|
Amanita aurantisquamosa
Trueblood, O. K. Mill. & Dav. T. Jenkins "Trueblood's Orange-Scaled Amanita" :: Technical description (t.b.d.) BRIEF DESCRIPTION: This description is based on the original description (1990). The cap of Amanita aurantisquamosa is 35 - 70 mm wide, robust, convex to nearly plane at maturity, glabrous, light tan to pale tannish-orange, with faintly striate margin when young and a striate and slightly downturned margin at maturity. The volval remnants are floccose-membranous patches, randomly distributed, thinning toward the margin. The patches are firmly attached, white, but frequently having yellowish to yellowish-brown stains over the surface. Gills are moderately crowded, free, off-white to orange-white when young, white at maturity. The short gills are moderately abundant, mostly short, and truncate to rounded truncate. Its stem is 40 - 110 (-135) x 8 - 22 mm, narrowly clavate, tapering toward the slightly expanded top, white with small, white, floccose scales near the top of the stem and a series of appressed, obscure to well-developed, white to pale orange scales near the middle and base of the stem. The flesh of the stem is pale pinkish-white. The central cylinder of the stem is stuffed. The basal bulb is ovoid, sometimes only slightly broader than the stem at maturity. The volval remnants may be lost in collecting but sometimes are attached to the bulb and more or less limbate, sometimes quite large, then soon easily breaking, white with yellowish to yellowish-brown stains on the the surface. The ring is delicate, white, small, and not close to the top of the stem, and often under the stem's midpoint, easily breaking, frequently absent in older specimens. The spores measure 10.2 - 12.5 x 9.4 - 10.9 µm and are subglobose to broadly ellipsoid and are inamyloid. Clamps are absent at bases of basidia. This species was originally described from Idaho (USA) where it occurs scattered under Douglas fir (Pseudotsuga menziesii), aspen (Populus tremuloides), and juniper (Juniperus scopulorum). The authors believe that one or both of the first two trees listed were the host species. As far as we know, this species is still known only from southern Idaho. -- R. E. Tulloss Return to Section Amanita page. Last changed 30 January 2008. |