Published: Q. Jl Fla Acad. Sci. 8 (2): 185 (1945)
Taxonomic status: This is a Cortinarius.
Types: UNITED STATES: Florida: Gainesville, Alachua Co. (approx. 29.6516°N, 82.3248°W, alt. approx. 50 m a.s.l.) on grassy soil in lawn under Quercus sp., 11 Jan. 1945, W.A. Murrill (Holotype. herbarium acc. no. FLAS-F-17505, HJB1000400).
Original diagnosis: Pileo convexo-subplano, gregario, 5 cm lato, glabro, albido, praefelleo; lamellis sinuatis, confertis, integris, pallidis; sporis ellipsoideis, levibus, 10-11 X 5-6 μ: stipite albo, glabro, 2.5 X 1 cm.
English translation: Pileus convex to subapplanate, gregarious, 5 cm broad, smooth, whitish, very bitter; lamellae sinuate, crowded, even, pale; spores ellipsoid, smooth, 10-11 x 5-6 μ; stipe white, smooth, 2.5 x 1 cm.
Commentary: The spores are elliptical and strongly ornamented (7.5–9.5 × 4.5–6 µm). No cheilocystidia or pleurocystidia were observed. Hesler (in his 1977 unpublished manuscript on North American species of Hebeloma) describes cheilocystidia as clavate, sparse and inconspicuous; within this study none were found despite much examination. Further, the spores are unlike any known Hebeloma. Based on the lack of cystidia and the type of spores, it is concluded that this is a Cortinarius, as was (to our knowledge) first suggested by D.E. Stuntz in his herbarium note of 1976. Unfortunately, it was not possible to generate any DNA sequence data. Murrill described numerous taxa from Gainesville, Florida. We consider it likely that the same species was described by Murrill under a different name before or after. Hebeloma praefelleum reminded Murrill (1945) of H. pallidifolium (Is. pallidifolium) and C. lacticeps, both published by him, in the same publication respectively in Murrill (1945 [“1944”]). Cortinarius lacticeps collections of Murrill exist from Gainesville under laurel oak, although the host is not mentioned in the type metadata. Murrill considered C. lacticeps a common species in the area. Coloration and spore size is described for C. lacticeps are similar to H. praefelleum.
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
All related names: aberrans | aeruginosum | affine | agglutinatum | aggregatum | alabamense | alachuanum | albiceps | albidocortinatum | albidocortinatus | albipes | albocolossum | albocrenulatum | albocrenulatus | alvarense | amarellum | angustifolium | angustifolius | angustilamellata | angustispermum | angustisporium | apolectum | apolectus | appendiculatum | aprile | arenicolor | arenosum | argentinum | ascophorus | asperulatum | atrifulvifolium | atrobrunneum | atrosanguineum | augusti | aurantiellum | austroamericanum | bakeri | barrowsii | bellotianus | bicoloratum | bingolense | birra | boulderense | broadwayi | bruchetii | brunneifolium | brunneodiscum | brunneomaculatum | bryogenes | bubalinum | bulbaceum | bulbosum | busporus | caespitosum | californicum | calvinii | calyptrosporum | canariense | candidipes | capniocephalum | capniocephalus | catervarium | catervarius | cerussatum | ceskae | chapmaniae | chlorophyllum | cinchonense | cinereostipes | cinereum | claviceps | 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