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

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name	Amanita roseolamellata
name status	nomen acceptum
author	A. E. Wood
english name	"Wood's Pink-Gilled Slender Caesar"
images	1. Amanita roseolamellata, Little Hartley, Blue Mountains, New South Wales, Australia. 2. Amanita roseolamellata, Little Hartley, Blue Mountains, New South Wales, Australia. 3. Amanita roseolamellata, Little Hartley, Blue Mountains, New South Wales, Australia. 4. Amanita roseolamellata, Little Hartley, Blue Mountains, New South Wales, Australia.
intro	The following is largely based on the original description (Wood 1997).
cap	The cap of Amanita roseolamellata is up to 100 mm wide, pallid gray to mouse gray, rounded convex to flattened convex, finally plane, smooth dry, with a striate margin (Wood's illustration shows the striations as rather short). The volval remains are often absent; when present, volva remains are flat, thick, membranous scales, pale dull cream. The flesh is extremely thin at the margin.
gills	The gills are narrowly adnate to free, thin or a little thick, fairly crowded, pale pink to shell pink, with a slightly paler, occasionally slightly darker edge. The short gills are present in at least one or two series.
stem	The stem is up to 150 × 15 mm, cylindric, smooth, white with vague pink tint. The ring is membranous, skirt-like, thin, off white to pallid pinkish, striate above, often collapsing, and sometimes disappearing. Shown as rather narrow in Wood's illustration. The base is not swollen or only slightly so. The saccate volva is large, white, membranous, and persistent.
spores	The spores measure (8.5-) 9.0 - 12.1 (-13.4) × (5.9-) 6.1 - 8.5 (-9.0) μm and are ellipsoid to elongate and inamyloid. Clamps are present at bases of basidia.
discussion	Wood describes the mushroom as occurring in sclerophyll forests and "tall open forests" from the stated of New South Wales, Australia. A sclerophyll forest in the Australian bush is a forest of hard-leaved plants including Eucalyptus in the overstory (wikipedia). The reader may wish to compare this species to A. incarnatifolia Zhu L. Yang. This species is to be placed in stirps Hemibapha (see Amanita hemibapha (Berk. & Broome) Sacc.)—R. E. Tulloss and L. Possiel
brief editors	RET

name

Amanita roseolamellata

author

A. E. Wood. 1997. Austral. Syst. Bot. 10: 751, fig. 15(a-e).

name status

nomen acceptum

english name

"Wood's Pink-Gilled Slender Caesar"

MycoBank nos.

443186

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
KT006767	nrLSU	26.iii.2011 Lucy Albertella s.n. (RET 473-4)	L. V. Kudzma, Annandale, NJ
KT006768	nrLSU	2.iv.2011 L. Albertella s.n. (RET 474-6)	L. V. Kudzma, Annandale, NJ
KP866165	nrITS	2.iv.2011 L. Albertella s.n. (RET 474-6)	L. V. Kudzma, Annandale, NJ
KP866166	nrITS	18.ii.2012 L. Albertella s.n. (RET 497-5)	L. V. Kudzma, Annandale, NJ
KP866164	nrITS	26.iii.2011 Lucy Albertella s.n.(RET 473-4)	L. V. Kudzma, Annandale, NJ
MK277561	nrLSU	1.iii.2013 L. Albertella s.n. (RET 562-10)	L. Nagy, Agaricales Diversification, Szeged Univ.
KF877163	tef1	26.iv.2011 L. Albertella Amanita7 (RET 476-4)	S. Sanchez et al., (direct deposit), Roy. Ontario Mus., Toronto
KF877278	nrLSU	26.iv.2011 L. Albertella Amanita7 (RET 476-4)	S. Sanchez et al., (direct deposit), Roy. Ontario Mus., Toronto

holotypes

UNSW

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 based entirely on the protolog of this species, which does not meet contemporary standards for Amanita taxonomy.

pileus

protolog: up to 100 mm wide, pallid grey to mouse grey (11-14B3-4; 10YR 7/4), rounded convex to flat convex and finally plane, smooth dry; context not recorded; margin pellucid-striate; universal veil absent or present as flat "thick" membranous patch, pale dull cream.

RET: in addition, sometimes white.

lamellae

protolog: narrowly adnate to free, fairly crowded, pale pink to shell pink, with edge paler or occasionally a bit "darker," "thin or a little thick"; lamellulae in "one or two series."

RET: narrowly adnatae to free, close, from very pale orangish white to off-white in mass, in side view from pale orangish white to cream in side view and drying to 5A2-3 or closer to 6A3 than 6A2 or Pale Pinkish Buff (??) or closer to Pale Salmon Color (??) than to Seashell Pink (??) or lighter and brighter than Salmon Buff, broadest near cap margin (judging from exsiccata); lamellulae of very diverse lengths, common, unevenly distributed, not between every pair of lamellae, truncate to rounded truncate to attenuate (the longest ones), sometimes anastomosing with lamellae.

stipe

protolog: up to 150 × 15 mm, equal, smooth, "white with vague pink hues"; context not recorded; partial veil "membranous, pendulous, firm, off white to pallid pinkish, striate above, sometimes reduced or apparently absent"; universal veil as white saccate volva, membranous, persistent, "large." [Note: the volval sac is not proportionately large in Wood's illustration or in recently collected material—especially in comparison to the saccate universal veils of other species of sect. Caesareae.—ed.]

odor/taste

not recorded.

macrochemical
tests

none recorded.

subhymenium

from protolog: .

basidia

protolog: 45 - 60 × 10 - 13 μm; clamps "infrequent" to "somewhat common," to "rare."

universal veil

protolog: From patch on pileus: comprising "almost only" filamentous hyphae 3 - 5 μm wide; inflated cells few, "66 - 72" μm [long?].

lamella edge tissue

protolog: with [inflated—ed.] cells "fairly common," clavate to broadly clavate, 30 - 42 × 13 - 24 μm. [Note: Since the inflated cells of the lamella edge tissue form a layer that is continuous at the time they facilitate separation of lamellae edges from the partial veil, it may seem odd to say they are "fairly common." This phrase probably indicates that Wood observed the gill edges of mature material when many of the cells in question had collapsed and/or fallen away or that he was not aware of Amanita basidiome ontogeny.—ed.]

