THE FUNGI WHICH CAUSE PLANT DISEASE 593 



Hyphae little-branched; conidia six-lobed 

 and sarcinaeform, central cell larger, 



colored, lobes hyaline 2. Synthetospora. 



Parasitic 3. Hyalodema, p. 593. 



This group contains but one important pathogen, Hyalodema 

 evansii Mag., recently described by Magnus '"'■' on Zizyphus in 

 Africa. 



The Moniliaceae-Helicosporae contain no important parasites. 



Moniliaceae-Staurosporae (p. 565) 



Conidia hyaline or bright colored, stellate, radiate or forked, 

 septate or continuous. 



Key to Genera of Moniliaceae-Staurosporae 



Hyphse lacking; conidia trident-shaped. ... 1. Tridentaria. 

 Hyphse present 

 Conidia globose to cylindric, permanently 

 attached to 2 or 3 divergent sterig- 



mata 2. Tetracladium. 



Conidia themselves stellate or radiate 

 Conidia bilobate-forked; lobes parallel, 



contiguous 3. Pedilospora. 



Conidia narrowly digitate 4. Prismarla. 



Conidia 3 to 4-radiate 



Conidia ciliate at the apex 5. Titaea, p. 593. 



Conidia muticate 



Conidia 3-radiate 6. Trinacrium. 



Conidia 4-radiate 

 Fertile hyphse very short, simple 7. Tetracium. 

 Fertile hyphse branched 8. Lemonniera. 



Titeae Saccardo 



Conidiophores simple, continuous; conidia subradiately 4 to 5- 

 celled, the cells imequal in size. 



A small genus of little economic importance. 



T. maxilliformis Rost. has been found on the roots of clover in 

 Denmark.*'^ 



