ttymenomycetEe, Agaricacefe, Leucospora3, Pleurotus. 67 



17. Pleurotus eleuterophyllus (Lev.) Sacc. ot Trott. Agaricus Pleu- 271 

 ropus eleuterophyllus Lev. Mem. Soc. Linneenne 1825, pag. 31, 



pl. IV. — Pileo dimidiato, conchiformi, carnoso, fuscescenti; sti- 

 pite subnuUo v. tuberculoso; lamellis basi liberis, rotundatis, cras- 

 sioribus, pileo dilutioribus. 



Hah. ad truncos in Gallia. — Pileus 5-6 cm. alt., 8-9 cm. latus; 

 lamellsB basi 10-12 mm. latce. Videtur diversa a Pano farinaceo 

 (-= Ag. eleuterophyllus March.). 



18. Pleurotus umbonatus Peck, Bull. Torr. Bot. Cl. XXXII (1905) 272 

 pag. 77. — Pileo carnoso, convexo, umbonato, fibrilloso, subsqua- 

 muloso, brunneo v. nigro-brunneo ; carne alba, cuticula quandoquo 

 rimosa; lamellis latis, subdistantibus, adnatis v. leniter decurren- 

 tibus, in sicco brunneis; stipite excentrico, sequali v. supra angu- 

 stato, farcto v. cavo, pileo concolori v. pallidiori ; sporis albis, sub- 

 globosis V. late ellipsoideis, 5-6 v 4-5. 



Hab. ad terram Kittaning Pa Amer. bor. (D. A. Sumstine). — 

 Pileus 2-7 cm. latus; stipes 2-4 cm. longus, 0,5-1 cm. cr. 



19. Pleurotus rhodophyllus Bres. Ann. mycol. v. ITI (1905) p. 159. — 273 

 Cfespitosus, raro simplex; pileis carnosis, flabelliformibus, siccis, al- 

 bis, glabris, 1 7., -4 cm. latis, ad 1-3 cm. productis; lamelHs albis, dein 

 incarnato-isabellinis, confertis, postice attenuato-decurrentibus ; sti- 

 pite laterali, albo 2-3 mm. longo, crassoque in CcTspitibus tuber- 

 culoso, unico; sporis hyalinis, in cumulo carneolis, oblongo-ob- 

 ovatis, 7-9 «4-5; basidiis clavatis, 20-25 « 8 ; carne alba, molli, 

 odore et sapore haud notabilibus. 



Hab. ad truncos Ulmi campestris « Paludi pontine » pr. 

 Eomam (Mariani). — Pleurofo Opuntia^ Lcv. proximus, a quo 

 tamen optime distinctus. 



20. Pleurotus Eugeniae (Earle) Sacc. et Trav. — Syll. XX, p. 451. — 274 

 Geopetalum Eugenia? Earle, Estac. agronom. Cuba I (1906) p. 234, 

 tab. XXXII, fig. 3. — Pileo tenui, 2-4 cm. lato, applanato, sub- 

 orbiculari v. subreniformi, albo v. basi cinerescenti, sicco, fibril- 

 loso, excepto margine glabro et non striato; lamellis distinctis, 

 decurrentibus, subremotis, angustis sed medio parum ventricosis 

 etalbis; sporis ellipsoideis, subcurvulis, 5*3; stipite 4-8 cm. long., 



2 mm. cr., cylindrico, pilis densis, albis, rigidis pra-dito. 



Hab. solitarius vel congregatus ad truncos vel radices pntres 

 EugenicB Jambos, Santiago de las Vogas in ins. Cuba. 



21. Pleurotus albus (Earle) Sacc. et Trav. Syll. XX, p. 447. — 27B 

 Geopetalum album Earle, Estacion agronom. Cuba T (1906) p. 234, 



