Hymenouiyceto, Agaricaceas, Leiieowpora', Omplialia. 101 



Rab. caespitosa in lij>no putri, Liiua, Ohio, Amer. bor. (C. W. 

 Dawhon). 



4. Omphalia byssiseda Bresadola in Rick, Fungi austro-anicric. exsicc. 377 

 u. 47, ct Agar. et Polyi). Bras., in Broteria 5., 1907, p. 73, tab. 9 

 iig. 4 (nomen nudum). — Ann. JVJ.vcol. 18., 1920, p. 27. ~ Pilco 

 carnosulo, ex umbilicato iufundibuliformi, tenui, crustulino vcl gil- 

 vido, expallente, glabro, margine striato, 1,5-5 cm. lato ; lamellis 

 strictis, subcoufertis, longe decurrentibus, albis ; stipite centrali 

 tereti vel iuterdum subcompresso, tibrilloso, glabrescente, apice 

 utplurimum striato. e gossypino-farcto cavo, pileo subcoucolore, 



1-3 cm. longo^ 1-3 mm. crasso, basi mycelio albo-membranaceo, 

 ex funiculis rliizomorphoides enato, insidenti ; sporis hyalinis, 

 oblongis, 5-7*2,5-3; basidiis clavatis, 21-24 «^ 4-5 ; cystidiis fusoi- 

 deis, 35 37 * 5-6 [a. 



Hab. ad frustula lignea mucida, S. Leopoldo, Brasiliae (Rick). — 

 Omphaliae chrysophyllae Fr. affinis. 



5. Omphalia collybiiformis (Murrill) Murrill, Mycologia 1916, p. 219, 378 

 Omphalina collyhiiformis Murrill, N. Amer. Fl. IX, p. 349 (1916). — 

 Pileo e couvexo umbilicato, parum tenaci, 3 cm. lato ; superficie 

 albida nitide satinata, glabra, cuticula disrumpeuti demum striata 

 praedita, margine coucolori, aetate reflexo laciuiato ; lamellis de- 

 currentibus, remotis, angustis, albidis; sporis subglobosis, levibus, 

 hyalinis, 4-7 [x cr. ; stipite cylindrico, aequali, tenaci, glabro, albido, 

 cavo, 2-5 cm. longo 2-3 mm. crasso. 



Hah. gregaria ad ligua dejecta in silva uda primaeva, Tepeite 

 Valley prope Cuernavaca, 2100 m. alt., Mexico, Amer. bor. (W. A. 

 et E. L. Murrill). 



6. Omphalia distantifolia Murrill, Mycologia 1916, p. 220, Omphalopsis 379 

 distantifolia Murrill, N. Am. Fl. IX p. 315 (1916). — Pileo iufuu- 

 dibuliformi, usque 3 cm. lato ; superficie albo-fumosae, sericea fi- 

 brillosa, glabra, late striato-sulcata ; lamellis decurrentibus, distan- 

 tibus, latis, albis ; sporis globosis v. late ellipsoideis, 5-7 |x long. ; 

 stipite subcylindrico, pruiuoso, albo, solido, 2 cm. lougo, 3-4 mm, 

 crasso. 



Hab. gregaria in Bambusa emortua, Moore Town, Jamaica, Amer. 

 bor. (F. S. Earle). 



7. Omphalia brunneo grisea Bresadola, Ann. Mycol. IS., 1920, p. 27. — 380 

 Pileo membranaceo, ex urabilicato infundibuliforrai, glabro, raar- 

 gine striato, griseo-brunueo, 2-3 cm. lato ; lamellis longe decurren- 

 tibus, subdistantibus, coucoloribusj in fuudo reticulato-junctis ; 



