name | Amanita hallingiana | ||||||||||||||||||||||||||||
author | Tulloss, Geml & G. M. Muell. | ||||||||||||||||||||||||||||
name status | nomen provisorum | ||||||||||||||||||||||||||||
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 material is based on original research by R. E. Tulloss. | ||||||||||||||||||||||||||||
pileus | 30 - 100 mm wide, dark brown (6E6-8 to 6F8) at first, sometimes paler toward margin, becoming yellowish brown to brownish yellow to oxide yellow to golden brown to honey yellow mustard-brown (5C-E6-8), then fading to about 6D7 then to buff (about 5A3), usually with disc darker and palest near margin, ovoid at first, then strongly convex to convex, finally planar, viscid when wet; context white to cream to very pale yellow, 2 - 10 mm thick over stipe; margin nonstriate at first, short striate in age, nonappendiculate; universal veil as large or small white to pale gray flattened patches, detersile. | ||||||||||||||||||||||||||||
lamellae | free, close to crowded, white, unchanging, narrow, thin, 4± mm broad, entire; lamellulae truncate to subtruncate, common, of diverse lengths, unevenly distributed. | ||||||||||||||||||||||||||||
stipe |
80 - 170 × 5 - 15 mm [length includes bulb],
cylindric or slightly narrowing upward, white,
subglabrous to subfibrous to squamulose below
partial veil, silky subfibrillose above, sometimes
staining pale pinkish brown from handling;
bulb subglobose to
rather narrowly ellipsoid, occasionally vertically
or horizontally flattened, up to 35 mm wide;
context
white, solid at first, becoming hollow, sometimes
pale yellow near surface;
partial veil subapical to submedian,
membranous, rather thin, not large, white,
infundibuliform, may descend stipe with
age, sometimes glutinous on upper side of free
edge; universal veil circumsessile, as
an upstanding ocreate to cupulate volva, white, with
limb rather short (up to 4 mm high) thick (up to 10
mm at base) and membranous, sometimes verically
split, sometimes with "circumerential subquamulose
zones," persistent. [Note: At least one collector reported a Costa Rican collection with a partial veil that appeared to be "double."—ed.] | ||||||||||||||||||||||||||||
odor/taste | Odor mild or raphanoid or not distinctive at first, later slightly of chlorine. Taste not recorded. | ||||||||||||||||||||||||||||
macrochemical tests |
None recorded. | ||||||||||||||||||||||||||||
subhymenium | wst-near = 20 - 30 µm; wst-far = 30 - 35 µm; branching structure with many elements inflated or partially inflated and some uninflated short hyphal segments, with basidia arising from elements of all types. | ||||||||||||||||||||||||||||
basidia | 44 - 54 × 9.1 - 11.9 µm, 4-sterigmate, with sterigmata up to ?? × ?? µm; clamps not observed. | ||||||||||||||||||||||||||||
lamella edge tissue | sterile. | ||||||||||||||||||||||||||||
basidiospores | [60/2/2] (8.3-) 8.7 - 10.5 (-11.5) × (6.0-) 6.5 - 8.0 (-8.6) µm, (L = 9.5 - 9.6 µm; L’ = 9.5 µm; W = 7.1 - 7.2 µm; W’ = 7.1 µm; Q = (1.06-) 1.25 - 1.46 (-1.54); Q = 1.32 - 1.35; Q’ = 1.34), hyaline, colorless, thin-walled, smooth, inamyloid, broadly ellipsoid to ellipsoid, rarely subglobose, often adaxially flattened; apiculus sublateral, cylindric; contents monoguttulate; white?? in deposit. | ||||||||||||||||||||||||||||
ecology | Solitary to gregarious. Costa Rica: 2740-2800 m elev. With Quercus copeyensis and Q. seemanii. Honduras: At 1800 m elev. Under Quercus or in Quercus-dominated forest including some Pinus. Mexico: At 2640 m elev. In Quercus forest. | ||||||||||||||||||||||||||||
material examined |
COSTA RICA:
SAN JOSÉ—Ctn. Dota - Copey de Dota,
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discussion |
The specimens of Mueller 4116 are all were dried prior to the start of sporulation. The stipe of Mueller 4179 was decaying when it was collected (although there are no signs of senescence in the hymenium); hence, the spore dimensions and the values of Q reported above may be abnormally low. | ||||||||||||||||||||||||||||
citations | —R. E. Tulloss | ||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||
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