Published: N. Amer. Fl. 10 (3): 224 (1917)
Taxonomic status: We have not been able to unambiguously determine the current genus of this name.
Types: UNITED STATES: Oregon: Glen Brook (approx. 44.3139°N, 123.4053°W, alt. approx. 100 m a.s.l.) on litter in coniferous woodland under Abies sp. and Quercus sp., 7 Nov. 1911, W.A. Murrill (772) (Holotype. herbarium acc. no. NY 814856, HJB1000304; Isotype. herbarium acc. no. WTU-F-039673, HJB1000303).
Diagnosis: Pileus convex, not fully expanding, not umbonate, solitary, 3 cm. broad; surface smooth, glabrous, extremely viscid, aeruginous, margin involute, broadly overhanging, concolorous; lamellae adnate, with decurrent tooth, very broad, subtriangular, not crowded, white to pale yellowish, entire and concolorous on the edges; spores ovoid, smooth, pale-yellow under the microscope, 8-9 X 6 μ; stipe equal, solid, fleshy, dry, glabrous at the apex, coarsely squamose below, caesious-caeruleous, 4 cm. long, 7 min. thick.
Commentary: Unfortunately, the specimen box for the holotype is empty and already was in 1972 when Hesler attempted to examine the material. However, based on the protologue, in particular the greenish-bluish ("aeruginosus") colour of the pileus, white to pale yellowish lamellae and the coarsely squamose, greyish-blue to bluish-greenish ("caesious-caeruleus") stipe this does not appear to be a Hebeloma species. Murrill's hand-written herbarium slip, with his field notes and the drawing of a basidiome, reveals his great uncertainty as to genus ascription: "Tricholoma (?) Armillaria (?) (could be this genus)". We were able to locate material at WTU that appears to be authentic type material, presumably loaned from NY at some point and which could be regarded as an isotype. This material has been analyzed. The spores are ovoid, smooth, thick walled and with a distinct germ pore. They are on ave. 9.6 × 5.5 µm with ave. Q 1.76. The cheilocystidia are clavate, often utriform and stipitate with occasional interspersed chrysocystidia; pleurocystidia modified as chrysocystidia were also present. This is not a Hebeloma.
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 | clavuligera | clavuligerum | clavulipes | clavus | coarctatum | coarctatus | collariatum | colossus | commune | communis | coniferarum | coprophilum | corrugatum | cortinarioides | crassicystidiatum | crassipes | crassum | crassus | cremeopallidum | cremeum | crustuliniformis | cubense | dasypus | decoratus | deflectens | denigricans | diffracta | diffractum | diffractus | discomorbida | discomorbidus | dissiliens | domardiana | domardianum | dryophilum | dunense | earlei | edule | edulis | edurum | elata | elatellum | elatellus | elatum | elatus | ellipsoideosporium | erebia | erysibodes | evensoniae | exalbidum | exalbidus | exiguifolium | fagicola | fallax | farinaceum | fastibile | fastibilis | favrei | felipponei | felleum | fimbriatus | fimicola | firma | firmum | firmus | flaccidum | flammuloides | flavescens | flavidifolia | flavum | flexuosipes | floridanum | foedatum | fragilior | fragilipes | fragilius | fragrans | fragrantissimum | frenchii | funariophilum | fuscodiscum | fuscodiscus | fuscostipes | fusiformiradicatum | fusiformiradicatus | fusipes | gigaspermum | gigaspora | gigasporum | gigasporus | glabrescens | glutinosa | glutinosum | glutinosus | gomezii | gracile | gregariiforme | gregarium | griseocanescens | griseocanum | griseoscabrosum | griseoscabrosus | griseovelatum | griseum | griseus | groegeri | helvolescens | hemisphaericum | herrmanniae | hesleri | hetieri | holophaea | hormanii | hortense | horticola | hudsoniatum | huijsmaniana | humile | humosum | hydrocybeoides | hygrophilum | idahoense | igneum | ignobile | ignobilis | illicitum | illicitus | imbecillis | incognitum | indecisum | indica | infidum | infidus | insigne | ischnostylus | juneauense | kalmicola | kammala | kanouseae | kauffmanii | kemptoniae | khogianum | kirtonii | kuehneri | lacteocoffeatum | laevatum | laevatus | lamelliconfertum | latericolor | laterinus | lateritium | latifolium | latisporum | laursenii | levisporum | levyanum | lignicolum | limacinum | lindrothii | litoreum | littenii | longicauda | longicaudum | longicaudus | longisporum | lubriciceps | lucidum | lugens | lundqvistii | luteobrunneum | lutescentipes | luteum | macrosporum | maderaspatana | magnimamma | majale | malenconii | mammillatum | mammosum | maritinum | medianum | medianus | mediterranea | mediterraneum | megacarpum | mentiens | mesophaea | mesophaeus | micropyramis | microspora | microsporum | milleri | miserum | mitrata | mitratum | mitratus | montanum | montanus | moseri | mussiva | mussivum | mussivus | mutatum | mutatus | naucorioides | naufragum | naufragus | nauseosus | neerlandica | nigricans | nigromaculatum | nudipes | oblongisporum | obscurum | occidentale | ochraceum | ochroalbidum | octavii | oculatum | odini | odoratissimus | odoratum | olidum | olidus | ollaliense | oregonense | oreophilum | ossa | pallescens | pallida | pallidifolium | pallidoargillaceum | pallidoluctuosum | pallidomarginatum | pallidomarginatus | pallidum | palustre | pamphiliense | parvifructum | parvifructus | patriciae | peckii | perangustisporium | perfarinaceum | perigoense | permollis | perpallidum | perplexum | petiginosum | petiginosus | petrakii | piceicola | pinetorum | pitkinense | platense | polare | politum | porcatosporum | praecaespitosum | praecox | praefarinaceum | praefelleum | praefinitum | praefinitus | praelatifolium | praeviscidum | proletaria | proximum | psammicola | psamminum | psamminus | pseudofastibile | pseudomesophaeum | pseudopunctatum | pseudostrophosum | pudica | pumiloides | punctata | punctatiforme | punctatum | punctatus | pyrophilum | pyrrholepidum | pyrrholepis | queletii | radicatum | radicatus | radicosa | radicosus | remyi | repandum | repandus | riparium | rivulosum | robustum | ruber | rubrofuscum | rubrum | rufosporum | salmonense | sambucinum | sambucinus | sanjuanense | sarcophyllus | scabella | scabellum | senatum | senescens | sericipes | siegelii | siennaecolor | simile | sinapiolens | sinuosa | sinuosum | sinuosus | smithii | sociale | solheimii | sordidulus | sordidum | splendens | spoliatum | spoliatus | squamulosum | stanleyense | stellatosporum | stellatosporus | stenocystis | sterile | sterilis | sterlingii | strophosum | strophosus | suaveolens | subannulatum | subargillaceum | subboreale | subcaespitosum | subcapitatum | subcollariatum | subcollariatus | subfastigiatum | subhepaticum | subincarnatum | sublamellatum | submelinoides | subochracea | subochraceum | subochraceus | subplatense | subrimosum | subrubescens | subsacchariolens | subsaponaceum | subsaponaceus | subscambum | subscambus | substrophosum | subtestaceum | subtestaceus | subumbrinum | subvatricosoides | subvictoriense | subviolaceum | subzonatum | subzonatus | sulcatum | sulcatus | syrjensis | sztoczekii | tenuifolium | termitaria | testacea | testaceum | testaceus | texanum | thomasianum | thomasianus | tomentosum | tomoeae | tortuosum | tortuosus | tottenii | trachysporum | trinidadense | truncatum | truncatus | tumidulum | tumidulus | umbellatum | urbanicola | utahense | vatricosa | vatricosoides | vatricosum | vatricosus | vejlense | velenovskyi | venifer | veniferum | vernale | verrucispora | verruculosum | versipelle | versipellis | victoriae | vinaceogriseum | vinaceoumbrinum | violascens | virgatum | viscidissima | viscidissimus | weberi | wells-kemptoniae | wellsiae | westraliense | xerophilum | zsigmondyi