226 MICROSCOPIC FUNGI. 



Trichobasis Galii, L6v. Bedstkaw Rust ; spots yellow- 

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

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

 spores of Pnecinia galiorum. 



Trichobasis fallens, Cooke, Cigvek Rust ; spots obli- 

 terated ; sori amphigenous, numerous, scattered, subrotund, 

 brown, surrounded by the remains of the ruptured epidermis ; 

 spores sub-ovate ; pedicels short, hyaline, evanescent ; epispore 

 vferrucDse. Uredo fallens, Besmz. — On leaves of Clover, &c. 

 September. Not uncommon. Uredo spores of Pam«ifl/fflWe«s. 



Trichobasis suaveolens, L6v. Thistle Rust ; spots 

 obliterated, yellow on the opposite side ; sori subrotund, nearly 

 plain, scattered, at length confluent, on the under surface, sur- 

 rounded by the ruptured epidermis; spores globose, brown. — cin 

 leaves of Thistles, frequently covering the whole under surface. 

 Summer. Common. (Plate Vil. figs. 151-153.) 



Trichobasis Polygonorum. B. Knoigkass Rtjst ; spots 

 red-yellow, widely effused ; sori subrotund, scattered, sometimes 

 forming a ring, epidermis at length bursting ; spores somewhat 

 ohovate, brovm. — On Polygonum aviculare, amphibium, and other 

 species. July to September. Common. Uredo spores of 

 Pwcinia Polygonorum. 



Trichobasis Vinese, B. Pbbiwinklb Rust ; spots yellow-, 

 ish ; sori small, subrotund, and oval, on the under surface, sur- 

 rounded by the ruptured epidermis ; spores oval, rather ovoid, 

 brown. — On leaves of ViTica major. May and June. Uredo 

 spores of Puccinia Vincae. (Plate VI. figs. 130, 131.) 



. Trichobasis Violarum, B. Violet Rust ; spots yellow- 

 ish ; sorj subrotund, scattered, generally on the 'under surface ; 

 epidermis ruptured, persistent ; spores subglobose, brown. — On 

 leaves and petioles of Violets. July. Not nncommon. Uredo 

 spores of Puccinia Viola. 



■ Trichobasis Farnassise, Cooke. Gkass op Paenassus 

 Rust ; on both surfaces of the leaves ; sori at first bullate, at 

 length rupturing the epidermis, scattered, often confluent; spores 

 : globose or nearly so, rather large, tawny-brown. — On Parnaasia 

 palustris. Irstead, Norfolk. September, 1864. 



: Trichobasis Epilobii, B^fk. Willow-heeb Rust; spots 

 yellowish; sori subrotund, scattered, surrounded by the ruptured 

 epidermis, often on the tinder surface ; spores subglobose, brown.' 



