544 THE FUNGI WHICH CAUSE PLANT DISEASE 



G. concentricum Grev. causes spotting of leaves of cabbage, 

 cauliflower, etc. 



G. cattleyae (P. & D.) Sacc. grows on leaves of Cattleya; 

 G. dianthi Cke. on carnation in England. G. clematidis Sor. is 

 found on cultivated clematis stems ;^°^ 



G. rosae Hals.^^ is reported by Halsted on rose canes causing 

 injury similar to that of G. venetum on the raspberry. 



G. mezerei Cke. is on Daphne. 



G. affine Sacc. grows on various orchids and Hoya. G. oncidii 

 Oud. on Oncidium. 



G. euphorbiae Hals, is on clusters and stems of spurge.^' 



G. stanhopeicola Hen., G. laelise Hen. and G. pallidum Karst. 

 & Har. are on orchids; G. helicis (Desm.) Oud. on English ivy. 



G. cactorum Ston. occurs on a number of species of cacti; 



G. beyrodtii Klitz on Vanda; 



G. opuntiae E. & E. on Opuntia; 



G. elasticse C. & M. on Ficus; 



G. bruneum Fetch, and G. alborubrum Fetch, on Hevea. 



G. rhodendendri Br. & Cav. forms yellow spots on various 

 species of Rhododendron. 



G. aquilegise Thtim is on Aquilegia. 



G. violae B. & Br.i* 



Spots pale, becoming whitish; acervuli very thin, solitary; 

 conidia yellowish. Causing leaf spots on cultivated violets. 



G. cytisi B. & Br. is on laburnum; 



G. bidgoodii Cke. is on Oncidium; 



G, pelargonii C. & M. on Felargonium. 



G. crotonis Del. occurs on Codiseum. 



G. soraurianum All. also on Codiseum leaves and described as 

 a dangerous parasite is perhaps identical with G. crotonis. 



G. anthuriophilum Trinch. causes spots on Anthurium leaves. 



G. begonise Magnag. is on begonias in Italy. 



G. fagicolum Fass. is widespread and destructive to beech 

 in Germany. 



G. umbrinellum B. & Br. is found on Quercus; 



G. inconspicuum Cav. on elm; 



G. theae-sinensis Miy. and G. theae Zimm. on tea in Japan and 

 Africa. 



