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FUNGORUM - Acervo Digital de Obras Especiais

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366 Agaricineæ, Leucosporæ, Pleurotus.<br />

Hab. ad lignum abietinum e rimis emergens, in agro Mustialensi<br />

in Fennia. - Cognatus P. reniformi Fr. Hym. eur. p. 177.<br />

Sparsus, serialiter erumpens. Pileus horizontalis, postice emarginatus,<br />

margine regulari, integro, circiter 5 mm. latus; stipes brevissimus,<br />

subin<strong>de</strong> subtuberculiformis.<br />

112. Pleurotus portegnus Speg. F. Arg. IV, p. 3. - Pileo carnosulo- 1433<br />

gelatinoso, dimidiato-applanato 1,5-4 cm. diam. <strong>de</strong>orsum truncato,<br />

adnato-sessili v. centro tantum adnato-substipitato, fusco-cinereo<br />

v. gilvo-fuscescenti, margine integro acutiusculo, subrevoluto, basi<br />

præcipue centrum versus incrassatulo tomentoque furfuraceo-pruinuloso<br />

postice griseo-albescente antice sæpius evanescente et infuscato<br />

tecto; lamellis confertis membranaceis, tenerrimis, candidis,<br />

opacis, polymacriis, utrinque attenuatis, 2-3 mm. <strong>de</strong>orsum evane-<br />

scenti-confluentibus, carne crassiuscula 1-1,3 mm. gelatinoso-hya-<br />

lina (fusca tamen visa), ab hymenophoro discreta; cystidiis clavu-<br />

lato-elongatis vel subfusoi<strong>de</strong>is 50-70 10-12, <strong>de</strong>orsum attenuato-<br />

stipitatis, medio subcylindraceis, sursum conice attenuato-acutatis<br />

apice obtuso, subtruncatulo, tunica crassa, ad duas tertias partes<br />

inferas levibus, ad tertiam superam prominenti-crassissimis, ubique<br />

verrucoso-rugosis, hyalinis ; basidiis cylindraceo-clavulatis, 40 8-9,<br />

hyalinis apice rotundatis, 4 sterigmatibus majusculis 5 1 ornatis;<br />

sporis ellipticis, utrinque rotundatis, sæpius inæquilateralibus, basi<br />

excentrice acutato-angulatis, 8-10 4-5, hyalinis.<br />

Hab. ad truncos Salicis Humboldtianæ ac Erythrinæ cristæ-galli<br />

prope la Recoleta, in Argentina Amer. merid. et ad truncos vetustos<br />

muscosos in silvis prope Guarapi. - Fungus per exsiccationem<br />

val<strong>de</strong> contrahitur, tenacello-durus, disco nigricante, carne albe-<br />

scenti-subevanescente, lamellis pallescentibus. Species perpulchra<br />

P. reniformi Fr. affinis, val<strong>de</strong> tamen distincta, carne uda vere ge-<br />

latinosa cystidiisque abnormibus. Specimina guaranitica, pileo sæpius<br />

obovato v. spathulato-flabellato, postice cuneato-substipitato, ce-<br />

teris characteribus tamen cum speciminibus bonaërensibus plane<br />

congruentia; habitu fere Crepidoti, sporis tamen hyalinis: an huc<br />

Agaricus (Crepidotus) phalligerus Montg. ducendus? Speg. I. c.<br />

113. Pleurotus planus Fr. Elench. I, p, 23, Hym. Eur. p. 177, Alb. 1434<br />

et Schwein. p. 230, ß. - Pileo carnosulo, semiorbiculari, <strong>de</strong>mum<br />

applanato, fragili, glabro, udo, violaceo-carneo, margine striato;<br />

stipite brevissimo, basi tomentoso; lamellis <strong>de</strong>terminatis, distinctis,<br />

incarnatis.<br />

Hab. ad ligna Fagi in Europa. - Subsessilis, pusillus, vix 2 1/2

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