FUNGORUM - Acervo Digital de Obras Especiais

Agaricineæ, Melanosporæ, Psathyrella. 1135
suhimpellucidis, subinde inæquilateralibus; basidiis 15-18 6-8; cystidiis
36-42 14-16.
Hab. ad truncos vetustos ubique, etiam ad terram humosam
in umbrosis, cæspitosa in Europa, ad terram prope Minussinsk in
Sibiria, in ligno emortuo, Peradenya Ceylon (THWAITES), in Amer.
fœder., P. Natal Africæ et in ligno putrido Rockampton in Queensland
nec non in Tasmania Australize (THOZET). - Pileus 8 cm. latus;
stipes magnitudine varius, sæpe 2½ cm. longus, 1 mm. crassus;
primo lutescens, dein cinerescens, admodum tenuis, mox flaccescens,
sed non diffluens.
36. Psathyrella Tiarella B. et Br. Journ, Linn. Soc. XI, p. 557. - 4598
Pileo conico, pallido, membranaceo, estriato; stipite flexuoso, fistuloso,
pallido; lamellis ascendentibus, angustis, purpurascentibus;
sporis elongatis, 14 µ. long.
Hab. in substantiis vegetabilibus putrescentibus, Ceylon (THWAI-
TES). - Pileus 12 mm. latus, 2½ cm. altus, sordide albus, disco
umbrino; caro umbrina; stipes 4 cm. longus, 8 mm. crassus, pai-
lide umbrinus; lamellæ demum subuigræ. Affinis Psalhyrellœ dis-
seminatœ.
37. Psathyrella achnoa B. et Br. Journ. Linn. Soc. XI, p. 557. - 4599
Gregaria; pileo conico-campanulato, albo, striato, glabro, umbone
papilliformi, umbrino, acuto; stipite curvo, fistuloso, glabro; lamellis
angustis, ex albo nigris, postice attenuatis.
Hab. in ligno emortuo, Ceylon (THWAITES). - Dense gregaria,
profande striata; pileus 6 mm. latus; stipes 2½ cm. longus, basi
pilis rubescentibus ornatus. Habitus Psathyrellœ dimidiatœ.
38. Psathyrella aucta B. et Br. Journ. Linn. XI, p. 558. - Pileo 4600
campanulato, hispidulo, subcinereo, umbone papilliformi albo aucto;
stipite piloso, flexuoso, fistuloso; lamellis angustis adnatis; sporis
elongatis, 13 µ. long.
Hab. in ligno emortuo, Peradenya Ceylon (THWAITES). - Pileus
12 mm. latus, pilis brevibus vestitus; margine subrimoso; stipes
3 cm. longus, haud 2 mm. crassus. Affinis Psathyrel, disseminutœ.
Adest forma glabra, magis gregaria, profunde striata,
umbone pallide umbrino.
39. Psathyrella subtilis Fr. Syst. Myc. 1, p. 302, Hym. Eur. p. 316, 4601
Seyn. p. 14, Quél. p. 125. - Pileo membranaceo, campanulato,
obtuso, glabrato, hygrophano, ulo pellucido-triatulo, sicco levi;
stipite tiliformi, laxo, glabro; lamellis adnatis, cinereo-nigris, acie
albicantibus.