APPENDIX. 225 



oval, flattened, surrounded by the raptured epidermis ; spores 

 subglobose, smooth, brown.— On leaves of JllAusa CynapiwrA. 

 Condition of Puceinia Mtliiisce. 



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 

 Puceinia Conii. 



Trichobasis Impatientis, Rabh. Sori roundish, pul- 

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

 smooth. — On leaves of Impatiensfulva, &c. Condition oi Puceinia 



Trichobasis EumicTim, DC. Sori rounded, small, on 

 both surfaces, encircled by the ruptured epidermis, flattened ; 

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



Trichobasis TTmbellatarum, L^v. Hemlock Kust; 

 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 TJmbellifera. August and September. 

 Uredo spores of Puceinia Vmbelliferarum. 



Trichobasis Heraolei, B. Hogweed Rtjst; 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 Heracleum spondylium. June 

 and July. Uredo spores of Puceinia Heraelei. 



Trichobasis Hydroeotyles, Cooke. Pltjke-wort 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-leap 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 leaves of Beet. August and Sep- 

 tember. Common. 



Trichobasis Fabse, L6v. Bean Rtjst ; spots obliterated j 

 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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