54 ILLINOIS BIOLOGICAL MONOGRAPHS [522 



black, setae. They, in general, resemble those figured by Gaillard for 

 M. balansae or M. intermedia, but the agreement goes no further. There 

 is a strong superficial resemblance to M. pazschkeana, but the two are 

 readily distinguished by their very different mucronate hyphopodia. 



A specimen on Tecoma which I have not seen, labelled 31. pazsch- 

 heana, in the Bronx herbarium may possibly belong here. 



Section G 



Spores 4-septate, no perithecial appendages, mycelial setae both 

 simple and forked. 



Key to Species op Section G'- 



Capitate hyphopodia opposite M, ipomoeae No. 78 



Capitate hyphopodia not usually opposite 



Setae very long, 1000/x M. guareae No. 79 



Setae shorter 



Capitate hyphopodia very narrow, scarcely 



thicker than the stalk cell M, magnoliae No. 80 



Capitate hyphopodia thicker 



Head cell nearly globular M. bicornis No. 95 



Head cell more or less elongated 



Capitate hyphopodia often opposite M. smilacis No. 81 

 Capitate hyphopodia alternate 



Head cell regular M, helleri No. 82 



Head cell irregular 



Setae sometimes forked M. mangiferae No. 83 



Setae merely denticulate M. denticulata No. 84 



78. Meliola ipomoeae Earle (Not M. ipomoeae Rehm-) 



Muhlenbergia 1 : 10, July 1901. 

 On Ipomoea cathartica Poir. 



Las Marias, July 10, '15, 8183. Vega Baja, July 2, '15, 7729. 

 El Alto de la Bandera, July 16, '15, 8692. 

 On Ipomoea tiliacea (W.) Choisy. 



Aiiasco, Oct. 12, '13, 3506. Mayaguez, Oct. 31, '13, 3909. 

 On Ipomoea sps. Fig, 49. 



El Miradero, Aug. 4, '15, 9160. Dos Bocas, below Utuado, July 8, 



^M. stenotaphri which very rarely has bifid setae is to be found in section E. 



^The use of this specific name by Rehm (Ann. Myc. 12:171, 1914) is clearly 

 invalidated by the prior use by Earle and M. ipomoeae Rehm becomes M. ipomoeae- 

 phile Rehm, in lit. 



