Psathyrella romseyensis Kits van Wav.

Diagnosis de la fuente: PERSOONIA - A MYCOLOGICAL JOURNAL - VOLUME 13 - PART 3 - 1987 Rijksherbarium, Leiden, The Nederlands
    Pileus 17—32 mm latus, conico-convexus, convexus vel plano- convexus, umbonatus, obscure brunneus, rubello-tinctus (an primo centro badius) marginem versus pallescens, striatus, hygrophanus, in sicco pallide brunneus, colore rosco destitutus, nec rugulosus, nec atomatus. Velum album tenue, evanescens, margine pilci, e fibrillis et fasciculis parvis formatum, nec appendiculatum, fibrillace in stipite paucae. Lamellae 3—5 mm latae, ventricosae, late vel admodum late adnatac, obscure tabacinae vel cinereobrunneaec, acie albae. Stipes 20-30 x 2—4 mm, cylindraceus, cavus, sordide albus, deorsum brunnescens, ecradicatus, apice pruinosus, Caro pilei centro 1.5—2 mm crassa, obscure brunnea, stipitis sordide alba vel pallide brunnea et brunnescens deorsum.
   Sporae in cumulo admodum obscure badiae, 7—8.5 x 4—4.5 um, ellipsoideae, nonnullae phaseoliformes, in aqua observatac aurantiobrunneae, poro germinativo indistincto munitae. Basidia 16—20 x 7—7.5 wm, clavata, 4-sporigera. Pleurocystidia (30—)35—45(—S0) x (7.5—)9—13 wm, utriformia, raro apice constricta, vulgo fusoidea apice (admodum) obtusa vel subobtusa, parum numerosa, tenuitunicata, sine colore vel admodum dilute brunnea in NH4gOH 10%. Cellulae marginales: cheilocystidia pleurocystidioidea 25—45 x 7.5—12.5 um, abundantia, cellulis spheropedunculatis et clavatis 12.5—22.5 x 7.5—12.5 um intermixta, tenuitunicata et sine colore, numerosa. Trama lamellarum colorata. Pileipellis e cellulis formata.
Terrestris, subcaespitosa vel solitaria.