APPENDIX. 207 



Lecythea Saliceti, Lev. Common Willow Rust; spots 

 yellowish ; sori subrotuud, 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. 



Lecythea Baryi, Eerk. De Bary's Eust; 'sori few; 

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

 leaves of Brachypodium pennaium. Very rare. 



Lecyttiea Valerianse, Eerk. Valerian Eust ; spots 

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

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

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

 August. 



* * Spores invested. 



Lecythea gyrosa, Eerk. Einged Eust ; spots obliterated ; 

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

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

 pale. — On the upper surface of Easpberry and Eramble leaves, 

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

 September. (Plate VHI. figs. 162-164.) 



* * * Spores concatenate. 



Lecythea Caprsearum, Berk. Sallow Eust ; 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. Yery common. (Plate VIII. figs. 

 160, 161.) 



Lecythea Lini, Eerk. Elax Eust ; 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.) 



TiiiCHOBASis, 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. Eound Corn Eust; 

 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.) 



