UREDINACEAE 415 



and teleutospores produced on the same host-plant ; aecidia 

 not produced. 



Puccinia buUata, Schrot., Pilze Schles., p. 335. — Sper- 

 mogonia honey-colour, arranged in rounded groups ; 

 uredospores irregularly globose, aculeate, ochraceous- 

 brown, apex incrassated, 23-38x20-26 /x, with two lateral 

 germ-pores, shortly pedicellate ; teleutospores deformed, 

 slightly constricted at the septum, both ends rounded, 

 rarely narrowed at base or apex, smooth, brown, apex 

 thickened, 30-56X17-28 /x ; pedicel deciduous, slender, 

 longish. 



^** Hemipuccinia, Schrot. — Uredospores and teleuto- 

 spores produced on the same host ; spermogonia and 

 aecidia unknown. 



Puccinia tanaceti, D. C, Flor. Fra?ice, ii. p. 222. — 

 Uredo sori hypophyllous, scattered, erumpent, orbicular, 

 plane, very minute, brownish, crowded, spores elliptic or 

 ovate, 19-35 X 16-25 /x, muricato-aculeate, ochraceous ; 

 teleutospores forming sori on both sides of the leaf, 

 blackish, pulvinate, erumpent, orbicular, scattered, or 

 crowded, spores elliptical or clavate, apex much thickened, 

 cells almost equal, constricted at the septum, 32-60 x 17-28 

 /x, smooth or apex punctulate, chestnut-brown ; pedicel 

 hyaline, up to 100 /x long. 



Puccinia pruni, Pers., Syn. Fung., p. 226. — Uredospores 

 hypophyllous, sori minute, orbicular, confluent, cinnamon- 

 brown, 10-35X10-18 ^t, spinulose, sessile, apex generally 

 thickened ; paraphyses numerous ; sori of teleutospores 

 hypophyllous, scattered or confluent, plane, brown ; spores 

 oblong formed of two globose cells, lower one generally 

 smallest, 28-45x17-24 /x, covered with aculeate warts, 



