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FUNGORUM - Acervo Digital de Obras Especiais

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1066 Agaricineæ, Melanosporæ, Psathyra.<br />

24. Psathyra obtusata Fr. Syst. Myc. I, p. 293, Hym. Eur. p. 306, 4320<br />

Cooke III. t. 593, A. obtusus Pers. Syn. p. 428 (omnino convenit),<br />

Berk. et Br. n. 918, Schaeff. t. 60, f. 1-3. Var. major: A. fuscus<br />

Schum. n. 1807; var. minor: Vaill. Par. t. 12, f. 5-6, Ag. papyraceus<br />

Secr. n. 386. - Pileo submembranaceo, campanulato-expanso,<br />

obtuso, glabro, corrugi, hygrophano, subnitido; stipite rigi-<br />

dulo, æquali, levi, subnudo, pallido, basi incurvo; lamellis adna-<br />

tis, subdistantibus, subventricosis, e pallido umbrinis; sporis 7-9<br />

4-6.<br />

Hab. ad truncos quercinos simplex vel cæspitosa in Europa et<br />

in ligno emortuo, Ceylon (THWAITES). - Tenuis, rigido-fragilis;<br />

stipes 5-8 cm. longus, 2-5 mm. crassus; pileus excarnis, 2 cm.<br />

latus, umbrinus, siccus et margine pallens, sine velo; lamellæ 4-8<br />

mm. latæ. Proxima est Ps. spadiœœ, cui referendus A. papyraceus<br />

Pers. seu A. membranaceus Bolt. t. 11, ut e stipite validiore,<br />

lamellis carneis, pileo convexo et præcipue «margine involuto»<br />

patet.<br />

25. Psathyra asceva B. et Br. Journ. Linn. Soc. XI, p. 556. - Pileo 4321<br />

ex hemisphærico plano vel <strong>de</strong>presso, sulcato, carneo-griseo; stipite<br />

curvo, gracili, subtiliter fistuloso, albo; lamellis latis, postice<br />

rotundatis, adnatis; sporis brunneo-purpureis, 6 µ. long.<br />

Hab. in ligno emortuo, Pera<strong>de</strong>nya Ceylon (THWAITES). - Pileus<br />

18 mm. latus, sordi<strong>de</strong> roseo-griseus; stipes 2½ cm. longus,<br />

1 mm. crassus; lamellæ 3 mm. latæ. Affinis Ps. obtusatœ pariterque<br />

velo nullo.<br />

26. Psathyra lucipeta B, et Br. Journ. Linn. Soc. XI, pag. 556. - 4322<br />

Pileo subhemisphærico, pallido carneo, estriato; stipite curvo, glabro,<br />

fistuloso; lamellis angustis, ventricosis, postice rotundatis, adnatis;<br />

sporis ovatis, 8-10 µ. long.<br />

Hab. ad ramulos emortuos, Pera<strong>de</strong>nya Ceylon (THWAITES). -<br />

Gregaria; pileus 12 mm. latus, subhemisphæricus, roseo pictus,<br />

centro fusco, margine crenulato; stipes 2½ cm. longus, concolor.<br />

Vi<strong>de</strong>tur haud a<strong>de</strong>sse annuli vestigia; quare, ut prior, affinis Ps.<br />

oblusatœ.<br />

27. Psathyra fagicola Lasch n. 468, Fr. Hym. Eur. p. 306. - Pileo 4323<br />

membranaceo, campanulato, obtuso, striato, viscido; stipite æquali,<br />

fragili, fibrilloso, furfuraceo, pallescente; lamellis adnexo-sece<strong>de</strong>ntibus,<br />

subliquescentibus, brunneis.<br />

Hab. subcæspitosa ad Fagi truncos in Europa. - Stipes 5-7<br />

cm. Iongus, 5-7 mm. crassus; pileus 2½-6 cm. latus, virescente-

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