APPENDIX. 200 



Trichobasis Artemisise, B. Mugwort Kust ; spots ob- 

 literated, brownish on the opposite side ; sori subglobose and 

 oval, minute, scattered, on both surfaces ; epidermis soon rup- 

 tured ; spores subglobose, brownish. — On Artemisia vtdgaris, &c. 

 Not common. 



Trichobasis Labiatarum, Lev. Mint Rust ; spots 

 yellowish and brown; sori subrotund, scattered, subaggregate, 

 on the under surface ; epidermis ruptured ; spores subglobose, 

 brown. — On various Lahiatce. August to September. Common. 



Trichobasis Lychnidearum, Lev. Chickweed Rust ; 

 spots pallid yellowish ; sori subrotund plane, scattered on the 

 under surface, cinnamon, at length brownish ; epidermis ruptured ; 

 spores globoso-ovoid, sessile, or shortly pedicellate. — On Caryo- 

 phyllacea. Summer and Autumn. 



Trichobasis ITmbellatarum, 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 Coniiim maculatumy 

 Apium graveolens, and other Umlelllfera. August and September. 



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 Hemcleum spoiidylium. June 

 and July. 



Trichobasis Hydrocotyles, Cooke. Flttkewoet 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 

 l)rown ; epispore rough with minute tubercles. — On Hydrocotyle 

 vulgaris. Epping, July to September, 18G3 and 1864. (Plate 

 VIII. figs. 168, 169.) 



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

 neaps subrotund and oval, scattered and conceniric, on the upper 

 surface ; epidermis at length bursting ; spores subglobose, shortly 

 ]jedicellate, brown. — On the leaves 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. 



Trichobasis Galii, Lev. Bedstraw Rust ; spots yellow- 

 ish ; sori subrotund, aggregate, closed; spores globose, reddish. 

 — Un Galium verum, saxatile, &c. July and August. 



