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

[print] [map]

name	Amanita roseitincta
name status	nomen acceptum
author	(Murrill) Murrill
english name	"Rose-Tinted Amanita"
synonyms	=Amanita komarekensis Dav. T. Jenkins & Vinopal
images	1. Amanita roseitincta, Texas, U.S.A. 2. Amanita roseitincta, Georgia, U.S.A. 3. Amanita roseitincta, Biloxi, Harrison Co., Mississippi, U.S.A. 4. Amanita roseitincta, Georgia, U.S.A. 5. Amanita roseitincta, Georgia, U.S.A. 6. Amanita roseitincta, Georgia, U.S.A. 7. Amanita roseitincta, Georgia, U.S.A.
intro	The odor of this species is
cap	Amanita roseitincta is a distinctive and unusual species. In the button stage, it appears to have a duplex volva. The underlayer is pinkish rusty and pulverulent. The upper layer forms warts (at arrow in original collector's drawing, above). In fact the volva is originally continuous, but the elements of the lower part are oriented along the surface of the cap and are connected to the cap, while the elements of the upper part of the tissue are aligned vertically. The color of the 30 - 70 mm wide pileus is off-white. The pyramidal warts darken quickly on exposure. All other pigments rapidly fade in sunlight.
gills	The gills are free to subdistant, crowded, and pale cream to white. The small gills are truncate.
stem	The stipe is 25 - 150 × 5 - 20 mm and has a skirt-like annulus that is pink at first (at least on the lower side) and an ellipsoid to somewhat turnip-shaped bulb.
odor/taste	The odor of this mushroom is sometimes distinctly fruity—like apricots—which is detectable when a large collection is massed together; it is not distinct in individual specimens. No clear information about taste is available.
spores	RET's spore data from collections extending from New Jersey to Texas follow: (7.6-) 8.5 - 11.8 (-14.4) × (5.1-) 6.0 - 8.2 (-10.0) µm, broadly ellipsoid to ellipsoid, occasionally elongate, inamyloid. Clamps are absent from the bases of basidia.
discussion	This species occurs from New Jersey (infrequently) to the U. S. Gulf Coast region...and perhaps to central Mexico depending on the outcome of work revising A. guzmanii (see below). Dr. Jay Justice reports it occurs as far west as southern Missouri. It, and/or a very similar species called A. guzmanii Cifuentes et al., occurs in eastern Mexico. Amanita cruzii O. K. Mill. & Lodge is a distinct, but rather similar species. It was originally described from the Dominican Republic (where it appears to be associated with pine both in plantations and in mixed woods) and is also known from an alien pine plantation in Colombia. Amanita roseitincta is associated with oak and pine. An update of this page is coming.—C. Rodríguez Caycedo and R. E. Tulloss
brief editors	RET

name

Amanita roseitincta

author

(Murrill) Murrill. 1914b. Mycologia 6: 269.

name status

nomen acceptum

english name

"Rose-Tinted Amanita"

synonyms

≡Venenarius roseitinctus Murrill. 1914a. N. Amer. Fl. 10(1): 75.

≡Amanita roseitincta ("roseo-tincta") (Murrill) Sacc. & Trotter. 1925. Syll. Fung. 23: 4. [Superfluous combination.]

non Amanita cokeri f. roseitincta (≡ Amanita eijii)

=Amanita komarekensis Dav. T. Jenkins & Vinopal. 1979. Mycotaxon 8: 177, figs. 1-2.

?=Amanita guzmanii Cifuentes, Villegas & G. Santiago. 1984. Bol. Soc. Mexicana Micol. 19: 100. [Note: Research on the status of this name is underway (Guzmán-Dávalos, pers. corresp.)—eds.]

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.

variant spellings

roseotincta

MycoBank nos.

517685, 308562, 105034 (?)

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



KC855224	nrITS-LSU	07.vi.1997 D.P. Lewis 5780 (RET 284-10)	Q. Cai, Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, China
KC855225	nrITS-LSU	10.vi.2000 Arlene R. Bessette s.n. [Tulloss 6-10-00-E] (RET 313-5)	Q. Cai, Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, China
KC855226	nrITS-LSU	s.d. L.T. Biechele s.n. [Tulloss 9-5-91-LTB1] (RET 032-7)	Q. Cai, Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, China
MT013998	nrLSU	13.vi.2001 D. P. Lewis 9107 (RET 430-3)	S. D. Russell, Purdue Univ.

holotypes

A. komarekensis—in herb. Dav. T. Jenkins, Univ. Alabama, Birmingham. Venenarius roseitinctus—NY (reported to be sterile, accompanied by colored pencil sketches and numerous original material collected nearly simultaneously with holotype by same collector).

type studies

A. roseitincta—Jenkins. 1979. Mycotaxon 10: 189.

revisions

Bas. 1969. Persoonia 5: 564. [Discussion of status]
Rodríguez Caycedo and Tulloss, herein.