RET: sterile.

basidiospores

send to graphing tool

protolog: (9.6-) 9.9 - 12.6 × 6.3 - 9.0 μm, inamyloid, ellipsoid, infrequently elongate. [Note: Data provided is not sufficient to permit generation of a sporograph. Wood used the variable "Q" in a way incompatible with all other authors.—ed.]

composite of data from all material revised by RET: [159/8/8] (8.5-) 9.5 - 12.8 (-16.2) × (5.9-) 6.3 - 8.5 (-9.6) μm, (L = 10.4 - 12.1 μm; L' = 11.1 μm; W = 6.8 - 7.8 μm; W' = 7.3 μm; Q = (1.28-) 1.33 - 1.77 (-2.0); Q = 1.39 - 1.68; Q' = 1.53), hyaline, colorless, smooth, thin-walled, inamyloid, ellipsoid to elongate, often adaxially flattened; apiculus sublateral, cylindric, rather robust; contents dominantly monoguttulate with plentiful small granules; white in deposit.

ecology

protolog: In sclerophyll forest.

RET: In open area with Eucalyptus.

material examined

protolog: AUSTRALIA: NEW SOUTH WALES—Unkn. LGA - Dungong, Chichester St. For., 15.iv.1989 A. E. Wood et al. s.n. (paratype, UNSW 89/23); Mt. Wilson, 21.iii.1982 A. M. Young s.n. (paratype, in herb. Young 575); Mullumbimby, Nullum St. For., 19.iii.1983 J. J. Bruhl s.n. (paratype, UNSW 83/231); Watagan St. For., Wyong, 11.iv.1983 A. M. Young et al. s.n. (paratype, UNSW 83/390), 20.iv.1988 A. E. Wood & F. K. Taeker s.n. (holotype, UNSW 88/51); Wentworth Falls, 31.i.1981 A. M. Young s.n. (paratype, in herb. Young 497). QUEENSLAND—Unkn. LGA - Blackbutt, 27.iii.1989 A. M. Young s.n. (paratype, in herb. Young 1301).

AUSTRALIA: NEW SOUTH WALES—City of Lithgow - Blue Mountains, Little Hartley [33°33'35.63" S/ 150°12'07.99" E, 820 m], 26.iii.2011 Lucy Albertella s.n. [mushroomobserver.org #64713] (RET 473-3), s.n. [mushroomobserver.org #64714] (RET 473-4, white-capped variant—nrITS & nrLSU seq'd.), 2.iv.2011 L. Albertella s.n. [mushroomobserver.org #65018] (RET 474-6, nrITS & nrLSU seq'd.), 2.iv.2011 Lucy Albertella s.n. [mushroomobserver.org #65012] (RET 474-7), 3.iv.2011 L. Albertella Front1b [mushroomobserver.org #70704] (RET 474-9), Front4b [mushroomobserver.org #65145] (RET 475-6), Front5 (RET 475-1), 26.iv.2011 L. Albertella Amanita7 (RET 476-4), 10.xii.2011 L. Albertella s.n. [mushroomobserver.org #84369] (RET 495-5), 11.xii.2011 L. Albertella s.n. [mushroomobserver.org #84442] (RET 496-1), 18.ii.2012 L. Albertella s.n. [mushroomobserver.org #87969] (RET 497-4), s.n. [mushroomobserver.org #87971] (RET 497-5, nrITS seq'd.), 1.iii.2013 L. Albertella s.n. [mushroomobserver.org #129737] (RET 562-10, nrLSU seq'd.), 2.iii.2013 L. Albertella s.n. [mushroomobserver.org #129780] (RET 563-6).

discussion

t.b.d.

The present species is one of those recently treated in a phylogeographic study of the Caesareae (Sanchez et al. 2014). Sequences from material treated on this page appeared in this publication.

In Gilbert's Amanitaceae (1940 & 1941), Tab. 23 is said to illustrate A. umbrinella. It is noteworthy that the basidiome on the left differs considerably from the one on the right. The one on the right has a distinctly membranous universal veil leaving a robust calyptra on the pileus. It also has pinkish gills and an apparently totally elongating stipe and a saccate volva. It is possible that the basidiome could indicate a confusion in the original description of A. umbrinella. It seem plausible that the descriptions of both A. umbrinella and A. bambra may have included one or more additional, recognizable taxa; for example, the present species in sect. Caesareaae and others in sect. Amanita such as A. murinoflammeum and Amanita ??.

There is quite a range of cap color included in the original description.

citations

—R. E. Tulloss

editors

RET

Information to support the viewer in reading the content of "technical" tabs can be found here.

Spore data for collections
provisionally identified as: Amanita roseolamellata A. E. Wood

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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name	Amanita roseolamellata
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