric, sometimes enlarged at base, smooth, viscid; bulb absent; context fleshy, solid; partial veil superior, ample, membranous, remaining stretched from pileus margin to stipe for some time; gluten layer ??. |
| odor/taste | protolog: Odor farinaceous. Taste not recorded. |
| macrochemical tests |
none recorded. |
| pileipellis | study of type: absent. |
| basidia | study of L. roseicremea paratypes: 13.5 – 24 × 4.0 – 6.1 µm, 4-sterigmate, with sterigmata up to 5.5 × 1.5 µm; clamps common, prominent. |
| gluten layer | study of paratypes: On pileus: Not clear if gluten observed ["not distinctly gelatinous" (Smith 1945: 138) could reference hyphae themselves]; terminal cells of supporting hyphae strongly differentiated from those of A. solidipes (i.e., considerably shorter, broader at base, narrowing upward), e.g., conic 29 – 38 × 8.5 – 10.5 µm, with basal septa 8.5–10.5 µm, with length/max.-width ratio = 2.9 – 4.5 µm; subterminal cells sometimes subglobose to nearly globose and occasionally with such cells in chains, ?? × 20 µm; clamps common, prominent. On stipe: ??. |
| lamella edge tissue | study of paratypes: fertile??. |
| basidiospores |
study of paratypes (RET): [8/1/1]
4.5 – 6.2 × 3.5 – 4.5 µm, (L = 4.8 µm;
L’ = 4.8 µm; W = 3.7 µm; W’ = 3.7
µm; Q = (1.21–) 1.22 – 1.43; Q = 1.30;
Q’ = 1.30), hyaline, colorless, thin-walled,
smooth to very minutely punctate, inamyloid, broadly
ellipsoid to ellipsoid, adaxially flattened;
apiculus sublateral, cylindric; contents
granular to monoguttulate; white in deposit.
RET from proposed epitype: [60/3/1] (4.1–) 4.3–6.0 (–7.2) × (3.2–) 3.4–4.6 (–5.5) µm, (L = 5.0–5.2 µm; L’ = 5.2 µm; W = 3.9–4.2 µm; W’ = 4.0 µm; Q = (1.06–) 1.09–1.53 (–1.94); Q = 1.26–132; Q’ = 1.30), hyaline, colorless, smooth, dominantly inamyloid, occasionally dextrinoid, broadly ellipsoid to ellipsoid, infrequently subglobose, rarely elongate, adaxially flattened; apiculus sublateral, cylindric; content granular to mono- to multiguttulate; color in deposit not recorded. |
| ecology | protolog: Washington: Mostly in virgin forests of Pseudotsuga, Thuja, Abies, Tsuga, Acer, Alnus, etc. |
| material examined |
protolog & RET from paratypes:
U.S.A.:
WASHINGTON—King Co. -
Seattle, 20.x.1911–1.xi.1922 W. A. Murrill 534
(paratype, NY 27713), 574 (holotype, NY 27712,
destroyed by insects, only annotations remaining),
585 (paratype & proposed lectotype,
NY 27714). RET from proposed epitype: U.S.A.: WASHINGTON—Whatcom Co. - Lummi Isl., 5.xi.1994 Nancy Burnett s.n. (RET 136-9, nrITS & nrLSU seq'd.). |
| discussion |
Considering (a) the well-formed and persistent
partial veil, (b) the subconic terminal cells of
the gluten-supporting hyphae of the gluten layer on
the pileus, and (c) the presence of inflated cells
subjacent to these terminal cells, the present
taxon should be assigned to
Limacellopsis. H. V. Smith (1945) knew this species only from the type; however, it is quite possible that at least some North American reports of A. guttata may refer to the present species. Smith cited L. guttata (known to her as L. lenticularis) from southern Michigan and reported L. lenticularis var. fischeri from Ontario, Canada, and from the U.S. states of Michigan and Pennsylvania. The holotype of L. roseicremea was destroyed by insects. The known syntypes which remain are the two prototypes (NY). A note found with one of the collections states that Zeller was collecting with Murrill when the material of L. roseicremea was found and took three [possibly] contaxic collections back to his laboratory. There is no indication (found to date), however, that Murrill examined these collections in defining L. roseicremea. NY 27713 has few spores on its badly damaged lamellae, which seem to have insect damage densely distributed over most of the hymenium surface that I examined; however very little of this specimen remains; and some parts of the single basidiome may be missing entirely. For these reasons, I relied on only one mount of lamellae, finding only 8 spores in several hours of searching; and did not consume more of the material. NY 27714 is immature with the substantial partial veil still in place; however, there are spores on the hymenium in regions near the stipe. All parts of the basidiome are represented notwithstanding the immaturity. Therefore, I propose to designate NY 27714 as lectotype of L. roseicremea. |
| citations | —R. E. Tulloss |
| editors | RET |
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| name | Limacella roseicremea |
| bottom links | [ Keys & Checklists ] |
| name | Limacella roseicremea |
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Spore data sets and their composite
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