Porto Rico. — On dead leaf-sheaths at the base of living cane stalks 

 and on dead cane stalks, Rio Piedras, July, 1912, 4509, July, 1915, 

 2908, July, 1916, 5628, April, 1917, 6382. Determination by Dr. 

 Burt. PL XXVI, tig. 11, 12.) 



This s.nrae form has been referred to by Home in Cuba as Penio- 

 phora sp. and later as probably Hypochnus sacchari Speg. (38,39). 

 The latter has also been suggested as the proper designation for the 

 Porto Riean fungus, but Spegazzinia's (73) description of the Hy- 

 pochnus as the cause of a disease of the bud (cogollo) of the stalk 

 rather effectiyely disposes of this possibility to say nothing of the 

 characteristics of the fungus itself. This form is quite clearly a 

 saprophyte only, although at times occurring as does 0. saccharicola, 

 the more common species, at the base of living cane stalks. 



^lERULms BYSSOiDETTS Burt sp. nov.^ 



Porto Rico. — On dead cane and soil, Rio Piedras, Aug., 1912, 

 1664. Forming a thin layer on rotten cane trash and soil. 



POLYPORUS OCCIDENTALIS Klotzsch. 



Coriolopsis occidenfalis (Klotzsch) Murrill. 



Porto Rico. — On dead cane stalk, Rio Piedras, Dec, 1913, 1212. 

 Very common on dead wood every-where. (PI. XXI, fig. 2.) 



POLYSTICTUS SANGUINEUS L. 



Pycnoporus sanguineus (L.) ]\Iurrill. 



Porto Rico. — On dead cane stalks, Rio Piedras, Jan., 1914, 1181, 

 Feb., 1914, 1294. Very common everjnvhere, particularly on dead 

 wood. A striking form because of the bright red color of the pileus. 



PoLYST^CTUs siNuosus (Fr.) Sacc. 



Color from white to yellowish, mostly resupinate; pores broad, 

 tlexuous daedaloid ; spores hyaline, cylindric-curved, 5-6 X 1-1.3 mu. : 

 basidia clavate 15-16 X4r-5 mu. ; hyphae of context tubidar, 2.5-3.5 

 mu. diam. Description after Saecardo. 



Porto Rico. — On dead cane stalks, Rio Piedras. Feb., 1914. 1291. 

 Feb., 1917, 6206; Juneos, July, 1915. 2905. Determination by C. G. 

 Lloyd, Myc. Notes No. 45. (PL XXIT, fig. 3.) 



1 To be descrilied by Dr. Burt in Ann. Mo. Bot. Gardon IV, Xo. 4, Xov. 1917. 



217 



