APPENDIX. 207 



Leeythea Saliceti, Lev, Common Willow Rust; spots 

 yellowish ; sori subrotund, solitary, or in circles, surrounded by 

 the ruptured epidermis ; barren spores subglobose and pedicellate 

 or pyriform ; fertile spores subglobose, orange. — On the under 

 surface of Willow-leaves, Autumn, Common. 



Leeythea Baryi, Berk. De Bary's Exist; "^sori few; 

 cystidia with an abrupt globose head; spores subglobose. — On 

 leaves of Brachypodium pennaium. Very rare. 



Leeythea Valeriange, Berk. Valerian KrsT ; spots 

 yellowish ; sori subrotund, small, confluent, sometimes circi- 

 nating; epidermis at length bursting; spores reddish -brown, sub- 

 globose or clavate, shortly pedicellate. — On Valeridiia officinalis. 

 August. 



* ^' Spores invested. 



Leeythea gyrosa, Berk. Hinged Rust ; spots obliterated ; 

 sori minute, confluent, and forming a small distinct ring; epi- 

 dermis bursting ; spores globose and elongato-pyriform, yellow or 

 ;^ale. — On the upper surface of Raspberry and Bramble leaves, 

 forming a more or less perfect ring with the centre unoccupied. 

 Septeinber. (Plate VIII. figs. 162-164.) 



* * * Spores concatenate. 



Leeythea Caprsearum, Berk. Sallow Rust ; spots 

 obliterated, yellow on the opposite side ; sori varied in form, here 

 and there confluent, surrounded by the ruptured epidermis; 

 barren spores subglobose and pyriform, pedicellate ; fertile spores 

 subglobose, dirty yellow.— On the under surface of the leaves 

 of Sallows. June to August. Very common. (Plate VIII. figs. 

 160, 161.) 



Leeythea Lini, Berk, Flax Rust"; spots yellowish ; sori 

 subrotund, scattered, surrounded by the ruptured epidermis ; 

 spores globose or pyriform, sometimes pedicellate. — On Linum 

 catharticum. July. Not uncommon. (Plate VIII. figs. 165 — 

 167.) 



TmcHOBASis, Lev. 



Spores free ; attached at first to a short peduncle, which at 

 length falls away. — Berk. Outl., pp. 332. 



* Spores yellow. 



Trichobasis rubigo-vera. Lev. Round Corn Rust; 

 spots yellow, heaps oval, scattered, generally on the upper 

 surface ; epidermis at length bursting longitudinally ; spores sub- 

 globose, reddish brown, easily dispersed. — On Grasses and Corn. 

 Throughout the Summer. Very common. (Plate VII. figs. 140— 

 142.) 



