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

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name	Amanita lanosa
name status	nomen acceptum
author	Beeli
english name	"Small-Spored Woolly Lepidella"
intro	This description is based on the work of Bas (1969).
cap	The cap of Amanita lanosa is about 60 - 100 mm wide, parabolic to plano-convex or flat, mostly with an umbo, rather fleshy, with nonsulcate, appendiculate margin. The cap is at first entirely covered by a thick, pulverulent-floccose to -verrucose, dark-gray brown volva with pulverulent, pyramidal warts at the center, later breaking up into pulverulent-floccose warts to patches on a somewhat paler, slighty polished cap skin.
gills	The gills are rather crowded, free or just reaching the apex of the stem, moderately broad, and whitish. The short gills narrow gradually toward the stipe.
stem	The stem is about 80 - 200 × 5 - 15 mm, subcylindrical, hollow, moderately dark gray-brown, with slightly darker, floccose-sublanose covering especially in the upper part and dark gray-brown, pulverulent-subfelted, wart-like or rim-like remnants of the volva at the base.
odor/taste	The taste of the present species is reported to be mild.
spores	The spores measure 7 - 8 (-9) × 7 - 8 (-9) µm and are amyloid and globose (rarely subglobose). Clamps are present at bases of basidia.
discussion	This species was described from what is now the Democratic Republic of Congo. It was reportedly associated with Gilbertiodendron (=Macrolobium) dewevrei (De Wildem.) Léon. It is most similar to A. lanosula Bas, a species based on noncomformant material included in the type collection of A. lanosa. The distinctions between the two taxa listed by Bas are found on the page for A. lanosula. Bas included the present species in his stirps Chlorinosma. See A. chlorinosma (Peck) Lloyd.—R. E. Tulloss
brief editors	RET

name

Amanita lanosa

author

Beeli. 1931. Bull. Soc. Roy. Bot. Belgique 63: 107, pl. 8 (fig. 9).

name status

nomen acceptum

english name

"Small-Spored Woolly Lepidella"

synonyms

≡Aspidella lanosa (Beeli) E.-J. Gilbert. 1940. Iconogr. Mycol. (Milan) 27, suppl. (1): 79,

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.

MycoBank nos.

155945, 284327

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



No data available in table

lectotypes

lectotypifications

Bas. 1969. Persoonia 5: 456, 458.

type studies

Bas. 1969. Persoonia 5: 454, figs. 200-202.

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 from the protolog of the present species, (Beeli 1935), and (Bas 1969).

Bas (1969): Basidiomes medium to large, slender.

pileus

Bas (1969): ca. 60 - 100 mm wide, somewhat paler than universal veil, parabolic to plano-convex to planar, mostly without umbo, slightly polished; context whitish, unchanging, rather fleshy; margin nonsulcate, appendiculate; universal veil at first as thick pulverulent-floccose to pulverulent-verrucose layer, later breaking up into pulverulent-floccose warts or patches, dark gray-brown.

lamellae

Bas (1969): free or just reaching apex, rather crowded, whitish, moderately broad; lamellulae attenuate.

stipe

Bas (1969): ca. 80 - 200 × 5 - 15 mm, moderately dark gray-brown, with slightly darker floccose-sublanose covering especially in upper part; bulb submarginate to marginate, rounded to more or less pointed; context (becoming?) hollow, whitish, unchanging: exannulate per figure; universal veil as wart-like or rim-like material on bulb, dark gray-brown, pulverulent-subfelted.

odor/taste

Bas (1969): Odor not recorded. Taste mild.

macrochemical
tests

none reported.

pileipellis

Bas (1969): having a narrow, distinctly gelatinized suprapellis; filamentous hyphae 1.5 - 5 μm wide, colorless, interwoven.

pileus context

not described.

lamella trama

Bas (1969): bilateral; with "diverging elements up to about 15 μm wide," with "inflated terminal cell probably absent"....

subhymenium

Bas (1969): rather narrow, dense, distinctly ramose.

basidia

Bas (1969): 45 - 60 × 10 - 11 μm, 4-sterigmate; clamps present, difficult to demonstrate in dried material of type.

universal veil

Bas (1969): On pileus: filamentous hyphae 2 - 6 μm wide, branching, rather scanty; inflated cells dominating, globose to broadly ellipsoid, sometimes also broadly clavate or ovoid or (more rarely) elongate or inflated-branching, up to 45 × 30 μm (occasionally up to 80 × 70 μm), witn brown vacuolar pigment, terminal in irregularly disposed chains; vascular hyphae 2 - 8 μm wide, scattered. On stipe base: similar to tissue on pileus, "but with more irregularly shaped elements."

