Amanita praelongipes

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name

Amanita praelongipes

author

Kärcher & Contu. 1999. Riv. Micol. 42(4): 353.

name status

nomen acceptum

synonyms

≡Amanita vaginata var. elongata Kärcher. 1988. Doc. Mycol. 19(74): 53, fig. (on p. 55).

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.

460916, 135038

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
MN490677	nrITS	?18.vii.1981 R. Kärcher 18-07-81 (holotype, in herb. R. Kärcher => FR F200)	Hanss & Moreau (2020 [2017]), Fac. Pharm., Univ. Lille

holotypes

in herb. Reinhold Kärcher => FR F200

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 taxon.

pileus

from protolog: 50 - 80 (-100) mm wide, gray-brown to brownish ochre to brownish hazel, often becoming paler with time, ovoid-hemispheric at first, becoming campanulate-conic with distinct umbo, later more or less broadly convex, shiny or viscid, more or less pruinose, sometimes rugulose; context white; margin long-striate-sulcate; universal veil absent.

lamellae

from protolog: separation from stipe not described, crowded, white, rather broad, with edge concolorous and more or less crenulate; lamellulae not described.

stipe

from protolog: 150 - 230 × 10 - 20 (-25) mm, white, more or less silky, sometimes slightly grayish above, more or less flocculose below, deeply inserted in substrate (often difficult to extract without ruining stipe and/or universal veil); context at first stuffed, then quickly hollow in broad central cylinder; exannulate (per figure); universal veil as saccate volva, up to 50 mm high, moderately (ca. 3 mm) thick, membranous (per figure), bilobate, with obconic base, smooth, with exterior tinted more or less brownish ochraceous.

odor/taste

from protolog: Odor and taste not distinctive.

macrochemical
tests

from protolog: Phenol - on context, reddish brown after 5 min.

pileipellis

not described.

pileus context

not described.

lamella trama

not described.

subhymenium

not described.

basidia

from protolog: 4-sterigmate.

universal veil

from protolog: On stipe base, "exterior" layer: filamentous hyphae 2 -3 μm wide, irregularly entangled; inflated cells infrequent, scattered, langeniform or pyriform or elongate-clavate, 40 - 60 (-80) × 15 - 30 (-40) μm always isolated.

stipe context

not described.

partial veil

absent.

lamella edge tissue

from protolog: "inflated cells lacking." [Note: Since deciduous inflated cells between the developing lamella edge and the developing stipe seem to be critical to schizohymenial development of the Amanita basidiome, the assertion that they are lacking in this species should be checked. Perhaps, the authors examined lamellae from which the inflated cells had been lost.—ed.]

basidiospores

send to graphing tool

from protolog: [-/-/-] 10 - 14 (-15.5) × 10 - 14 (-15.5) μm wide, (Q = 1.0 - 1.05), smooth, inamyloid, "absolutely spherical"; apiculus well-developed; contents "without inclusions"; white in deposit. [Note: If a value of 1.05 was obtained for Q of one or more spores, then it is not the case that spores are always isodiametric. Hence, we have chosen to present the spore measurements with equal ranges of length and width to generate an approximate sporograph.—ed.]

ecology

from protolog: On clayey soil, "associated with Casatanea sativa and probably related trees (Fagus, Quercus)."

material examined

from protolog: GERMANY: HESSE—ca. Frankfurt-am-Maine, Taunus Mtns., ?18.vii.1981 R. Kärcher 18-07-81 (holotype, in herb. R. Kärcher => FR F200).

Kärcher and Contu (1999): AUSTRIA: Karnten, ca. St. Veit, s.d. R. Kärcher s.n. (in herb. Kärcher => FR F210). GERMANY: HESSE—Hochtaunus - ca. Kronberg, s.d. R. Kärcher s.n. (in herb. Kärcher => FR F201). RHEINLAND-PFALZ—Vulkaneifel - "Nerother Kopf," s.d. R. Kärcher s.n. (in herb. Kärcher => FR F202). THURINGEN—Ilm - ca. Arnstadt NSG "Hain," s.d. R. Kärcher s.n. (in herb. Kärcher => FR F203). SPAIN: CATALUÑA—Girona - Alt Empordà (Ampurdan), ca. La Vajol, s.d. R. Kärcher s.n. (in herb. Kärcher => FR F211). ITALY: SARDINIA—Prov. Sassari - S. Bachisio, Baldo, Tempio Pausania to Oschiri rd., 15.x.1998 M. Contu s.n. (?in herb. Contu), 8.xi.1998 G. Fancellu & A. Galbusera s.n. (?in herb. Contu).

discussion

While no collections other than the holotype are cited in the protolog, other stations are provided in which what is assumed to be the same species have been observed—in Austria, Germany, and Spain. Collections from these countries and from Sardinia are listed in (Kärcher and Contu 1999). Because the latter authors persisted in the idea that the species collected was related to A. malleata (under diverse names), we cannot be sure whether the non-type material is all contaxic. Revision is necessary.

This species seems very similar to Amanita pachyvolvata (Bon) Krieglst., and A. praelongispora may be a taxonomic synonym of the former name.

citations

—R. E. Tulloss

editors

RET

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