Published: Mycotaxon 49: 287 (1993)
Taxonomic status: Heterotypic synonym of H. cavipes
Types: ITALY: Lazio, Circeo - Duna (approx. 41.324°N, 13.047°E, alt. approx. 215 m a.s.l.) on calcareous, sandy soil in coastal dune under Quercus ilex, 16 Nov. 1988, L. Quadraccia (Holotype. herbarium acc. no. ROHB01313, HJB1000225; Isotype. herbarium acc. no. K(M)20802, HJB1000004).
Original diagnosis: Pileus 15-40 (-50) mm, convexus primitus incurvo margine, postice expansus, +/- centro depressus, interdum subumbilicatus, margine non parum sinuato; cuticula minute fibrillosa, subglutinosa e viscosa, margine + pruinoso, semper costato primitus subconcolor, brunneo-avellaneus margine clariore, postice manifeste discolor, centro avellaneus + fuscus, cervino-pallidus in dimidia parte, margine argillaceo-albido. Lamellae confertae, mediocriter latae, emarginatae; lamellulae sinuatae guttulas perspicuas effluentes, postice brunneo colore maculatae; subclarae, ex albidis argillaceae, acie clariore, erosa. Stipes 20-50 x 4-9 mm, rectus vel subsinuosus, solidus, subcylindraceus vel apice parum expansus, dense uno eodem modo pruinosus, plenus vel subfistulosus; albus basi albido-argillacea. Cortina abest. Caro in media pileo subtillis; alba vel albida. Odore nulle in speciminibus recenter collectis, in sectis odore nulla vel herbaceo. Sapore non raphanoideo, subamaro. Sporae 10-14 x 5.2-6.5 (-6.8) μm, fusiformes, dense minuteque verrucosae, interdum cum perisporio passim dlsiuncto, subflavae sub microscopio optico, parum nihilve dextrinoideae. Basidia 25-33 x 7.5-10 μm tetrasporica. Cheilocystldla 20-65 μm e lageniformibus ac +/- geniculatis cum apice obtuso vel vix dilatato claviformia, numquam capitata (cum apice x 5-9 μm ), ventricosa vel ad basim gradatim attenuata (x 4-9 μm), aliquando uniseptata vel biseptata. Pleurocystldia absunt. Caulocystidia cheilocystidlls paene similia, paulo longiora, interdum 1-3 septata, cylindraceo-clavata e lageniformibus, 26-70 x 5-12 m cum apice x 6-8 μm. Epicutis ex ixocute constituta valde aucta, quae quidem constat ex hyphis graci1ibus (x 2-4 μm), saepe in pileocystidia cheilocystidiis similia desinentibus, claviformia vel cylidraceo-claviformia, subtiliora (x 3-6 μm). Cutis vix manifesta. Subcutis manifesta, quamvis parum sit aucta, ex hyphenchimate hyphoideo constituta, quod quidem ex hyphis constat pigmento membranario aurantiaco-rufo zebratis. Habitat: in litoris arenis fruticibus semper virentibus confirmatis, sub coniferis (Juniperus, Pinus) et frondosis (Quercus), in litoris rarioribus silvia sabulosis sub Cisto salvifolio.
English translation: Pileus 15–40 (50) mm diam, at first convex with incurved margin then expanded, +/- depressed at the centre, sometimes subumbilicate, margin rather wavy; surface minutely fibrillose, viscid to subglutinous, margin pruinose, always ribbed; at first concolourous, hazel-brown with paler margin, then distinctly discoloured, hazel +/- dark at the centre, pale fawn in the half zone, clay-whitish on the margin. Lamellae crowded, of middle breadth, emarginate; lamellulae sinuate, beaded with limpid drops, becoming brown spotted as the spores mature; rather pale, whitish to pale argillaceous, edges paler, eroded. Stipe 20–50 × 4–9 mm, straight or subsinuate, firm, subcylindrical or s1ightly expanded at the apex, densely pruinose overall, solid or subfistulose; white, clay-whitish at the base. Cortina absent. Flesh thin at pileus centre, white or whitish. Odour not distinctive in sporocarps recent1y collected, not distinctive or herbaceous when cut. Taste not raphanoid, slightly bitter. Spores 10–14 × 5. 2–6.5 (6.8) μm, fusiform, densely and finely verrucose, at times with slightly detached perispore, light yellowish under the optical microscope, hardly or not dextrinoid at all. Basidia 25–33 × 7.5–10 μm, fourspored. Cheilocystidia 20–65 μm, lageniform and +/- geniculate, with blunt or slightly broadened apex, to clavate, never capitate (apex × 5–9 μm), ventricose or gradually tapering at base, sometimes 1–2 septate. Pleurocystidia none. Caulocystidia almost like cheilocystidia, slightly longer, sometimes 1–3 septate, lageniform to cylindrical-clavate, 26–70 × 5–12 μm, apex × 6–8 μm. Epicutis a very well developed ixocutis, made up of thin hyphae (× 2–4 μm), often ending with clavate or cylindrical-clavate pileocystidia similar to cheilocystidia but thinner (× 3–6 μm). Cutis hardly observable. Subcutis prominent, even though not well developed, formed by a hyphoid layer with reddish-orange encrusting pigment. Habitat: in coastal sand dunes with Mediterranean maquis under conifers (Juniperus, Pinus) and broadleaved trees (Quercus), in bare patches of sea-shore woodlands under Cistus salviifolius.
Commentary: We have studied the holotype and the isotype, both morphologically and molecularly. This species is: = Hebeloma cavipes Huijsman.
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