name |
Amanita sp-CR13 |
author |
Tulloss & Halling |
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.
The following material is based upon original research by R. E. Tulloss. |
pileus |
95 mm wide, brown to sepiaceous brown over disc, paler progressively toward margin, unchanging when cut or bruised, planoconvex, subviscid when wet, dull when dry; context off-white, unchanging when cut or bruised, 8 mm thick over stipe, thinning evenly to within 3± mm of margin, then membranous to margin; margin striate (0.3R, but appearing shorter because outermost 3± mm of pileus vertically oriented and innermost ends of striae faint), nonappendiculate, strongly decurved; universal veil absent; pileipellis seeming nearly 1 mm thick in cross-section. |
lamellae |
narrowly adnate, with decurrent line descending (up to 40 mm) to upper surface of partial veil, subdistant to close, cream in mass, pale cream in side view, unchanging when cut or bruised, 8 - 8.5 mm broad, sometimes anastomosing, with forking and reverse forking common; lamellulae truncate to subtruncate, of diverse lengths, plentiful, unevenly distributed. |
stipe |
152 × 14.5 mm, with off-white to pale cream ground color, unchanging when cut or bruised, subcylindric or slightly narrowing upward, not flaring at apex, pulverulent to finely fibrillose both above and below partial veil, finely longitudinally striate in lower half; context white above, pale orangish white below, unchanging when cut or bruised, stuffed moderately densely with white cottony material (with fibrils often longitudinally oriented), with central cylinder 5.5 mm wide; partial veil superior, membranous, thin, concolorous with stipe, strongly striate above, smooth below, becoming lacerate and collapsing on stipe; universal veil as saccate volva, membranous, white on exterior surface, pale orangish white to pale buff on interior surface, with uneven limbs (e.g., 30 mm high on one side of stipe and 70 mm on other), 1.5 - 2.5 mm thick at midpoint between tip of limb and attachment to stipe base, apparently without limbus internus, adnate to base of stipe for short distance. |
odor/taste |
Odor faint. Tasteless. |
macrochemical tests |
none recorded |
ecology |
Solitary, at 1900 m elev. In dark loam of mixed broad leaf forest including Quercus seemannii. |
material examined |
COSTA RICA: ALAJUELA—Ctn. Grecia - Grecia, Bosque del Niño [10°9’4” N/ 84°14’42” W], 15.vi.1995 J. L. Mata 609 (RET 155-6; USJ). |
citations |
—R. E. Tulloss |
editors |
RET |
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