200 



MYCOLOGY 



slit. The teliospores consist of four superimposed cells. There is a 

 North American species of this family, Gallowaya pint (formerly Coleo- 

 sporium pini), which has teliospores only and these on the leaves of 

 Pinus inops, i.e., on trees of the same order on which Coles porium has 



Fig. yo.—A-D, Uromyces pisi. A. Ascidia on deformed leaves of Euphorbia 

 cypanssms; B, ascidia enlarged; C, teliosori on leaves of Pisum sativum; teliosori 

 enlarged; £ and F, Uromyces trifolii on Trifolium hybridum. (After Dietel Die 

 naturltchen Pflanzenfamilien I. lA**, p. ss) 



its aecia. In Coleos porium, the teliospores are adherent closely with a 

 rounded, thickened, gelatinizing pore. The long sterigmata bear 

 large, ovate, flattened sporidia. The orange rust of asters and golden 

 rods,'_ C. solidaginis is reported to cause a sickness of horses, some- 



