UROMYCES. 337 



U. tuberculatus Puck. On Euphorbia exigua. 



U. proeminens Duby. On species of Euplwrhia. 



U. sparsus (Kunze et Schm.). On Spergularia, and Stellaria (Britain). 



U. Schroeteri De Toni. On Lychnis and Silene. 



U. cristatus Schroet. et Niessl. On Viscaria and Dianthus. 



U. ficariae (Schum.). On Ranunculus Ficaria (Britain and U.S. 

 America). 



U. astragali (Opiz). On Astrai/alus (U.S. America). 



U. genistas (Pars). On Genista, Cytims, Golutea, Galega, Garagana, 

 Onybrychis, etc. 



U. anthyllidis (Grev.). On Anthyllis and Lupinus (Britain). 



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



U. trigonellae Pat. On leaves of Trigonella Foenum-graecum, in Prance. 



U. glycyrrhizae Rabh. On Glycyrrhiza. 



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



U. rumicis (Schum.). On Rumex (Britain). 



U. aipinus (Schroet.). On Rumex alpinus. Magnus' has recently sep- 

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

 Uroniyces and Pucdnia. The uredospores arise from patches of sterigmata 

 without peridia or paraphyses ; they are unicellular and have lateral 

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

 patches composed of five or more layers of spores ; the spores have a 

 somewhat thickened apex, but no distinct germ-pore. 



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



U. terebinthi (D. C). On Pistacia and Rhus (U.S. America). 



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



U. ambiguus (D. C). On Allium Scorodoprasum. 



U. acutatus (Puck.). On Allium. 



U. veratri. (D. C). On Ve^-atrum. 



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

 in habit resembles a Phragmidium, 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 Alchemilla vulgaris. 

 Aecidia are unknown. 



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

 uredospores unknown. 



Uromyces excavatus (D. C.) Magn. On Euphorbia Ger- 

 ardiana, E. verrucosa, etc. 



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



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

 only in the latter locality. 



^Berichte d. deutsch. botan. Ges., 1896, p. 130. 

 Y 



