| name | Amanita sp-AZ25 | ||||||||
| name status | cryptonomen temporarium | ||||||||
| GenBank nos. |
Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages.
These pages will eventually be made live, so try again later.
| ||||||||
| pileus | 98 mm wide, white, developing ochraceous spots, broadly convex with slightly incurved margin, dry, matte; context off-white, becoming sordid pink less than 1 min. after being cut, 10 mm thick at stipe, thinning evenly to margin; margin nonstriate at first, appendiculate (with fine flocculence); universal veil as membranous patch (roughly central, originally white, becoming sordid tan, cracking here and there, otherwise smooth) and scattered fibrils (originally white, becoming brick-colored, representing inner layer of universal veil). | ||||||||
| lamellae | free, close (in exsiccatum), cream in mass, pale cream in side view, pale pink in 1? min after bruising, 8.5 mm broad, with edge bearing pale cream to white flocculence; lamellulae truncate to subtruncate, ??. | ||||||||
| stipe | 69 × 19 mm, white, with white surface pulverulence/flocculence staining pinkish brown, narrowing upward, not flaring at apex; context off-white, becoming pink in 1? min after bruising, stuffed with white fibrillose material (with densely packed fibrils having apparent longitudinal arrangment and becoming pinkish tan when crushed), with larva tunnels concolorous; partial veil as thin and floccose line, white, submedian, lasting 24+ hr; universal veil as thick saccate volva, membranous, tough, leathery, breaking up into several roughly triangular limbs, with exterior surface whitish and taking on reddish brown tints, with interior pale grayish buff with concolorous larva tunnels, 60 × 48 mm, with limbs 2.5 - 4 mm thick at mid-height, with limbus internus small, sometimes shelf-like, set low on interior of limb (at point of attachment to stipe in “button” stage. | ||||||||
| odor/taste | Odor fresh and pleasant. Taste mild and pleasant. | ||||||||
| macrochemical tests |
Syringaldazine spot test for laccase - positive only on surface of stipe [within 2 - 3 min, then fading or being overcome by orange oxidation reaction promoted by solvent (ethanol)], negative throughout remainder of basidiocarp. Paracresol spot test for tyrosinase - positive throughout basidiocarp (for most parts within 2 - 3 min). | ||||||||
| basidiospores | [20/1/1] (10.5-) 10.8 - 14.0 (-14.5) × (5.0-) 5.2 - 6.2 (-6.5) µm, (L = 12.0 µm; L’ = 12.0 µm; W = 5.7 µm; W’ = 5.7 µm; Q = (1.81-) 1.83 - 2.42 (-2.55); Q = 2.10; Q’ = 2.10), hyaline, colorless, thin-walled, smooth, amyloid, elongate to cylindric, adaxially flattened, sometimes slightly constricted, occasionally expanded at one end; apiculus sublateral, truncate-conic, small; contents granular to monoguttulate; color in deposit not recorded, probably white. | ||||||||
| ecology | Arizona: Solitary. In loam/duff under conifers. | ||||||||
| material examined | U.S.A.: ARIZONA—Cochise Co. - “downhill” from CMP site #46, 21.viii.1992 Richard L. Homola s.n. [Tulloss 8-21-92-F; CMP1304] (RET). | ||||||||
| discussion |
The range of this species appears to overlap with that
of another taxon of section
Amidella—A.
fallax. A sporograph comparison of the two species is provided here: The spore size and shape of the two taxa are similar. However, the sample size for the spore data is small. | ||||||||
| citations | Macroscopically, this entity is similar morphologically to A. volvata sensu Herrera & Pérez-Silva (1984), which was described from Mexico (states of Hidalgo, Mexico, and Morelos).—R. E. Tulloss | ||||||||
| editors | RET | ||||||||
Information to support the viewer in reading the content of "technical" tabs can be found here.
Text and User-Generated Sporographs are published under the Creative Commons License.
In the case of a taxon page, image credits are on the 'image' tab.