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 not directly from the protolog of the present taxon or from the protolog of A. komarekensis (Jenkins & Vinopal 1976) is based upon original research by C. Rodríguez Caycedo and R. E. Tulloss.

pileus

35 - 65 mm wide, cream-white becoming beige with age, reddish where bruised, convex, becoming plano-convex, then planar with slight umbo, dry to tacky; context white, sometimes with salmon tint, up to 5 mm thick over stipe; margin moderately striate, incurved at first; universal veil appearing to have two components, as an underlying salmon to rose-pink to pinkish to pinkish beige (2.5YR 7/6 to 2.5YR 4/10 and sometimes 3.75YR 7/12 mainly at margin) detersile pulverulence sometimes in coherent patches, and as distinct detersile sordid brown pyramidal warts with somewhat striate sides.

lamellae

free to subdistant, close crowded, white to cream-white to sordid white, 5 mm broad, broadest near margin, ventricose, with pinkish fimbriate margin; lamellulae truncate, plentiful, ??.

gleba

double click in markup mode to edit.

stipe

25 - 150^- × 5 - 20 mm, cream-white reddish stains where bruised, cylindric or tapering upward, flaring at apex, with pinkish to rose-pink (2.5YR 7/6) pulverulence or fibrillose squamules near apex, with less pulverulence below partial veil; bulb subnapiform to napiform to ovoid to subglobose, 20 - 25⁺ × 18^± - 20⁺ mm; context ??, stuffed to partially stuffed to hollow; partial veil apical to superior, very thin, membranous, skirt-like, with pulverulent covering and pinkish (2.5YR 7/4, at least at first) below, pale pinkish beige to whitish and striate above, with block-like warts of pinkish beige universal veil on underside at edge, rather persistent, but often eventually evanescent; universal veil as single broken ridge or ring of blocky warts on top of bulb, 2^± mm high, pinkish-beige, ??, detersile.

odor/taste

Odor sometimes with distinctly fruity odor—like apricots—detectable when large collection massed together; mild to indistinct in individual specimens. Taste not? indistinct.

macrochemical
tests

Spot test for tyrosinase (L-tyrosine) - in aging material, instantaneously positive in lamellae and on stipe surface, positive in stipe context, not recorded for other tissues. Test voucher: Tulloss 10-26-85-B.

basidiospores

send to graphing tool

from protolog of A. komarekensis: [-/-/-] 8.2 - 9.4 (-10.2) × 5.5 - 7.0 (-7.8) μm, (Q = 1.22 - 1.56; Q = 1.38), hyaline, thin-walled, broadly ellipsoid to ellipsoid, often adaxially flattened; apiculus sublateral, cylindric; contents guttulate; color in deposit note recorded.

[336/10/7] (7.6-) 8.5 - 11.8 (-14.4) × (5.1-) 6.0 - 8.2 (-10.0) µm, (L = 9.2 - 10.9 µm; L' = 9.8 µm; W = 6.3 - 7.6 µm; W' = 7.0 µm; Q = (1.09-) 1.20 - 1.69 (-2.08); Q = 1.33 - 1.50; Q' = 1.42), hyaline, colorless, smooth, thin-walled, inamyloid, broadly ellipsoid to ellipsoid to (occasionally) elongate, often adaxially flattened, often with rather narrow ends; apiculus sublateral, cylindrical; contents ??; ?? in deposit

ecology

from protolog of A. komarekensis: Florida: In annually burned mixed forest including Pinus taeda, Liquidambar styraciflua, Cornus florida, with Quercus virginiana dominant.

Solitary to gregarious. Alabama: In dry Pinus woods. Maryland: Under Pinus in sandy soil. Mississippi: In mixed woods in sandy soil. New Jersey: In mixed forest of P. rigida, Quercus spp., etc. in sandy soil. North Carolina: Under Pinus. Texas: Under Pinus in sandy soil or under Pinus in lawn.

material examined

from protolog of A. komarekensis: U.S.A.: FLORIDA—Leon Co. - Tall Timbers Res. Stn., 7.vii.1977 J. Vinopal 40833 (holotype of A. komarekensis, TENN), 14.vii.1977 J. Vinopal 1049 (paratype of A. komarekensis, in herb. J. Vinopal).

