APPENDIX. 225 



oval, flattened, surrounded by the ruptured epidermis ; spores 

 subglobose, smooth, brown.— On leaves of Jtthusa Cynapium. 

 Condition of Puccinia JEthusee. 



Trichobasis Conii, Strauss. Sori oblong or irregular, 



convex, dark rusty-brown ; spores subglobose or oval, slightly 



rough, brown —On stems and leaves of Conium. Condition of 

 Puccinia Conii. 



Trichobasis Impatientis, Rabh. Sori roundish, pul- 

 verulent, reddish-brown ; spores subglobose, brown; epispore 

 smooth. — On leaves of Impatiens fulva, &c. Condition of Puccinia 

 nolitangeris. 



Trichobasis Rumicum, DC. Sori rounded, small, on 

 both surfaces, encircled by the ruptured epidermis, flattened ; 

 spores globose. — On leaves of various species of Rumex. 



Trichobasis Umbellatarum, Lev. Hemlock Rust; 

 spots yellowish; sori subrotund and ovate, scattered, on the under 

 surface, surrounded by the ruptured epidermis ; spores ovate, 

 oval, and oblong in the same heap, brown. — On Conium maculatum, 

 Apium graveolens, and other TJmbeWferce. August and September. 

 Uredo spores of Puccinia Umbelliferarum. 



Trichobasis Heraclei, B. Hogweed Rust ; on the 

 under surface, scattered, sometimes subconfluent, roundish, light 

 brown, girt by the remains of the epidermis ; spores obovate, 

 with a very short peduncle. — On Heraclenm sponclylium. June 

 and July. Uredo spores of Puccinia Heraclei. 



Trichobasis Hydrocotyles, Cooke. Flukewort Rust ; 

 without definite spots ; sori chiefly on the upper, sometimes on 

 the under surface, scattered, variable, roundish, erumpent, sur- 

 rounded by the ruptured epidermis ; spores subglobose, at length 

 brown ; epispore rough with minute tubercles. — On Hydrocotyle 

 vulgaris. Epping. July to September, 1863 and 1864. (Plate 

 Vlil. figs. 168, 169.) 



Trichobasis Betse, Lev. Beet-leae Rust ; spots yellow; 

 heaps subrotund and oval, scattered and concentric, on the upper 

 surface; epidermis at length bursting; spores subglobose, shortly 

 pedicellate, brown. — On the leav< s of Beet. August and Sep- 

 tember. Common. 



Trichobasis Fabse, Lev. Bean Rust ; spots obliterated ; 

 sori subrotund and oval; bullate, scattered and aggregate, sur- 

 rounded by the ruptured epidermis ; spores ovoid, brown. — On 

 Beans. August and September. Common. 



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