590 



FUNGI IMPERFECTI-, THE IMPERFECT FUNGI 



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Fig. 197. Moniliales, Family Moniliaceae. (A) Oidiuvi (Bhinotrichum) aureum 

 Corda; conidiophores and conidia. (B) Piricularia oryzae Briosi & Cavara; conidio- 

 phores. (C) Ramularia rosea (Fckl.) Sacc; conidiophores with conidia. (A, courtesy, 

 Linder: Lloydia, 5(3):165-207. B, after Briosi and Cavara: Fascicle VIII, No. 188. 

 C, ibid.. Fascicle IV, No. 77.) 



cladium and Didymocladium, both with creeping vegetative mycehum 

 and upright branched conidiophores, the former with single or a few not 

 catenulate conidia at each branch tip, and the latter with more strongly 

 verticillate branching and chains of conidia at the tips. 



Among the Hyalophragmiae there are about a dozen unimportant 

 saprophytic genera and two that are serious parasites of cultivated plants. 

 These are Ramularia and Piricularia. In addition some species of Septo- 

 cylindrium are more or less parasitic. In Ramularia the conidiophores 

 emerge through the stomata of the host in bundles of two or three to half 

 a dozen. At first each conidiophore bears a single terminal conidium 

 which is ellipsoid and one-celled. As it enlarges it becomes elongated, 



