Forming a thin white layer over the substratum, microscopically 

 characterized by 3-4 armed stellate appendages on the hyphae. 



Peniophora cinerea (Fr.) Cke. 



Porto Rioo. — On dead cane stalk, Rio Piedras, July, 1916, 5638. 

 Determination by Dr. Burt. A very common form on dead wood, 

 particularly on dead branches of citrus, forming cinereous fruiting 

 patches. 



Peniophora flavido-alba Cooke. 



Porto Rico. — On dead cane stalks, Rio Piedras, Dec, 1916, 6068. 

 Determination by Dr. Burt. Common on dead wood. 



Tremellodendron simplex Burt, Ann. Mo. Bot. Grarden 2 :742. 



1915. 



Fructifications about 2 cm. long, 2 mm. thick, scattered, erect or 

 suberect, drying hard, brittle somewhat longitudinally wrinkled and 

 sometimes compressed, black above, olive-ocher with the hymenium 

 towards the base; hymenium amphigenous on the lower half of the 

 fructification, olive-ocher, hyaline under the microscope, with the 

 surface consisting of colorless clavate paraphyses 5 mu. thick, and 

 with basidia and spores at base of the paraphyses; basidia longi- 

 tudinally septate ; 11 X 7 mu. ; spores hyaline, even 7.5-9 X 5-G niu. 

 Descrii:)tion after Dr. Burt. 



Porto Rico. — On cane trash, Rio Piedras, 1911. Rare. 



Hydnum sacohari (?) Spreng. 



Porto Rico. — On dead cane, Rio Piedras, Jan.. 1914, 1174. De- 

 termination by Mrs.F. W. Patterson. 



Odontia sacchari Burt. Ann. Mo. Bot. Garden 4. Xo. 3. 1917. 



Fructification resupinate, effused, portions may be peeled from 

 substratum when moistened, floccose, white, becoming ivory-yellow 

 to pale olive buff with age or in the herbarium, not cracked, the 

 margin thinuinff out, fioccosc-reticulate under a lens: granules mi- 

 mite, crowded, altout 8 to a iiiiii. : in structure lOO-.'iOO mu. thick 

 with the granules extending 15-45 mu. more, composed of suberect, 

 branched, loosely interwoven hyaline hyjihae 3.5-4 mu. in diam., 

 occasionally nodose-septate, not incrusted, bearing singly along their 

 sides in their middle region hyaline, eylindrie, even spores 9-11 X 3-4 

 mu. ; basidia simple, 2 sterigmata : basidiospores hyaline, even, sub- 

 globose, 3.75 X 3-3.75 mu. ; cystidia septate, eylindrie, more or less 

 granular incrusted, hyaline, 6-9 mu. in diam., protruding 20-60 mu., 

 about 1-3 to a granule at the apex. Description Dr. Burt's. 



216 



