502 FUNGI IMPERFECTI. 



ducing conidia at the end of each branch. Conidia septate 

 oval or cylindrical, and light-coloured. 



"The parasitic habit, simple or sparingly branched hyphae, 

 denticulate and bearing the septate conidia at the tips, charac- 

 terize the genus, which differs from Ovularia only in the 

 septate conidia " (Massee). 



Ramolaria cinarae Sacc. is said by Prillieux^ to have caused 

 great destruction in the cultivation of artichokes. The leaves 

 became spotted and died, so that no flower-heads were produced. 



The following are British species : 



Ramularia hellebori Fuck. On leaves of HeUeborus foetidus and H. 



R. epilobii (Schn.). On leaves of Epilohium. 



R. ulmariae Cooke. On leaves of Spiraea Ulmaria. (U.S. America.) 

 R. g^eranii Fuck. On under surface of leaves of various species of 

 Oeranium. 



R. lampsanae (Desrn.). On Lampsana and Eypochoeris. 



R. pruinosa Speg. On Senecio jacobea. 



R. plantaginis El. et Mart. On leaves of Plantago major. (U.S. Am.) 



R. variabilis Fuck. On leaves of Digitalis and Verba,$cum. (U.S. America.) 



R. calcea Ces. On leaves of Glecho-ina hederacea. 



R. urticae Ces. On leaves of species of Urtica. (U.S. America.) 



R. pratensis Sacc. On Rumer Acetosa. 



R. rufibasis (B. et Br.). On Myrica Gale. 



Some of the more important North American species are : 

 Ramularia nifomaculans Peck. On the buckwheat (^Fagopyrum esmden- 

 tum), it has proved a somewhat injurious fungus. 



R. albomaculata Peck. On leaves of Carya amencana. 



R. vibumi E. et E. On leaves of Viburnum Lentago. 



R. celUdis E. et K. On leaves Celtis occidentalis. 



R. desmodii Cooke. On leaves of various species of Desmodium. 



R. bninnea Peck. On living Tussilago farfara. 



R. areola Atk.s.^ This causes spots on the foliage of cotton. 

 " Spots amphigenous, pale at first, becoming darker in age ; 

 irregular in shape, limited by the veins of the leaf, conidia in 

 profusion giving a frosted appearance to the spots. Conidio- 

 phores fasciculate, in small clusters distributed over the spots. 

 Conidia oblong, usually abruptly pointed at the ends " (Atkinson). 



R. Goeldiana Sacc. is said to lull leaves and twigs of Coffea 

 arabica in Brazil. 



'"Maladie d. Artichants," Bidletin de la soc. mycolog. de France, 1892. 

 "■'Atkinson, Botanicai Gazette, xv., 1890, p. 166. 



