Trametes nivosa (Berk) IMiirrill. 



Porto Rioo. — On dead cane stalks, Rio Piedras, Dee., 1913, 1211, 

 Oct., 1914, 2277, Dee., 1914, 2672, Dec., 1916, 5859. Determination 

 by Prof. Lloyd. A common white form, sporopliores often sessile 

 and somewhat abnormally shaped. 



Lentinus crinitus (L) Fr. 



Porto Rioo. — On dead cane stalks, Rio Piedras, Feb., 1914. 1295, 

 Jan., 1914, 1198, Feb.. 1916, 6113. Common everywhere on dead 

 wood. Sporophores 4-7 cm. broad, pale-fawn colored to dark red- 

 dish brown, covered with stiff squamose hairs. 



Marasmius borinqiiensis Stevenson sp. nov. 



Pileus minute, delicate, single or gregarious, hemispheric, later 

 expanding, subumbilieate, reaching 3 mm. broad, Init commonly 1-2 

 mm. only; surface radiate-sulcate, glabrous, white, yellow on drjdng, 

 membranous, margin involute, concolorous; lamellae few, usually 

 about 10, occasionally forked, distant, white, yellow on drying, ad- 

 nate; spores broad elliptic or ovoid with a small point at one end, 

 5.1 X 6.8 mu., hyaline ; stipe fiiliform, concolorous with pileus, slightly 

 villous at base, 2-6 mm. long. Near Marasmius JIarhlcac Murrill. 



Porto Rioo. — On cane (Otaheite) Rio Piedras, Sept. 10, 1912, 

 4604 (type) Rare. (PI. XXVI, fig. 15-17.) 



Marasmius hiorami Murrill. 



Porto Rioo. — On cane IcMf-sheaths, cane tras-h, Rio Piedras, Sept., 

 20, 1912, 4600. Rare. 



Marasmius synodicus (Kze) Fries. 



Port.o Rico. — On dead cane trash, Rio Piedras, Jan., 1917, 6195. 

 Also collected on dead leaves and stalks of other grasses. Common. 



The sporophores of this species are gregarious, 6-10 mm. broad, 

 white or pallid, and 1-2 cm. high, with adnate gills. 



SCHIZOPHYLUUM OOMMUNE FricS. 



Porto Rico. — On dead and dying cane stalks, Rio Piedras, Feb., 

 March, 1911, 4029, 4051, 4058, 4065: Plazuela, July. 1911, 4071. 

 Connnonly observed in all parts of tlie Island. Also very common 

 on dead wood. ^Pl. XXII, fig. 4.) 



This is one of the commonest forms observed on dead and dying 



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