UROMYCES. 337 



U. tuberculatus Fuck. On Eupliorhia e.vigua. 



U. proeminens J)ul)v. On species of Euphorhia. 



U. sparsus (Kimze et Schm.)- On Sperc/ularia, and Stellaria (Britain). 



U. Schroeteri De Toni. On Lychnis and Silene. 



U. cristatus Scliroet. et Niessl. On Visraria and Diantlnis. 



U. ficariae (Scliuni.). On Rantmcidus Ficaria (Britain and U.S. 

 America). 



U. astragali (Opiz)- On Axtmgalus (U.S. America). 



U. genistae (Pers). On (lenista, Ci/ti.it(s, Colutea, Galega, Caragana, 

 Onybrychis, etc. 



U. anthyllidis (Orev.). On Authyllis and Lupinns (Britain). 



U. lupini .Sacc. On Lupinus (U.S. America). 



U. trigonellae Pat. On leaves of Trigonella Foenum-gmecum in France. 



U. glycyrrhizae liabli. On Glycyrrhiza. 



U. cacaliae (I). C). On Adenostyles and Cacalia. 



U. rumicis (Scluun.). On Ihimex (Britain). 



U. alpinus (Scliroet.). On Rumex alpinus. Maynus ' has recently sep- 

 arated this as the single species of a new genus Schroeteriaster, allied to 

 Cromyces and Piiccinia. The uredospores arise from patches of sterigmata 

 without peridia or parajjhyses ; they are unicellular and have lateral 

 germ-pores. The teleutospores are also unicellular, and form lentil-shaped 

 patches composed of five or moi-e layers of spores ; the spores have a 

 somewhat thickened apex, but no distinct germ-pore. 



U. chenopodii (Duby). On Chenopodiiun and Schoheria. 



U. terebinthi (I). ('.). On Pistacia and Rhus (U.S. America). 



U. brevipes (B. et 11.). On Rhus Toxicodendron in America. 



U. ambiguus (1). ('.). On Allium Scorodoprasum. 



U. acutatus (Fuck.). On Allium. 



U. veratri. (D. O.). On Veratrum. 



U. alchemillae (Pers.) (Britain). This is a species which 

 ill habit resembles a Phra/jmidiitm, and is sometimes regarded 

 as a representative of ' a separate genus — Trachyspora (Fuck.). 

 It forms patches of reddish-yellow uredospores or brown teleuto- 

 spores on the lower surface of leaves of AlchcmiUa vulgaris. 

 Aecidia are unknown. 



(4) Pycnidia, aecidia, and teleutospores on the same host-'plant ; 

 2iredosj)ores unknoion. 



Uromyces excavatUS (D. C.) ]\Iagn. On Euphorbia Ger- 

 ard la na, E. rcrrucdsa, etc. 



U. Behenis (D. C). On Sile7ie. (Britain.) 



U. lapponicus Lagerh. On Astragalus in Norway and the Alps ; aecidia 



only in the latter locality. 



^ Berichte d. deutsch. botan. Oe-i., 1896, p. 130. 

 Y 



