Published: Syll. Fung. 11 (1-7): 55 (1895)
Taxonomic status: Heterotypic synonym of H. ischnostylum
Basionym: Agaricus laevatus Britzelm. (1893).
Types: Not designated. Descibed fromgermany, Bavaria, in heathland.
Original diagnosis: Laevatus. B.; Spst. schmutzig gelb; Sp. 9, 11: 5; L. angewachsen, weisslich ockergelb; H. matt, sich aufschuppend, und, wie der St., weisslich-ockergelb; von fast angenehmen Geruch; dem A. diffractus Kalchbr. nicht unähnlich; Herbst, Heiden.
English translation: A. laevatus. B.; Spore print sordid yellow; Sp 9–11 × 5; lamellae adnate, whitish ochraceous; pileus dull, breaking up in squamules, and, like the stipe, whitish-ochraceous; with almost pleasant odour; similar to Agaricus diffractus Kalchbr.; autumn, in heathland.
Commentary: Agaricus laevatus is described and illustrated with a matt pileus becoming scaly, a tapering stipe, an almost pleasant odour and spores of 9–11 × 5 µm, growing in heathland. In Hebeloma, a matt and scaly pileus is known from H. odoratissimum (Britzelm.) Sacc., H. fusisporum Gröger & Zschiesch. and H. ischnostylum (Cooke) Sacc., three species that may be also interpreted as having a pleasant odour. Hebeloma odoratissimum has much broader spores and is not likely to occur in heathland. Hebeloma fusisporum may occur with Salix on poor soil, but it does also have broader spores. However, H. ischnostylum, which may also occur with Salix on poor soils, does have narrower spores and as a rule small basidiomes. The icon (fg. 382) also fits this taxon. We conclude that this is: = Hebeloma ischnostylum (Cooke) Sacc.
All current species: aanenii | adherens | aestivale | albidulum | alboerumpens | albomarginatum | album | alpinicola | alpinum | ambustiterranum | aminophilum | ammophilum | angelesiense | angustilamellatum | anthracophilum | arcticum | asperosporum | aurantioumbrinum | australe | avellaneum | bellotianum | birrus | bulbiferum | catalaunicum | caulocystidiosum | cavipes | celatum | cinnamomeum | circinans | cistophilum | citrisporum | cohaerens | colvinii | crustuliniforme | cylindrosporum | danicum | discomorbidum | duracinoides | eburneum | echinosporum | erebium | erumpens | excedens | flavidifolium | fuscatum | fusisporum | geminatum | grandisporum | griseopruinatum | harperi | helodes | hiemale | ifeleletorum | immutabile | incarnatulum | indicum | ingratum | ischnostylum | islandicum | kelloggense | lactariolens | laetitiae | laterinum | leucosarx | limbatum | lindae | louiseae | luchuense | luteicystidiatum | lutense | mackinawense | magnicystidiatum | marginatulum | matritense | mediorufum | melleum | mesophaeum | minus | monticola | nanum | nauseosum | naviculosporum | neurophyllum | nigellum | nitidum | nothofagetorum | odoratissimum | olympianum | pallidolabiatum | paludicola | parcivelum | parvicystidiatum | parvisporum | pascuense | perexiguum | plesiocistum | populinum | porphyrosporum | praeolidum | psammophilum | pseudoamarescens | pseudofragilipes | pubescens | pumilum | pungens | pusillum | quercetorum | radicans | radicosoides | radicosum | rostratum | sacchariolens | sagarae | salicicola | sarcophyllum | serratum | sinapizans | sordescens | sordidulum | spetsbergense | sporadicum | subaustrale | subconcolor | subfastibile | subtortum | syrjense | theobrominum | vaccinum | velatum | velutipes | vesterholtii | victoriense | vinosophyllum | viscidissimum | youngii
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