Fruiting bodies of Amanita rubrovolvata are small to medium-sized, and sometimes very small.
The pileus is 20 - 65 mm wide, convex to applanate, sometimes slightly umbonate, red to orange, becoming orange to yellowish at margin, densely covered with red to orange to yellow, farinose to granular volval remnants; the margin is striate (30% to 60% of the radius) and non-appendiculate; and the context is white.
The gills are free and white; the short gills are truncate.
The stipe 50 - 100 × 5 - 10 mm, subcylindrical or slightly attenuate upwards, with a surface that is cream above the annulus and cream to yellowish below it. The stipe''''s basal bulb is subglobose, 10 - 20 mm wide, with its upper part covered with red, orange to yellow floccose to farinose volval remnants. The annulus is membranous, persistent, with an upper surface that is white and a lower surface having a yellowish tinge and an edge that is red to orange.
The odor and taste of this species have not been recorded.
The spores measure (7.0-) 7.5 - 9.0 (-11.0) × (6.5-) 7.0 - 8.5 (-10.5) µm and are globose to subglobose and inamyloid. Clamps are not found on the bases of basidia.
Originally described from Japan, this species occurs in China, northern India, Japan, Nepal, South Korea, and countries of Southeast Asia (for example, Thailand).—Zhu L. Yang
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.
From Corner & Bass (1962): [-/-/-] 7.5 - 9.9 (-11.3) × 7.4 - 9.9 μm, (Q = 1.0 - 1.10 (-1.13), hyaline, colorless, smooth, thin-walled, inamyloid, globose to subglobose; apiculus proportionately rather broad; contents comprising one medium-large gutta or several small ones; color in deposit not recorded.
Solitary or scattered or in small groups. China: At 1100-2500 m elev. In conifer and mixed forests with Pinus spp. (e.g., P. yunnanensis and P. kesiya var. langbianensis) with representatives of the Fagaceae or in evergreen broad-leaved forests in subtropical latitudes (e.g., with Castanopsis and Lithocarpus).
India: At up to 3250± m elev. In mixed forest including Quercus dilatata and P. wallichiana or in humus rich soil under Q. leucotricophora, Myrica esculenta, and Rhododendron arboreum.
Japan: In Larix forest or with Castanopsis cuspidata. Nepal: In forest with C. tribuloides, Euria acuminata, and C. indica.
Malaysia: Solitary. At 1500 m alt. Ca. Quercus in highlands.
From Corner & Bass (1962): MALAYSIA: PAHANG—Cameron's Highlands, 31.vii.1934 E. J. H. Corner s.n. (L), 1.viii.1934 E. J. H. Corner s.n. (L, in liquid p.p.).
from Yang (1997): CHINA:
SICHUAN—Shaojiao, Sikai, 28.viii.1992 P. G. Liu & M. S. Yuan 1522 (HKAS 25776).
YUNNAN—Dali Bai Autonomous Prefecture - Binchuan Co., Jizushan, 2.viii.1985 G. P. Xiao 146 (HKAS 17033).
Dehong Dai and Jingpo Autonomous Prefecture - Mang (county level) City (Luxi City), Santaishan, 1.vii.1977 X. Z. Li 67 (HKAS 2898).
Honghe Hani and Yi Autonomous Prefecture - Pingbian Miao Autonomous Co., Daweishan, 4.vii.1992 Zhu L. Yang 1887 (HKAS 32511).
Kunming (prefecture level) City - Unkn. District, unkn. loc., vi.1942 W. F. Chiu 8175 (HMAS 4175, as "Amanita bingensis" in (Chiu 1948: 168) & in (Ying & Zang 1994: 133).
Pu'er Prefecture - Jiangcheng Hani and Yi Autonomous Co., Hongjiang, 6.viii.1991 Zhu L. Yang 1394 (HKAS 24193); Jiangcheng Hani and Yi Autonomous Co., Niuluohe, 7.viii.1991 Zhu L. Yang G. Song 110 (HKAS 24192); Jingdong Yi Autonomous Co., unkn. loc., 27.viii.1991 Zhu L. Yang 1688 (HKAS 24186); Jinggu Dai and Yi Autonomous Co., unkn. loc., 21.viii.1991 Zhu L. Yang 1606 (HKAS 24185); Simao District, unkn. loc., 3.viii.1991 Zhu L. Yang 1365 (HKAS 24189).
Wenshan Zhuang and Miao Autonomous Prefecture - Maguan Co., Gulinjing, 1.vii.1992 P. G. Liu 1227 (HKAS 32502).
Xishuangbanna Dai Autonomous Prefecture - Menghai Co., Mangao, 14.viii.1991 G. Song 161 (HKAS 24188), Zhu L. Yang 1515 (HKAS 14191); Menghai Co., Mangun, 14.x.1974 M. Zang 2178 (HKAS 24188); Mengla Co., Menglun, 22.x.1989 Zhu L. Yang 776 (HKAS 22514), 9.viii.1991 Zhu L. Yang 1495 (HKAS 24194); Mengla Co., Shangyong, 24.ix.1974 M. Zang 1641 (HKAS 1641).
RET: CHINA: YUNNAN—Honghe Hani and Yi Autonomous Prefecture - Pingbian Miao Autonomous Co., Daweishan, 4.vii.1992 Zhu L. Yang 1887 (HKAS 32511).
HIMACHAL PRADESH—Shimla District, Narkanda, Hattoo Peak, 18.viii.1986 T. N. Lakhanpal and/or students s.n. (HPUB 4359, as "A. muscaria var. flavivolvata"; BPI 71986).
UTTARAKHAND—Garhwal - Pauri District, Dandapani, 20.ix.1999 V. K. & R. P. Bhatt s.n. (GUH M-20169; RET 304-9).
JAPAN: HONSHU—Nagano Prefecture - Nagano, Togakushi-Kôgen, 4.x.1976 T. Hongo 5566 (in herb. T. Hongo).
NEPAL: CENTRAL REGION—Bagmati Zone - Bhaktapur District, Nala (10 km NE of Bhaktapur City, E of Kathmandu), 2046/3/27 H. R. Bhandary s.n. (RET 157-2); Kathmandu District, Shivapuri, 2047/4/6 H. R. Bhandary s.n. (RET 157-3).
UNKN. REGION—Unkn. Zone - Unkn. District, unkn. loc., in market, 23.vii.1994 H. R. Bhandary 2029 (RET 157-9).
The present species is reported from China, northern India, Japan, Malaysia, Nepal, South Korea, and Thailand.
—Zhu L. Yang, R. E. Tulloss
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can be found here.
"Red Volva Amanita"
1. Amanita rubrovolvata, Yunnan Prov., China.
2. Amanita rubrovolvata, Uttarakhand, India.
3. Amanita rubrovolvata, Uttarakhand, India.
Zhu L. Yang - (1) Yunnan Province, China.
Dr. Rajendra P. Bhatt - (2) Uttarakhand [state], India.
Dr. Kamal Semwal - (3) Uttarakhand [state], India.
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.