tie ILLINOIS BIOLOGICAL MONOGRAPHS [528 



'15, 8603. Maricao, April 3, '13, 758. Monte de Oro, near Cayey, Dec. 

 3, '13, 5678. 



The type was collected by Heller on P. adunctum near Mayaguez, 

 Jan. 1900, No. 4359 b. 



89. Meliola quadrispina Rac. 



Parasit. Algen. u. Pilze, Javas, III, 33, 1900. 



Meliola quadrifurcata Rehm. Leaflets of Philippine Bot, 6: 2194, 

 1914. 

 On Ipomoea cathartica Poir. Fig. 53. 



Las Marias, July 10, '15, 8163. • 



In general aspect of the colony and in the shape of the hyphopodia 

 there is a striking similarity among the three species above recorded on 

 the Convolvulaceae, which may point to a close relationship between 

 them. This very beautiful species differs from all others that I have 

 seen in its delicately forked setae, which are indeed the striking charac- 

 ters of the colony. Both types of hyphopodia are strictly opposite though 

 this character is not mentioned in the original description. 



90. Meliola philodendri sp. nov. 



Colonies chiefly epiphyllous, circular, black, 1-5 mm. in diam., 

 velvety. Mycelium coarse, 8/x,, straight, branches opposite at uniform 

 angles, setigerous close to the margin of the colony. 



Capitate hyphopodia mostly opposite, about 20-30/a apart, stalk cell 

 short, Sfi, head cell oval, not angular, 10 x 14)u,. Mucronate hyphopodia 

 scarce, ampuUiform, alternate or opposite, often crowded, mycelial setae 

 long, 230-300/i., black, at base about 9/i thick, dichotomous, forking three 

 or more times, ultimate branches acute, branches about 120ju, long. 



Perithecia about 185/a in diam. Spores cylindrical, obtuse, 4-sep- 

 tate, only slightly constricted, 48-54 x 15-20/x,. Spores sometimes nar- 

 rower and much constricted, becoming moniliform in appearance. 

 On Philodendron krehsii Schott. Fig. 54. 



Arecibo-Lares Road, June 21, '15, 7225 (type). Jayuya, March 2, 

 '13, 377, Mch. 1, '13, 437. Ponce, Nov. 8, '13, 4346. Jajome Alto, July 

 17, '15, 8424. Maricao, July 20, '15, 8994. El Alto de la Bandera, 

 July 16, '15, 8712. 



The long, branching, dichotomous setae, together with the opposite 

 hyphopodia distinguish this species. The species is a conspicuous one 

 and is of common occurrence in Porto Rico wherever the host is found. 



