529] MELIOLA IN PORTO RICO — STEVENS 61 



91. MetjoLxN. merrillh Syd. 



PhU. Jour. Sc. 8 C 6: 479, 1913. 

 On Cissus sicyoides L. 



San German, Dec. 12, '13, 5846, Nov. 8, 13, 5789, 5788. Lares, 

 Nov. 22, '13, 4841. Utuado, Nov. 8, '13, 4418, 4398. Villa Alba, Jan. 

 3, '12, 101. El Gigante, near Adjuntas, Dec. 15, '13, 5819. Dos Bocas, 

 below Utuado, Dec. 17, '13, 6063, July 8, '15, 8101, July 7, '15, 7968. 

 Anasco, Oct. 12, '13, 3565. Aguada, Nov. 22, '13, 5102. Yauco, Oct. 

 3, '13, 3145, 3143. Mayaguez, Oct. 31, '13, 3948, 3910. Rio Tanama, 

 July 6, '15, 7913. Manati, July 2, '15, 7690. 



The type is on Cissus leaves collected in Luzon by Merrill. A co- 

 type specimen was kindly sent to me by Doctor Merrill, also by Dr. 

 H. Sydow, and comparison clearly verifies the determination, though 

 there are certain minor differences. In particular, the mycelium in the 

 Porto Rican specimens is much more dense and luxuriant. 



92. Meliola gaillardiana sp. nov. 



Colonies epiphyllous, small, circular, 1-2 mm. in diam., black; my- 

 celium irregular, crooked, forming a very close, dense network of threads 

 about 9/i, thick, cells about 14/li long. 



Capitate hyphopodia small, alternate or irregular, crowded, about 

 7-17/Li apart, ovoid, pyriform or curved, 10/x in diam., the basal cell 5-6ju, 

 long. Mucronate hyphopodia few and scattered, alternate or opposite, 

 bottle-shaped, the neck narrow. Mycelial setae abundant, straight, rigid, 

 220/i long, 10/i, thick, opaque; at tip bearing a crest, about 17-34/x, of 

 short, acute spines ; sometimes forking below this crest. Perithecial setae 

 none. 



Perithecia 170/x in diam., slightly rough with rounded protuber- 

 ances of small, 6/i,, subprominent cells, ostiole none. Asci soon evanes- 

 cent; ascospores 4-septate, brown, very slightly constricted, obtuse, ter- 

 minal cells longer than the others, 3 x 14/t. 

 On Piper adunctum L. Fig. 55. 



Rio Arecibo, July 8, '15, 7794 (type), 7796. Dos Bocas, below 

 Utuado, July 8, '15, 8044, Dec. 30, '13, 6802. Las Marias, July 11, '15, 

 8223. 



The crests at the apices of the mycelial setae are very distinctive. 

 They seem to be due to a very close, dichotomous branching. The form 

 is most nearly related to M. piperis but is separated from that species 

 by the setal tips and the density of mycelium. It differs much from 

 M. pululahuensis in its mycelial tips. The difference from M. patouUlardi 

 is less, still the form appears to be distinct from both. 



