name | Amanita subglobosa |
name status | nomen acceptum |
author | Zhu L. Yang |
english name | "Ringed-Bulb Amanita" |
images | |
intro | Fruiting bodies of Amanita subglobosa are medium-sized to large, or occasionally small. |
cap |
The cap is 40 - 100 (-150) mm wide, convex to applanate, sometimes concave, brownish to brown to cinnamon-buff, darker in the center, densely covered with white, dirty white to yellowish, conical to verrucose volval remnants 1 - 2 mm high and 1 - 2.5 mm wide; the cap's margin is striate (10% to 40% of radius) and non-appendiculate; the cap's context is white. |
gills |
The gills are free to subfree and white to cream; the short gills are truncate. |
stem |
The stipe is 50 - 150 (-240) × 5 - 20 (-30) mm, subcylindric, cream to white, and fibrillose; the stipe's basal bulb is 15 - 35 mm wide and subglobose, with its upper part covered with white, or sometimes yellowish to brownish, verrucose, granular to farinose volval remnants. There is often a collar encircling the base of the stipe and atop the bulb. The annulus is membranous, white, often on the upper part of stipe, although sometimes almost median, and persistent. |
spores |
The spores measure (7.5-) 8.5 - 12.0 (-15.0) × (6.0-) 7.0 - 9.5 (-12.5) µm and are broadly ellipsoid to ellipsoid (or rarely subglobose or elongate) and inamyloid. Clamps are common on the bases of basidia. |
discussion |
Originally described from southwestern China and widely distributed in that country, this species may occur in Japan also. Although this species' general appearance suggests Amanita pantherina (DC. : Fr.) Krombh., that species lacks clamps at the bases of basidia. Plentiful clamps are a character that A. subglobosa shares with the species phenetically similar to A. muscaria (L. : Fr.) Lam. For a very similar species described recently from Japan, see A. ibotengutake T. Oda, C. Tanaka & Tsuda.—Zhu L. Yang. |
brief editors | RET |
name | Amanita subglobosa | ||||||||||||||||||||||||||||
author | Zhu L. Yang. 1997. Biblioth. Mycol. 170: 18, figs. 5-9. | ||||||||||||||||||||||||||||
name status | nomen acceptum | ||||||||||||||||||||||||||||
english name | "Ringed-Bulb Amanita" | ||||||||||||||||||||||||||||
MycoBank nos. | 444654 | ||||||||||||||||||||||||||||
GenBank nos. |
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holotypes | HKAS | ||||||||||||||||||||||||||||
intro |
The following text may make multiple use of each data field. The field may contain magenta text presenting data from a type study and/or revision of other original material cited in the protolog of the present taxon. Macroscopic descriptions in magenta are a combination of data from the protolog and additional observations made on the exiccata during revision of the cited original material. The same field may also contain black text, which is data from a revision of the present taxon (including non-type material and/or material not cited in the protolog). Paragraphs of black text will be labeled if further subdivision of this text is appropriate. 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. NOTE: Spore data from papers by Z. L. Yang are presented following his use of the "Times New Roman" face for "Q" and "Q'"—respectively, " | ||||||||||||||||||||||||||||
basidiospores |
from protolog: [110/4/3] (8.5-) 9.5 - 12.0 (-15.0) × (6.5-) 7.0 - 9.5 (-12.5) μm, ( from Yang (2002a): [115/7/7] (8.0-) 9.0 - 12.0 (-13.0) × (6.5-) 7.0 - 9.0 (-9.5) μm, (Q = (1.05-) 1.19 - 1,50 (-1.63); Q' = 1.34 ± 0.10), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid, sometimes subglobose, rarely elongate; apiculus proportionately small; contents not recorded; color in deposit not recorded. | ||||||||||||||||||||||||||||
ecology | China: Solitary or in small groups. At 2000± m elev. In mixed forest with Pinus and members of the Fagaceae. | ||||||||||||||||||||||||||||
material examined |
from protolog: CHINA:
SICHUAN—Liangshan Yi Autonomous
Prefecture - Xichang (county level) City,
Luojishan, ca. 2000 m elev., 30.ix.1983 M. S. Yuan
247 (holotype, HKAS 12009); Xichang (county level)
City, Luojishan, 30.ix.1983 M. S. Yuan 251
(paratype, HKAS 12012). Guangyuan (prefecture
level) City - Qingchuan Co., Xinguan, 4.ix.1985
M. S. Yuan 1100 (paratype, HKAS
15919). from Yang (2002a): CHINA: JILIN—Yanbian Korean Autonomous Prefecture - Antu Co., Mt. Changbai, s.d. Y. Wang 811018 (IFP), 811238 (IFP, s.d. Y. C. Yang et al. 515 (HMAS 29131), 701 (HMAS 29132), 798 (HMAS 29130), 799 (HMAS 29129), 800 (HMAS 30833). RET: INDIA: UTTARAKHAND—Pauri Distr. - Khirsu, 9.vii.2015 Tahir Mehmood 0151 (BSIS; RET 717-5). unkn. loc., | ||||||||||||||||||||||||||||
citations | —Zhu L. Yang and R. E. Tulloss | ||||||||||||||||||||||||||||
editors | RET | ||||||||||||||||||||||||||||
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name | Amanita subglobosa |
bottom links | [ Keys & Checklists ] |
name | Amanita subglobosa |
bottom links | [ Keys & Checklists ] |
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.