Published: Revue de Mycologie 4: 72 (1939)
Taxonomic status: This is a Hemistropharia.
Notes: Current name: Hemistropharia albocrenulata (Peck) Jacobsson & E. Larss., Mycotaxon 102: 238 (2007).
Basionym: Agaricus albocrenulatus Peck [as "Agaricus (Pholiota) albocrenulatus"] (1873)
Types: UNITED STATES: New York: Adirondack Mountains (approx. 44.1247°N, 73.8693°W, alt. approx. 1150 m a.s.l.) on mossy soil in woodland under Acacia sp., Jul. 1872, C.H. Peck (Holotype. herbarium acc. no. NYS-F-158, HJB1000534).
Diagnosis: Pileus fleshy, firm, convex or campanulate, subumbonate, viscid, rough with dark-brown or blackish floccose scales, yellowish-brown; lamellae broad, sub-distant, emarginate, white crenulate on the edge, grayish, then ferruginous; stem firm, equal or slightly tapering upward, stuffed or hollow, squamose and pallid below the evanescent ring, white and slightly furfuraceous above; spores subelliptical, .00045' x .00025'. Plant 3'-5' high, pileus 2'-3' broad, stem 3"-5" thick, Mossy base of maple trees in woods. Adirondack Mountains. July and August. Under a lens the Iamellae appear to be headed on the edge with minute milky globules.
Commentary: The species was originally described by Peck as Agaricus (Pholiota) albocrenulatus (FIG. 23A) and recombined as Hebeloma albocrenulatum by Singer (1939). Over the years this species has been the subject of much debate, including its recombination into Pholiota (Saccardo 1887), Stropharia (Kreisel 1964) and Hemipholiota (Bon 1994) and others (not listed), culminating in the publication from Jacobson and Larsson (2007), where a new monospecific genus was described to accommodate it, taking into account the results of molecular phylogenetic analyses and the observation that the taxon differs from Pholiota proper by spore shape and size and absence of chrysocystidia.
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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