Amanita retenta

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name	Amanita retenta
name status	nomen acceptum
author	Yang-Yang Cui, Qing Cai & Zhu L. Yang
intro	This text is derived from the original description of Amanita retenta. The fruiting bodies of Amanita retenta are small to medium-sized.
cap	The cap is 30 – 70 mm wide, plano-convex to planar, dirty white, grayish, gray, gray-brown to brown, occasionally pure white. Volva is often present as large, white patches slightly attached on the cap. The cap’s margin is radially grooved covering 15% - 40% of the cap's radius. There is no material hanging from the edge. The flesh is white.
gills	The gills are free, crowded, and white. The short gills are truncate and plentiful.
stem	The stem is 70 – 110 × 4 – 15 mm, nearly cylindrical or narrows upwards, white, dirty white to brownish, covered with minute, concolorous, snake-like squamules. The stem lacks a basal bulb. At the stem's base, the volva is saccate, 10 – 40 × 10 – 20 mm, membranous, and both the inner and outer surfaces are white to dirty white.
odor/taste	The odor and taste were not recorded for the present species.
spores	The spores measure 10.0 – 12.0 × 9.5 – 11.5 µm and are globose to subglobose and inamyloid. There are no clamps at the bases of basidia.
discussion	Amanita retenta is described from Yunnan Province, China. It is found in pine or mixed forests. Note that because there are abundant inflated cells in the outer part of the volva on the stem’s base, the volva can easily be broken during the development of the fruiting body. Specimens of A. retenta with entirely white fruiting bodies have also been collected in the field. The white fruiting bodies of A. retenta could be misidentified as the European A. vaginata var. alba Gillet. For example, HKAS 82591 was treated as A. vaginata var. alba by Yang (2015) and should be a species of A. retenta based on molecular evidence in Cui et al. (2015). Additionally, A. vaginata var. alba differs from the white fruiting bodies of A. retenta by the absence of patches on the cap, and the irregularly distributed, brownish spots on the outer surface of the volva on the stem’s base.—Yang-Yang Cui and Rachel Warner
brief editors	RET

name

Amanita retenta

author

Yang-Yang Cui, Qing Cai, Zhu L. Yang in Cui et al. (2018) Fungal Diversity 91(1): 95. figs. 22h-i, 26.

name status

nomen acceptum

MycoBank nos.

825029

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
MH508541	nrITS	?	?
MH508540	nrITS	?	?
MH508545	nrITS	?	?
MH508544	nrITS	?	?
MH508542	nrITS	?	?
MH508546	nrITS	?	?
MH508543	nrITS	?	?
MH508538	nrITS	?	?
MH508539	nrITS	?	?

holotypes

HKAS 70020

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.

The following material is derived directly from the protolog of the present taxon and associated documen- tation such as sequences deposited in GenBank.

editors

RET

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