| name |
Amanita sp-AZ10 |
| author |
Tulloss |
| 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 |
58 - 130 mm wide, whitish, remaining most pallid at margin, with tones of orangish cream (5YR 8/3) or orangish cream to tan (7.5YR 7-8/6) to grayish tan (5B4) or brownish orange (8C6) or brown (2.5YR 3/4) or dark brown (8F5-6 to 8F8) over disc, virgate, very broadly campanulate to irregularly convex to planar, sometimes with an umbo at maturity, tacky to dry, subshiny to dull, changing to pale wine red or pinkish when bruised or cut; context white, changing to wine red or pinkish (e.g., 8-9A2) or sordid pale orange-brown (8B3) when cut or bruised especially near lamellae and near pileipellis, sometimes with a watery line above the lamellae, 7 - 9± mm thick at stipe, 5± mm thick above center of lamellae, thinning evenly to margin, sometimes spongy; margin nonstriate, nonappendiculate; universal veil as flat patches and subpyramidal warts, with patches cotton-like at first, sometimes friable in age, whitish at first, becoming pale grayish buff (5YR 8/2) to tan (5YR 6/4) to sordid pale orange-brown (8B3) to brown (8E4 or 5YR 4/4), paler than pileus in exsiccata; pileipellis separable to the disc. |
| lamellae |
free with decurrent line on stipe, crowded, white to off-white in mass, very pale grayish white in side view, bruising brown (8E5) to dark reddish brown (8F8), 7 - 9± mm broad, with margin finely fimbriate, sometimes forking near stipe; lamellulae truncate (shortest) to attenuate (longest), varying greatly in length, plentiful. |
| stipe |
73 - 85± × 12 - 27 mm, white or whitish, becoming pale pinkish white (7A2) to sordid light orange-brown (7B3) to light gray-brown (8C3) to brown (8E4) to dark reddish brown (8F5-6 to 9F8) to wine red, sometimes darkest in lower part of stipe, subcylindric or narrowing upward or downward, flaring at apex, with subsatiny ground, longitudinally striatulate and sometimes fibrous-squamulose below annulus (with fibrils bruising as above), pulverulent above it; bulb 45 - ?? × (17-) 22 - 50 mm, napiform to subnapiform, often subabrupt, rounded below; context off-white, changing to pale pinkish white (7A2) or light gray-brown (8C3) or red with a tint of dark reddish brown (9F8) or wine red where cut or bruised, solid to stuffed with longitudinally oriented white fibrils, with central cylinder 4 mm wide, wine red in larva tunnels; partial veil superior, copious, membranous, skirt-like, striate above, subfelted below, white to pale cream, pale wine or pinkish in some areas on both surfaces, becoming reddish or dark brown particularly on underside of edge; universal veil absent or present in substrate, friable, becoming brown (9-10E4). |
| odor/taste |
Odor fungoid or lacking. Taste not recorded. |
macrochemical
tests |
none recorded. |
| basidiospores |
[120/6/5] (7.8-) 8.2 - 10.5 (-11.5) × (5.2-) 5.5 - 6.8 (-7.3) μm, (L = 8.8 - 10.3 μm; L' = 9.2 μm; W = 5.8 - 6.3 μm; W' = 6.0 μm; Q = (1.31-) 1.44 - 1.69 (-1.81); Q = 1.43 - 1.61; Q' = 1.53), hyaline, colorless, smooth, thin-walled, amyloid, ellipsoid to elongate, sometimes expanded at one end, often adaxially flattened; apiculus sublateral, cylindric, proportionately small; context ??; white in deposit. |
| ecology |
Solitary or paired. Mexico (Hidalgo): In Quercus-Pinus patula cloud forest. Mexico (Tlaxcala): At 2640 m elev. In open Quercus woodland. U.S.A. (Arizona): At 2450 m elev. In dark loam under Pinus arizonica in mixed conifer forest including P. arizonica and Pseudotsuga menziesii. |
| material examined |
MÉXICO:
HIDALGO—Mpio. Unkn. - ca. northern jct. of México Carretera Federal 105 deviation for Zacualtipan & main México Carretera Federal 105 [20°40’28” N/ 98°40’29” W], 18.vii.1996 R. E. Tulloss 7-18-96-D (RET 252-8; TLXM).
TLAXCALA—Mpio. Panotla - 1 km E of San Francisco Temezontla [19°20’41” N/ 98°16’31” W, 2640 m], 17.ix.1993 A. Montoya Esquivel 1351 (RET 126-4; TLXM), 24.ix.1993 A. Montoya Esquivel 1361 (RET 126-3; TLXM), 29.viii.1994 A. Montoya Esquivel, A. Kong Luz & R. E. Tulloss 8-29-94-B (RET 134-3; TLXM), -E (RET 134-8; TLXM), 15.vii.1996 A. Montoya Esquivel & R. E. Tulloss 7-15-96-C (RET 254-9; TLXM), -K (RET 253-10; TLXM), 17.vii.1996 A. Montoya Esquivel & R. E. Tulloss 7-17-96-E (RET 255-8; TLXM).
U.S.A.:
ARIZONA—Cochise Co. - CMP site #46, 18.viii.1991 R. E. Tulloss 8-18-91-Y [CMP0863] (RET), 29.viii.1991 R. M. Chapman s.n. [CMP1611] (RET), 10.ix.1991 L. Ortiz s.n. [CMP1620] (RET). |
| discussion |
Exsiccata of the present taxon are stocky and robust. The pileus diameter is always greater than the length of the stipe and, often, greater than the sum of the lengths of the stipe and bulb.
The reverse is true in of A. sp-AZ01, which, to date, has not been found in Mexico and is not known from the mixed conifer habitat zone in the Chiricahua Mountains.
The following figure provides a sporograph comparison of the present species and A. sp-AZ01:
 |
| citations |
—R. E. Tulloss |
| editors |
RET |
|
Spore data sets and their composite