1 2 8 BritisJi Uredinecu and Ustilaginca:. 



Uromyces Valerianae. (Schum.) 



^cidiospores — Pseudoperidia hypophyllous, rarely cauline, circi- 

 nate, scattered, cup-shaped, on the stem often elongate, 

 slightly prominent, with torn, erect, white edges. Spores 

 polygonal, finely echinulate, orange-yellow, 1 7-2 4/a in diameter. 



Uredospores — Sori small, reddish brown, rounded, scattered or 

 clustered, amphigenous. Spores spherical or elliptical, echi- 

 nulate, pale brown, 20-30 x 18-20/x. 



Telcutospores — Spots irregular, dark brown, sometimes forming 

 dendritic figures. Sori long covered by the epidermis, amphi- 

 genous, slightly elevated. Spores elliptical or ovate, summits 

 thickened, smooth, chestnut brown, 20-25 x 15-20/A. Pedi 

 eels short, deciduous. 



Synonyms. 



Uromyces Valeriana; (Schum.). Winter in Rabh., " Krypt. 

 Flor.," vol. i. p. 157. Cooke, " Grevillea," vol. vii. p. 137. 



Uredo vakriance, Schum. "Enum. Plant. Ssell.," vol. ii. p. 233. 



Lecythea Valeriana. Berk., " Outl.," p. 334. Cooke, " Hdbk.," 

 p. 523 ; " Micro. Fungi," 4th edit., p. 222. 



^cidium vakrianaceariun, Duby. Cooke, "Hdbk.," p. 540; 

 "Micro. Fungi," 4th edit, p. 196; " Eng. Flor.," vol. v. p. 370. 

 Johnst., " Flor. Berw.," vol. ii. p. 206. 



Exsiccaii. 



Berk., 349. Cooke, i. 63, 103; ii. 64, 88; " L. F.," 32, 56. 

 Vize, " Micro. Fungi Brit.," 132, 448 ; " Fungi Brit.," 68. 



On Valeriana officinalis and dioica. 



^cidiospores, May and June ; uredospores, June and July ; 

 teleutospores, July to September. 



Biology. — The presence of the mycelium in the leaves and stems 

 causes the ascidiospore-sori to be seated on the thickened spots. 



Uromyces parnassiae. (D. C.) 



yEcidiosporcs — Hypophyllous on pallid spots, in rounded patches. 



Pseudoperidia, tawny yellow, between urceolate and concave, 



with thick edges. Spores pallid. 

 Uredospores — Spores 'spherical, rough, 20-25//, in diameter. 



