APPENDIX. 209 



Trichobasis Artemisisa, B. Mugttoiit Eust ; spots ob- 

 literated, brownish on the opposite side ; sori sub.dobose and 

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

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

 Not common. 



Triehobasis Labiatarum, Lev. Mint Rust; spots 

 yellowish and brm\qi; sqri subrotund, scattered, subaggregate, 

 on the under surface ; epidermis ruptured ; spores subglobose, 

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



Triehobasis Lyehnidearum, 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- 

 phyllacece. Summer and Autumn. 



Triehobasis Umbellatarum, Lev. Hemlock Eust; 

 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 maculatuni^ 

 Apium graveolens, and other TJnibellifercB. August and September. 



Triehobasis Heraclei, B. Hogweed Bust ; 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 spondyliicm, June 

 and July. 



Triehobasis Hydroeotyles, Cooke. Elukewort 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 Ilydrocotyle 

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

 VUL figs. 168, 169.) 



Triehobasis Betse, Lev. Beet-leaf 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. 



Triehobasis Fa^bse, 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. 



Triehobasis Galii, Lev. Bedstraw Rust ; spots yellow- 

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

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



