name | Amanita sangabrielensis | ||||||||||||
author | Tulloss & G. Wright | ||||||||||||
name status | nomen provisorum | ||||||||||||
GenBank nos. |
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intro |
The following text may make multiple use of each data field. A field may 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 is based on original research of R. E. Tulloss and field notes of Greg Wright. | ||||||||||||
pileus | 85 - 160 mm wide, white with a green tint ("somewhat like the lamellae of Russula delica" per G. Wright), plane to broadly convex, glabrous, not viscid; context white, thick; margin appendiculate with white material of both partial and universal veils; universal veil as numerous small and flat patches or as pyramidal warts, white, rather dense over disc, sparse over margin. | ||||||||||||
lamellae | narrowly adnate, close to subcrowded, greenish white to greenish buff, of medium breadth, with edges white and fimbriate; lamellulae truncate. | ||||||||||||
stipe | 110 - 120 × 21 - 24 mm, with green tint (concolorous with pileus), moderately appressed scaly in lower part; bulb ventricose; context white; partial veil superior, white, membranous, soon tattered; universal veil lacking. | ||||||||||||
odor/taste | Odor slightly rancid-musty when freshly cut. Taste "typical for section Lepidella" (per G. Wright), suggests hazelnuts. | ||||||||||||
macrochemical tests |
10% KOH soln. - negative on pileus surface and context, negative on lamellae. Wieland test - positive for amatoxins, but not as strongly positive as in A. ocreata. UV light - most of pileus, lamellae, and stipe and small regions (mostly near surfaces) of pileus and stipe contexts flourescing dull yellow. | ||||||||||||
pileipellis | ?? mm thick; suprapellis ?? mm thick, gelatinized; subpellis ?? mm thick; filamentous, undifferentiated hyphae ?? - ?? µm wide, subradially arranged, interwoven, branching, sometimes with somewhat expanded terminal cells; vascular hyphae present. | ||||||||||||
lamella trama | bilateral, divergent; central stratum ??; filamentous hyphae ??; inflated cells ??; vascular hyphae 2.8 - 7.0 µm wide, very tangled and dense in some regions. | ||||||||||||
subhymenium | uninflated hyphal segements in branching structure. | ||||||||||||
basidia | 57 - 71 × 8.0 - 11.2 µm, 4-, 2-, and 3-sterigmate, with sterigmata up to 8.0 µm long; clamps plentiful. | ||||||||||||
universal veil | On pileus: filamentous, undifferentiated hyphae 2.4 - 7.3 µm wide, branching, interwoven, abundant; inflated cells plentiful, irregularly disposed, not rehydrating well, subglobose to broadly ellipsoid (up to 53 × 50 µm) to elongate (up to 70 × 35 µm); vascular hyphae up to 5.9 µm wide. On stipe base: absent. | ||||||||||||
stipe context | longitudinally acrophysalidic; filamentous, undifferentiated hyphae 2.1 - 8.4 µm wide, branching, ??; acrophysalides up to 280 × 35 µm; vascular hyphae up to 16.1 µm wide, branching, common, mostly sublongitudinally arranged?. | ||||||||||||
lamella edge tissue | sterile. | ||||||||||||
basidiospores | [60/3/1] (9.1-) 9.8 - 13.3 (-16.1) × (4.5-) 4.9 - 7.0 (-8.4) µm, (L = 11.5 - 11.9 µm; L’ = 11.6 µm; W = 5.2 - 5.8 µm; W’ = 5.6 µm; Q = (1.66-) 1.78 - 2.48 (-2.56); Q = 2.01 - 2.21; Q’ = 2.10), hyaline, thin-walled, colorless, ??, amyloid to weakly amyloid, elongate to cylindric, occasionally expanded at one end, occasionally constricted; apiculus sublateral, ??; contents ??; ?? in deposit. | ||||||||||||
ecology | Subgregarious. At 1000 m elev. In Pinus plantation (short 2-needle, long 3-needle). | ||||||||||||
material examined |
U.S.A.: CALIFORNIA—Los
Angeles Co. - | ||||||||||||
discussion |
This species may have yellowish and greenish tints on
all parts of the basidiome. An initial nrLSU sequence has been obtained that is substantially (ca. 5%) distant from existing GenBank that are most similar according to BLAST (14.xii.2019). This species has formerly been known as "Amanita sp-C03" or "sp. C3" in my notes and keys and on this site. | ||||||||||||
citations | —R. E. Tulloss | ||||||||||||
editors | RET | ||||||||||||
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