name | Amanita sepiacea |
name status | nomen acceptum |
author | S. Imai |
english name | "Asian Sepia Amanita" |
images | |
intro | This page is based on original research by ZYL. |
cap |
Fruiting bodies of Amanita sepiacea are medium-sized to large. The cap is 60 - 150 mm wide, convex to applanate, dark grey to brown to blackish, darker in the center, innately fibrillose, covered with dirty white to greyish (often brownish grey at the base) conical to verrucose warts, 1 - 4 mm high and wide; the cap's margin is smooth and non-appendiculate; the cap's context is white. |
gills |
The gills are free to subfree and white; the short gills are attenuate. |
stem |
The stipe is 100 - 180 × 10 - 25 mm, subcylindric or attenuate upwards, with its surface white to dirty white—its lower half covered with greyish to grey fibrillose squamules; the stipe's basal bulb is 15 - 50 mm wide, subglobose to spindle-shaped to turnip-shaped, with its upper part covered with white, rarely greyish, verrucose to conical volval remnants in a few concentric incomplete rings. The annulus is apical to subapical, membranous, and white. |
spores |
The spores measure (7.0-) 7.5 - 9.5 (-11.0) × (5.5-) 6.0 - 7.0 (-8.0) µm and are broadly ellipsoid to ellipsoid, although occasionally subglobose or globose and amyloid. Clamps are absent from the bases of basidia. |
discussion |
The species was originally described from Japan and occurs also in China. For comparison, see A. tristis Corner & Bas.—Zhu L. Yang |
brief editors | RET |
name | Amanita sepiacea | ||||||||||||||||
author | S. Imai. 1933. Bot. Mag. (Tokyo) 47: 426. | ||||||||||||||||
name status | nomen acceptum | ||||||||||||||||
english name | "Asian Sepia Amanita" | ||||||||||||||||
synonyms |
≡Amplariella sepiacea E.-J. Gilbert. 1940. Iconogr. Mycol. (Milan) 27, suppl. (1): 78. The editors of this site owe a great debt to Dr. Cornelis Bas whose famous cigar box files of Amanita nomenclatural information gathered over three or more decades were made available to RET for computerization and make up the lion's share of the nomenclatural information presented on this site. | ||||||||||||||||
MycoBank nos. | 277888, 284160 | ||||||||||||||||
GenBank nos. |
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lectotypes | in herb. S. Imai (SAP) | ||||||||||||||||
lectotypifications | Hongo. 1959. Mem. Fac. Liberal Arts Shiga Univ., Pt. 2, Nat. Sci. 9: 72. | ||||||||||||||||
revisions | Z. L. Yang. 1997. Biblioth. Mycol. 170: 185, figs. 151-154. | ||||||||||||||||
selected illustrations | E.-J. Gilbert. 1941. Iconogr. Mycol. (Milan) 27, suppl.: 360, tab. 52. | ||||||||||||||||
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 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, " | ||||||||||||||||
basidiospores |
from Yang (1997): [32/1/1] (7.0-) 8.0 - 10.5 (-11.0) × 6.0 - 7.5 (-8.0) μm, ( from Yang (2002a): [40/2/2] 7.0 - 9.0 (-10.0) × (5.5-) 6.0 - 7.5 μm, ( | ||||||||||||||||
ecology | In small groups. China: At 1900± m elev. In subtropical, evergreen, broad-leaved forest with representatives of the Fagaceae. | ||||||||||||||||
material examined |
Yang (1997): CHINA: YUNNAN—Honghe Hani and Yi Autonomous Prefecture - Pingbian Miao Autonomous Co., Daweishan, 1900 m elev., 4.vii.1992 Z. L. Yang 1864 (HKAS 32519). Yang (2002a): CHINA: JILIN—Baishan (prefecture level) City - Changbai Korean Autonomous Co. - Mt. Changbai, s.d. Z. X. Xie 820684 (IFP); Fusong Co., Mt. Changbai, s.d. Z. X. Xie 820735 (IFP). Zhang et al. (2004) voucher for sequencing: CHINA: UNKN. PROV.—unkn. loc., s.d. unkn. coll. s.n. (HKAS 38716, nrITS & nrLSU seq'd.). composite of material revised by RET: INDIA: UTTARANCHAL—unkn. locality, | ||||||||||||||||
citations | —Z. L. Yang and R. E. Tulloss | ||||||||||||||||
editors | RET | ||||||||||||||||
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Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer; and explanations prepared for this site talk about specimen-observer pairs associated with each data set. Combining more data into a single data set is non-optimal because it obscures observer differences (which may be valuable for instructional purposes, for example) and may obscure instances in which a single collection inadvertently contains a mixture of taxa.