Amanita sp-N35

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name	Amanita sp-N35
name status	cryptonomen temporarium
author	Tulloss
cap	The cap of Amanita sp-N35 is 91 - 124 mm wide; it is pale cream and ovoid at first and, in age, becomes olive-cream with a brown disc and broadly campanulate with a broad umbo. The cap is viscid when wet and otherwise tacky and dull. The flesh is white. The margin is striate. No remains of the volva are usually found on the cap.
gills	The gills are free, crowded, and white both in mass and in side view. They dry an orangish pink. Short gills of this species are truncate, of diverse lengths, plentiful, and unevenly distributed.
stem	The stem of this species is 118 - 188 × 14 - 17 mm, has a white to pallid ground color with some regions pale orange fading to pale ocher, and rapidly becomes gray from handling and becomes gray from the base upward in age. The surface is pulverulent to punctate in the upper third and fibrillose below. The stipe decoration is at first the same color as the base/ground color. The fibrils eventually turn gray to black. The stem's flesh is very firm, white, unchanging when cut or bruised, and hollow. The saccate volva is white, smooth, soft, and membranous. The 40 - 50 × 24 - 28 mm sack. The volva's internal limb is placed quite low on the inner surface of the sack and small or merely shelf-like.
odor/taste	there is no detectable odor.
spores	The spores measure (8.5-) 9.5 - 11.8 × (8.2-) 8.5 - 10.2 (-10.5) µm and are globose to subglobose to broadly ellipsoid and inamyloid. Clamps are probably absent from bases of basidia.
discussion	This provisional species is known only from Middlesex Co., Connecticut, where it was found in a small group in the fine loam of a mixed hardwoods forest that included Oak.—R. E. Tulloss
brief editors	RET

name

Amanita sp-N35

author

Tulloss

name status

cryptonomen temporarium

GenBank nos.

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accession	locus	voucher	source

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 text is based on original research of R. E. Tulloss.

pileus

91 - 124 mm wide, pale cream, becoming olive-cream with brown disc in age, ovoid at first, then campanulate, finally broadly campanulate with broad umbo, viscid when wet, tacky and dull; context white with waterly lines below pileipellis and above lamellae, 5 - 7.5 mm thick at stipe, thinning evenly for two-thirds to three-fourths of radius, then a membrane to margin; margin striate (R), nonappendiculate; universal veil absent.

lamellae

free, with decurrent line on stipe, crowded, white in mass and in side view, unchanging with age or when cut or bruised, drying orangish pink, 5.5 - 9.5 mm broad; lamellulae truncate, of diverse lengths, plentiful, unevenly distributed.

stipe

118 - 188 × 14 - 17 mm, white to pallid ground color with some regions pale orange fading to pale ocher, rapidly gray from handling and becoming gray from base up in age, drying sordid, narrowing upward, very slightly flaring at apex, pulverulent to punctate (concolorous) in upper third, fibrillose below (at first fibrils concolorous, then gray to black); context very firm, white, unchanging when cut or bruised, hollow, with white pithy cross walls and with white cottony fibrils sometimes also forming crosswalls, with central cylinder 5 - 7 mm wide, with larva tunnels concolorous; exannulate; universal veil as saccate volva, white, smooth, soft, membranous, becoming easily separable from stipe with age, about 1 mm thick halfway between attachment and tip of limb, 40 - 50 × 24 - 28 mm, with limbus internus placed quite low on interior of limb and small or merely shelf-like.

odor/taste

Odor none. Taste not recorded.

macrochemical
tests

Spot test for laccase: positive in stipe stuffing in young and intermediate age specimens; positive in very bottom of volval sac in young specimen and in limb (only) of volval sac in specimen of intermediate age; completely negative in specimens with pigmented pileus. Spot test for tyrosinase (paracresol): positive throughout except in spots on faces of lamellae in specimens of all ages and in spots in pileus context in specimen of intermediate age.

basidiospores

send to graphing tool

[20/1/1] (8.5-) 9.5 - 11.8 × (8.2-) 8.5 - 10.2 (-10.5) µm, (L = 10.6 µm; W = 9.6 µm; Q = 1.04 - 1.20; Q = 1.10), hyaline, thin-walled, smooth, ??, globose to subglobose to broadly ellipsoid, often adaxially flattened, sometimes expanded at one end; apiculus sublateral, cylindric to slendery truncate-conic; contents granular or monoguttulate with or without small additional granules; ? in deposit.

ecology

Subgregarious. In fine loam under mixed hardwoods including Quercus.

material examined

U.S.A.: CONNECTICUT—Middlesex Co. - Middleton Twp., Connecticut For. & Parks Assoc., 25.vii.1992 Arlene Rainis Bessette s.n. [Tulloss 7-25-92-F] (RET 064-6).

discussion

Could this be Amanita violettae? Also compare sp-N47. The Bessettes provided a photograph.

The figures that follow provide comparisons of sporographs for the taxa mentioned above:

citations

—R. E. Tulloss

editors

RET

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