Entoloma reginae (Basidiomycetes, Agaricales), a new species from the Netherlands PDF
Preview Entoloma reginae (Basidiomycetes, Agaricales), a new species from the Netherlands
BLUMEA 41 (1996) 7-9 Entolomareginae (Basidiomycetes, Agaricales), a new species from the Netherlands Machiel+E. Noordeloos Rijksherbarium/Hortus Botanicus,Leiden,TheNetherlands INTRODUCTION Theknowledge ofthemacrofungi (mushrooms andtoadstools) inEurope, including theNetherlands, is stillfarfrom complete. During ourstudies on this groupofor- ganisms in theNetherlandsandadjacent Belgium and Germany whilepreparing a critical identificationwork, theFloraagaricina neerlandica, a fairlylarge numberof newspecies hasbeen discovered, and alot morehas becomeknown onthe varia- bility, distributionandecology oftheabout2,000 otherspecies thatwill eventually be includedin this Flora. Inthe period 1987-1996four volumes havebeen com- pleted ofthisstandard work (Baset al., 1988, 1990,1995,1996), three are in prepa- ration, andwe hope thatearly inthetwenty-first century, the setof 10volumeswill befinished.Thepresentpaperdealswith a very strikinglittleEntolomaspecies re- cently discoveredinDiever, provinceofDrenthe, theNetherlands. Entolomareginae Noordel.& Chrispijn, spec. nov. Pileus ad 10mmlatus,convexus,plicatus, haud distinctehygrophanusnectranslucido-stria- tus,pallidegriseo-brunneus,totomicaceo-pruinosulus.Lamellae arcuato-decurrentes,reduc- tae, venosae,albeae demum pallideroseae.Stipes 20-30x 1 mm,cylindraceus, hyalinus, albidus,ad apicempruinosus.Sporae8.0-10.0 x 7.0-8.5 pm,Q= 1.0-1.1-1.25,(sub)iso- diametricae,5-7-angulatae,crassi-tunicatae. Basidia 28-40x9-13 pm,4-sporigera,fibu- lata. Acies lamellarum fertilis.Cystidia desunt.Pileipellisecutis hyphis 3.0-9.0 pm latis constituis pigmentobrunneo incrustatovel intracelluloso formata. Stipitipelliscutishyphis cylindraceis, 4.0-7.0 pm latis constituis. Caulocystidia numerosa20-40x 2.0-7.0 pm, cylindraceavel clavata. Fibulae abundantes. Habitatin pratis. —Holotypus:R. Chrispijn, 9-VII-1994, 'Diever,prov. Drenthe,Netherlands' (L). Pileusc. 10mm broadconvex withsomewhatplicate, straight margin, not distinctly hygrophanous, not translucently striate, pale greyish brown, finely micaceous-sub- pruinose all over. Lamellae, L =up to 16, arcuate-decurrent, vein-like, whitish to very pale pink withentire, concolorousedge. Stipe 20-30by 1 mm, cylindrical, hyaline, white, whitepruinose inapical part. Spores 8.0-10.0 x 7.0-8.5pm, Q = 1.0-1.1-1.25, (sub)isodiametrical, 5-7- angled in side-viewwith ratherthickwalls.Basidia28-40 by 9-13 pm, 4-spored, clamped. Lamellaedge fertile.Cystidia absent. Hymenophoral tramaregular, made upofrather short, inflatedelements, 40-100by 9-15 pm. Pileipellis a cutis with someascending terminalelements,madeup ofcylindrical, 3.0-9.0pm widehyphae withsome clavateterminalelements.Pigment brown, membranal, sometimesfinely incrusting and intracellular, sometimesin theformofsmallgranules. Stipitipellis a 8 BLUMEA Vol. 41,No. 1, 1996 Entoloma reginaeNoordel. & Chrispijn. Habit,spores and basidia. All drawn from the holotype. Bar= 10mmand 10µm,respectively. cutis ofnarrow, cylindrical, 4.0-7.0pm wide hyphae. Caulocystidia numerous at apexofstipe, 20-40by 2.0-7.0pm,cylindrical to clavate, atveryapexmixedwith fertilebasidia. Clamp-connections numerous. Etymology —Namedtocommemorate theopening ofthe VanSteenisBuilding by HerMajesty Queen BeatrixonJune 11, 1996. Distribution—Sofaronly knownfrom thetypelocality. Habitat—Single ingrassalong cycling path. Vernacularname—Koninginnesatijnzwam (Dutch). Note— Entolomareginae has somevery unusualfeaturesthatmakeitwell worth publishing as anewspecies, although thetypecollectionconsists ofonly two speci- mens. Itcannot benamedwiththekey intheFloraagaricinaneerlandica(Noordeloos in Bas etal., 1988)nor doesitfigure intherecent European monograph ofthegenus (Noordeloos, 1992). Macroscopically Entolomareginae isratheraberrant withits venose, decurrentlamellaeandopaque, somewhatpruinose, slightly plicate pileus, reminding ofa Delicatulaspecies. Microscopically itmustbe ranged insubgenus Nolaneaon account ofthe relatively simple pileipellis type. The opaquepileus re- mindsofEntolomanitens,whichhas similarspores,butmore distinctly pigmented basidiocarps and greyishpink, well-developed lamellae. Collectionexamined.—THENETHERLANDS.Prov.Drenthe,alongcycling pathDiever-Hoeken- brink, 9 July 1994,R. Chrispijn (L). M.E.Noordeloos: Entoloma reginae, spec. Nov. 9 REFERENCES Bas,C.,Th.W.Kuyper, M.E.Noordeloos & E.C.Vellinga(eds.). 1988.Floraagaricinaneerlandica, vol. 1.Entolomataceae. Balkema,Rotterdam-Brookfield. Bas,C., Th.W.Kuyper,M.E.Noordeloos & E.C.Vellinga(eds.). 1990.Flora agaricinaneerlandica, vol. 2.Pleurotaceae,Pluteaceae,Tricholomataceae 1.Balkema,Rotterdam-Brookfield. Bas, C., Th.W.Kuyper, M.E.Noordeloos & E.C.Vellinga(eds.). 1995.Flora agaricinaneerlandica, vol. 3.Tricholomataceae 2.Balkema,Rotterdam-Brookfield. Bas,C., Th.W.Kuyper, M.E.Noordeloos &E.C.Vellinga(eds.). 1996.Floraagaricinaneerlandica, vol. 4.Strophariaceae,Tricholomataceae 3.Balkema,Rotterdam-Brookfield. Noordeloos. M.E.(1992).Entoloma s.l.In:M.Candusso (ed.),FunghiEuropaei,vol. 5.Giovanna Biella,Saronno.
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