Hymenomycetae, Agaricaceae, Leucosportfi, CoUybia. 81 



Hdb. inter folia dejecta pr. Bern Helvetiae. — Affinis C. ma' 

 cidatce. 



18. Coilybta nigrodisca Peck, 60 Eep. p. 98 (1897). — Pileo tenui 83 

 convexo, glabro albido v. fumoso-albido, disco brunneo v. nigri- 

 cante; carne alba; lamellis latiusculis, subdistantibus, rotundatis, 

 adnexis, albidis; stipite aequali, cavo, pruinosO, levi v. striatulo, 

 albido; sporis subellipticis, 6-7 « 4. 



Hah. in arenosis Suffolk county Amer. bor. — Pileus 3-4 cm. 

 lat.; stipes 3-4 cm. long., 4 mm. cr. — Habitus fere Marasmii 

 Oreadis. 



19. Collybia uniformis Peck, 60 Eep. p. 98. — • Pileo tenui, bemispliaB- 84 

 rico V. convexo, glabro, liygrophano, udo griseo-brunneo, sicco 

 pallidiore, margine levi, initio involuto v. incurvo; lamellis angu- 

 stis, crebris, rotundatis, subliberis, albidis; stipite sequali, glabro 



V. subpruinoso, cavo, griseo-brunneo, basi tomento mycelioideo 

 parce vestitis, sporis minutis, subglobosis, 3-4 a diam. 



Hah. inter muscos ad lignum putre, Saramac Lake Amer. bor. 

 C. acervatcB a,f&ms, csespitosa ; pileus 6-12 mm. lat.; stipes 2-3 cm. 

 long., 2 mm. cr. 

 SK). Collybia umbrina Clem. Bot. Survey of Nebraska IV, Lincoln 85 

 1896, p. 19. — Pileo convexo, carnoso, umbonato, brunneo, glabro, 

 estriato, viscido, atro lineolato-adsperso ; umbone atro; stipite lon- 

 gissimo, superne attenuato, carnoso, solido, albo, infeme fuscescente; 

 lamellis adnatis, latis distantibusque, insequalibus, albis ; sporis 

 irregulariter limoniiformibus, 17-18 « 12 13, aculeatis, nucleo 10 p. 

 diam. prseditis. 



Hob. in ramis putridis, Nebraska Amer. bor. — Kleus 4 cm. 

 latus ; stipes 26 cm. longus, supeme 5 mm., inferne 10 mm. crassus. 

 An varietas Collybice radicatce Eelk? 



21. Collybia niveo-Iutescens (Viv.) Cke. in litt., Agar. niveo-lutescens 86 

 Viviani Fung. Ital. p. 64, t. 62. — Candida; pileo primum ovato, 

 dein campanulato, hemispkserico, tandem planescente, depressoque, 

 margine sulcato papilloso; carne mox extenuata; lamellis late se- 

 junctis a stipite; lioc nudo elongato, cavo, in bulbum ovatum in- 

 crassato; pileo lamellisque per setatem in ocbraceo-lutescentem 

 vergentibus. 



Hah. in Italia bor. — Dense csespitosa. 



22. Collybia Patouiilardi Sacc. et Syd. Sic nominanda est Collyhia rJio- 87 

 della Pat. Sacc. Syll. V, p. 233, quum exstet anterior C. rJio- 

 della Berk. 



6 



