| name |
Limacella sp-Pastorino-3-9-06-A-B |
| author |
Tulloss & Pastorino |
| name status |
cryptonomen temporarium |
| 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.
Macroscopic details are derived from the collector's notes and photographs and from microscopic study of the basidiomes. Microscopic data was developed by RET. |
| pileus |
28–39 mm wide, beige to beige-tan or light brown, becoming paler (to white) at margin, sometimes with scattered dark reddish brown spots, convex to campanulate, with broad umbo, smooth, appearing somewhat hygrophanous (watery); context whitish; margin incurved; gluten layer light beige. |
| lamellae |
narrowly adnate, close, whitish, with rough edge, rather broad, seemingly “swollen,” covered at first with light beige “film” of gluten (with such gluten separating from stipe before separating from pileus margin); lamellulae attenuate, occasional. |
| stipe |
70–75 × 7.5–14 mm, whitish to cream to beige, appearing “watery” like pileus, subcylindric; bulb not distinct in fresh material, small subglobose and quite distinct in exsiccata; context stuffed, partially hollow, ??, with some brownish stains near base; partial veil absent or cortinate evanescent and encased in gluten; gluten layer absent. |
| odor/taste |
not recorded. |
macrochemical
tests |
none recorded. |
| pileipellis |
absent. |
| pileus context |
with pale orange-yellow pigment in narrow region below bases of projecting (supportive) hyphae of universal veil; filamentous undifferentiated hyphae ?? µm wide, ??; acrophysalides ??; vascular hyphae 4.5 – 10.2 µm wide, sinuous, rather common near stipe apex; clamps common. |
| subhymenium |
apparently pseudoparenchymatous, possibly? only one cell layer thick, ??. |
| gluten layer |
On pileus: filamentous undifferentiated hyphae supporting gluten pile 3.0 – 14.5 µm wide, branching; terminal cells narrowly clavate to cylindric to subcylindric, with apex rounded, 62 – 74 × 6.8 – 11.5 µm, 5.5 – 10.0 µm wide at base, with length/max-width ratio = 6.3 – 9.1, arising only from elongate subcylindric to cylindric hyphal segments; clamps plentiful. On stipe: as irregular, frequently branching hyphae projecting from stipe surface; ??. |
| stipe context |
longitudinally acrophysalidic; filamentous undifferentiated hyphae 1.0 – 13.0 µm wide, occasionally branching, sometimes constricted at septa; acrophysalides 63 – 90 × 12.5 – 20 µm, apparently not common near surface; vascular hyphae ?? µm, ??; clamps common. |
| lamella edge tissue |
fertile. |
| basidiospores |
absent in material examined. |
| ecology |
In area of Quercus. |
| material examined |
U.S.A.: CALIFORNIA—Marin Co. - Alpine Lk., Golf Rd., ca. golf course, 9.iii.2006 R. Pastorino 3-9-06A&B (RET 418-8). |
| discussion |
The breadth of the terminal cells of the gluten layer on the pileus suggest placement in sect. Limacella. The absence of short, inflated cells below these terminal cells and the ephemeral partial veil eliminate the possibility of assignment to subsect. Amanitellae. Hence, the first guess for appropriate placement for the present species is in subsect. Limacella.
Unfortunately Pastorino 3-9-06A&B, is immature and bears no spores. The only indication of gluten on the stipe below the last point of contact with the pileus is the reported color of the stipe—roughly equivalent to that of gluten on the pileus and, at first, covering the developing lamellae.
In the present species, the widths of the terminal cells in the gluten layer exceed the reported widths of such cells in all sufficiently known taxa of Limacella. The consistently broadest such cells previously reported were from L. taiwanensis; and such cells may have inflated regions up to 10.0 µm wide in L. singaporeana.
Of sufficiently known North American taxa, L. kauffmanii and L. oblita have some macroscopic similarities to the present entity; however, these belong in sect. Lubricae. In sect. Limacella, the most similar taxa may be the (sometimes synonymized) European taxa: L. delicata and L. glioderma. Reportedly, these have largely dry or somewhat viscid stipes that are concolorous with the pileus. ??more??
I was sent a possible spore print for Pastorino 3-9-06A&B that proved to be a collection of hyphae probably represent the lower part of the cortinate partial veil of the present taxon, on a piece of acetate film of the sort used to make transparencies for overhead projection. Corresponding to the pileus edge in contact with the acetate were small fragments of fascicles of hyphae of the sort seen supporting the gluten of the universal veil. Moving "inward" toward the center of the "print," one next comes to single hyphae very well separated and each making a straight line as if drawn taut; these criss-cross in an apparently random manner. Closer yet to the center, there are patches of co-parallel hyphae over laid in a manner suggesting a woven fabric. All these hyphae were cylindric and included no intercalary inflated cells.
Irregular brownish yellow masses (possibly dried guttules of gluten) were noted on the immature lamella surfaces of Pastorino 3-9-06A&B. |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite