Amanita oberwinklerana - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella

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name	Amanita oberwinklerana
name status	nomen acceptum
author	Zhu L. Yang & Yoshim. Doi
english name	"Oberwinkler's Destroying Angel"
images	1. Amanita oberwinklerana, Guangzhou City, Guangdong Province, China. 2. Amanita oberwinklerana, Guangzhou City, Guangdong Province, China.
cap	The fruiting bodies of A. oberwinklerana are small to medium-sized. The cap is 30 - 60 (-80) mm wide, convex to applanate,white, occasionally cream over disc, and glabrous or covered with a few white, membranous volval remnants; the cap's margin is smooth and non-appendiculate; the cap's flesh is white and unchanging.
gills	The gills are free, white at first, and become cream to yellowish when over-mature; the short gills are attenuate.
stem	The stem is 50 - 70 (-90) × 5 - 10 (-15) mm, slightly attenuate upwards, with a surface that is white, and glabrous or covered with white fibrillose to somewhat reflexed squamules; the stem's basal bulb is subflobose to napiform and 10 - 20 mm wide. At the base of the stem, the volva is limbate, with a free limb up to 10 mm high, and with both inner and outer surfaces white. The annulus is membranous and white. The response to dilute KOH solution in A. oberwinklerana is negative.
odor/taste	Not known. This mushroom should be considered deadly POISONOUS.
spores	The spores measure (7.5-) 8.0 - 10.5 (-12.0) × (5.5-) 6.0 - 8.0 (-10.5) µm and are ellipsoid or, sometimes, broadly ellipsoid and amyloid. Clamps are absent from the bases of basidia.
discussion	This species was originally described from Japan, but also occurs in China.—Zhu L. Yang [Note: Among the white species of section Phalloideae, the upstanding volval limb accompanied by ellipsoid spores and lack of a response to KOH solution is particularly reminiscent of A. elliptosperma G. F. Atk. of North America.—ed.]
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name

Amanita oberwinklerana

author

Zhu L. Yang & Yoshim. Doi. 1999. Bull. Natl. Sci. Mus., Tokyo, Ser. B 25(3): 120, figs. 20-25.

name status

nomen acceptum

english name

"Oberwinkler's Destroying Angel"

etymology

Oberwinkler + -ana, suffix indicating possession; hence, "of Oberwinkler"

Honoring Franz Oberwinkler.

MycoBank nos.

459920

GenBank nos.

Due to delays in data processing at GenBank, some accession numbers may lead to unreleased (pending) pages. These pages will eventually be made live, so try again later.

accession	locus	voucher	source
FJ176725	nrITS	(MHHNU 7113)	Zhang et al. (2010), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China
FJ176724	nrITS	(MHHNU 6977)	Zhang et al. (2010), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China
FJ011684	nrLSU	(MHHNU 7114)	Zhang et al. (2010), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China
FJ011683	nrLSU	(MHHNU 7113)	Zhang et al. (2010), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China
FJ176726	nrITS	(MHHNU 7114)	Zhang et al. (2010), Key Lab. Biodivers. Biogeogr., Kunming Inst. Bot., Yunnan, China

holotypes

TNS

revisions

Z. L. Yang & T. H. Li. 2001. Mycotaxon 78: 443, figs. 5-6.

selected illustrations

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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.

NOTE: Spore measurements from papers by Z. L. Yang use his "Times New Roman" face for "Q" and "Q'"—respectively, "Q" and "Q."

macrochemical
tests

KOH soln. - negative.

basidiospores

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From protolog: [155/7/6] (7.5-) 8.0 - 10.5 (-12.5) × (5.5-) 6.5 - 8.0 (-8.5) μm, (Q = (1.13-) 1.19 - 1.50 (-1.71); Q = 1.34 ± 0.10), hyaline, colorless, smooth, thin-walled, amyloid, broadly ellipsoid to ellipsoid, rarely subglobose or elongate; apiculus small.

From revision of Yang and Li (2001): [130/7/3] (7.5-) 8.0 - 10.0 (-11.0) × (5.5-) 6.0 - 7.0 (-7.5) μm, (Q = (1.14-) 1.26 - 1.54 (-1.64); Q = 1.38 ± 0.09), hyaline, colorless, smooth, thin-walled, amyloid, ellipsoid, sometimes broadly ellipsoid, rarely elongate; apiculus small.

ecology

Solitary to gregarious. China: At 380-3350 m elev. In both broad-leaved and coniferous forests. Japan: In forests.

material examined

From protolog: JAPAN: HONSHU—Tokyo Metropolis (Pref.) - Oume City, Kurosawa 3-Chôme, left-side ridge of Kurosawa-gawa R., along hiking course, 16.vii.1997 Y. Doi & K. Miyazaki s.n. (paratype, TNS F-182594), 25.ix.1997 Y. Doi s.n. (paratype, TNS F-237780); Oume City, Kurosawa 3-Chôme, Nagayama-Kyûryô Hills, along hiking course, 5.x.1997 Y. Doi s.n. (paratype, TNS F-237572), s.n. (holotype, TNS F-237722), s.n. (paratype, TNS F-237727), s.n. (paratype, TNS F-237750).

From (Yang and Li, 2001): CHINA: GUANGDONG—Guangzhou (sub-provincial) City - Unkn. Distr., Baiyunshan, 2.ix.1998 Z.-L. Yang 2493 (HKAS 32526). GUIZHOU—Unkn. Prefecture - Unkn. Co., Lipo, Maolan Nat. Nature Reserve, 2.viii.1988 J.-Z. Ying et al. G600 (HMAS 57978). SICHUAN—Liangshan Yi Autonomous Prefecture - Muli Co., For. Stn. No. 913, 27.viii.1983 K.-K. Chen 850 (HKAS 13773).

Zhang et al. (2010) vouchers for sequencing: CHINA: GUANGDONG—Guangzhou (sub-provincial) City - Unkn. Distr., Baiyunshan, s.d. unkn. coll. s.n. (MHHNU 7113), s.d. unkn. coll. s.n. (MHHNU 7114). HUNAN—Chenzhou (prefecture level) City - Yizhang Co., Mangshan, s.d. unkn. coll. s.n. (MHHNU 6977); Zhangjiajie (prefecture level) City - Unkn. Distr., unkn. loc., s.d. unkn. coll. (MHHNU 6826).

citations

—R. E. Tulloss

editors

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Spore data for collections
provisionally identified as: Amanita oberwinklerana Zhu L. Yang & Yoshim. Doi

Spore data sets and their composite

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.

basidiospore definition

Spore Measurements by Collection

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