stipe context

Bas (1969): longitudinally acrophysalidic; acrophysalides large, slender, clavate.

partial veil

Bas (1969) [flocculence at stipe apex]: filamentous hyphae scarce; inflated cells rather small, mostly smaller than 60 × 15 μm, slenderly clavate or elongate-ellipsoid or coralloid or inflated-branched. [Note: Bas doesn't mention the material on the stipe apex as being a partial veil in the macroscopic description.—ed.]

lamella edge tissue

Bas (1969): inflated cells clavate, up to 45 × 25 μm, also with ellipsoid and variously shaped smaller cells at least partly in chains.

basidiospores

send to graphing tool

Bas (1969): [20/3/1] 7.0 - 8.0 (-9.0) × 7.0 - 8.0 (-9.0) μm, (Q = 1.0 - 1.05 (-1.15)), colorless to yellowish in ammonia, thin-walled, amyloid, globose, rarely subglobose, at least sometimes adaxially flattened (per figure); apiculus sublateral and cylindric (per figure), slender, rather prominent; contents often comprising one large refractive body; white in deposit.

ecology

from protolog: Terrestrial in forest of Gilbertiodendron (=Macrolobium) dewevrei (De Wildem.) Léon.

material examined

from protolog: CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], 4.xii.1928 M. Goossens 852A (lectotype, BR).

Beeli (1935): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], 4.xii.1928 M. Goossens 852A (lectotype, BR).

Bas (1969): CONGO, DEMOCRATIC REPUBLIC OF: PROV. EQUATEUR—Territoire Lisala - Binga [2°23'41" N/ 20°25'25" E, 361 m], 4.xii.1928 M. Goossens 852A (lectotype, BR).

discussion

(Bas 1969): "Amanita lanosa Beeli is based on Goossens 852. Unfortunately this rich collection appeared to be a mixture of two rather similar species. It is, however, easy to distinguish these two species by the shape of their spores, which is globose (7 - 8 × 7 - 8 μm) in the one and ellipsoid to elongate (8 - 10 × 5.5 - 6.5 μm) in the other.

"In the protologue of A. lanosa the spores are desribed as globose. Moreover, the greater part of Goossens 852 appears to consist of specimens with this character. Therefore here the name A. lanosa is applied to the species with globose spores. The one with globose spores is described as a new species under the name A. lanosula.... Consequently Goossens 852 has been split into a collection 852A, being the type of A. lanosa, a collection 852B, being the type of A. lanosula, and a collection 852C, comprising elements and fragments whereby it is difficult to decide which of the two species they belong to (chiefly because spores are lacking).

"On the water-colour drawing accompanying Goossens 852 six fruit-bodies that I have numbered I to VI from left to right, togethr with a number of globose spores are depicted. As the basal bulb in the type specimens of A. lanosa is more or less marginate and in the type specimens of A. lanosula, elongate-napiform to fusiform, I think the depicted specimens IV and VI represent typical A. lanosa and II and III typical A. lanosula; the identity of I and V is uncertain.

"Beeli's line drawings accompanying the original description of A. lanosa are slightly altered copies of, from left to right, fruitbodies II and III (probably A. lanosula) and fruitbody IV (A. lanosa), together with a few globose spores.

"The water-colour reproduced by Beeli (1935) on plateIII of the 'Flore iconographique des Champignons du Congo' represent, from left to right, fruitbody I (identity uncertain), and fruit-bodies II and III (probably A. lanosula).

"Gilbert (1941) reporduced the complete water-colour of M. Goossens. There, the left and right figures (the original fruit-bodies IV and VI) on plate 71 show typical A. lanosa and the left and right figures on plate 72 (fruitbodies III and II) probably typical A. lanosula. The centre figures on Plate 71 (V) and plate 72 (I) are the unidentified fruit-bodies.

"For a more thorough comparison of A. lanosa with A. lanosula, see...[here ].

citations

—R. E. Tulloss

editors

RET

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name	Amanita lanosa
name status	nomen acceptum
author	Beeli
english name	"Small-Spored Woolly Lepidella"

name	Amanita lanosa
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name	Amanita lanosa
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Spore data for collections
provisionally identified as: Amanita lanosa Beeli

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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