The following is based on the original research of Zhu L. Yang.
The fruiting bodies of A. pseudogemmata are small to medium-sized. The cap is 40-90 mm wide, convex to applanate, yellowish to pale yellow-brown, paler towards the margin; its margin is short-striate; it is covered with brownish grey to olivaceous brown verrucouse to farinose volval remnants. Its trama is white.
The gills of this species are free, crowded, cream-colored; and the short gills are truncate, and of diverse lengths.
The stem is 60 - 100 × 5 – 15 mm, subcylindrical to attenuate upwards; its surface is cream-colored to white, and covered with yellow to brownish yellow squamules; the stem''s basal bulb is 15 - 40 mm wide, limbate to subtruncate. The annulus is persistent, its upper surface is white and its lower surface, yellowish.
Spores of A. pseudogemmata measure (6.0-) 7.0-9.5 (-10.5) × (5.5) 6.0-8.5 (-9.5) µm and are broadly ellipsoid to ellipsoid, and inamyloid. Clamps are not present at the bases of basidiae.
Amanita pseudogemmata was originally described from Japan. It occurs in broad-leaved forests with fagaceous plants. It has been known from China and Japan.
Amanita pseudogemmata is characterized by its yellowish to brownish yellow pileus with brownish grey to olivaceous brown verrucouse to farinose volval remnants; limbate to subtruncate basal bulb; inamyloid, broadly ellipsoid to ellipsoid spores; and the absence of clamps.
Zhang et al. (2004), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China
TNS [per Doi. 1991. Bull. Natl. Sci. Mus., Tokyo, Ser. B 17(2): 50]
Yang and Doi. 1999. Bull. Natl. Sci. Mus. Tokyo B 25(3): 112.
Imazeki and Hongo. 1987. Color. Illus. Mushr. Japan 1: 118, pl. 27 (fig. 199).
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The following material not directly from the protolog of the present taxon and not cited as the work of Dr. Z. L. Yang or another researcher is based upon original research by R. E. Tulloss.
NOTE: Spore measurements from papers by Z. L. Yang use his "Times New Roman" face for "Q"
and "Q'"—respectively, "Q" and "Q."
in Yang and Doi (1999): [30/1/1] (7.0-) 7.5 - 9.5 (-10.0) × (6.0-) 6.5 - 7.5 (-8.0) μm, (Q = (1.10-) 1.19 - 1.38 (-1.40); Q = 1.29 ± 0.07), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, infrequently subglobose; apiculus small.
Japan: In forest of Castanopsis cuspidata.
from protolog: JAPAN: HONSHU—Kyoto-fu - Kyoto-shi, Sakyo-Ku, Ginkakuji, 9.viii.1970 H. Noro s.n. [T. Hongo 420] (holotype, in herb Hongo => TNS (F-237280).
Yang and Doi (1999): JAPAN: HONSHU—Kyoto-fu - Kyoto-shi, Sakyo-Ku, Ginkakuji, 9.viii.1970 H. Noro s.n. [T. Hongo 420] (holotype, in herb Hongo => TNS (F-237280).
Zhang et al. (2004) voucher for sequencing: CHINA: YUNNAN—Unkn. loc., s.d. unkn. coll. s.n. (HKAS 38371).
The Japanese name of this species is "ibo-kogane-tengutake" (Doi 1991).
—R. E. Tulloss
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