Jenkins (1979): U.S.A.: MISSISSIPPI— Harrison Co. - Biloxi, 13.ix.1904 Mrs. F. S. Earle F 182 (holotype, ??FLAS).

U.S.A.: MARYLAND—Worcester Co. - Milburn Landing St. Pk. [38.1284° N/ 75.4942° W, 3 m], s.d. L. T. Biechele s.n. [R. E. Tulloss 9-5-91-LTB1] (RET 032-7). MISSISSIPPI—Harrison Co. - Biloxi, 13.ix.1904 Mrs. F. S. Earle F 182 (holotype, NY). NEW JERSEY—Atlantic Co. - Oceanville, Edwin B. Forsythe Nat. Wildlife Refuge, Brigantine Div. [39°27’53" N/ 74°26’59" W, 7 m], 18.viii.1984 D. C. Tulloss s.n. [Tulloss 8-18-84-G] (RET 206-4). NORTH CAROLINA—Unkn. Co. - ca. border of Orange and Durham Cos., ca. Chapel Hill, viii.1985 Bill Burk et al. s.n. (in herb. David T. Jenkins, Univ. Alabama, Birmingham; photos in RET). TEXAS—Hardin Co. - 16 km N of Silsbee, Big Thicket Nat. Preserve, Jack Gore Baygall Unit, 17.vi.1981 D. P. Lewis 2595 (F; RET 013-3), 10.vi.2000 Arlene R. Bessette s.n. [Tulloss 6-10-00-E] (RET 313-5); Silsbee, 16.viii.1984 D. P. Lewis 3720 (F; RET 012-3), 26.x.1985 Jay Justice s.n. [Tulloss 10-26-85-B] (RET 132-5); Saratoga, Big Thicket Nat. Preserve, Lance Rosier Unit, Teel Rd. at Cypress Swamp [30º 15.860’ N/ 94º 30.751’ W], 13.vi.2001 D. P. Lewis 9107 (RET 430-3, nrLSU seq'd.). San Jacinto Co. - Sam Houston Nat. For., Big Creek Scenic Area, 10.vii.1982 D. P. Lewis 3167 (F; RET 013-4). Tyler Co. - Forest Lk. Experim. For., 7.vi.1997 D. P. Lewis 5780 (F?; RET 284-10).

[Note: Additional original material including colored sketches are in NY; some may be from Alabama as well as from Mississippi.

Note: There is very likely to be material of this species from Alabama in herb. Dr. David T. Jenkins, Univ. Alabama, Birmingham.

Note: Additional collections in SFSU, H. D. Thiers’ numbers 6112, 6134, 6248, 6583, 6763, 7138, 7235.]

discussion

Note: Dr. Nancy Weber (pers. corresp.) called our attention to water colors and additional collections of V. roseitinctus deposited in NY (see discussion of holotypes) and provided unpublished observations. See the photographs of the present species in (Weber and A. H. Smith. 1985. Field Guide S. Mushr.: 156-157).

citations

—C. Rodríguez Caycedo and R. E. Tulloss

editors

RET

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

name	Amanita roseitincta
name status	nomen acceptum
author	(Murrill) Murrill
english name	"Rose-Tinted Amanita"
images	1. Amanita roseitincta, Texas, U.S.A. 2. Amanita roseitincta, Georgia, U.S.A. 3. Amanita roseitincta, Biloxi, Harrison Co., Mississippi, U.S.A. 4. Amanita roseitincta, Georgia, U.S.A. 5. Amanita roseitincta, Georgia, U.S.A. 6. Amanita roseitincta, Georgia, U.S.A. 7. Amanita roseitincta, Georgia, U.S.A.
photo	RET - (1) Texas, U.S.A. Chris Matherly (2, 4-7) Georgia, U.S.A.
drawing	Member of Earle family - (3) same date as holotype collection, Biloxi, Harrison County, Mississippi, U.S.A.; drawing photographed by permission of the New York Botanical Garden.
watercolor

name	Amanita roseitincta
bottom links	[ Keys & Checklists ] [ New Jersey & region list ]

name	Amanita roseitincta
bottom links	[ Keys & Checklists ] [ New Jersey & region list ]

Spore data for collections
provisionally identified as: Amanita roseitincta (Murrill) Murrill

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

[top]