410 UREDINEAE. 



Aec. phillyreae D. C. On species of Phillyrea (Britain ?). 



Aec. frazini Schwein. This causes serious damage in America to the 

 foliage of Fraxinus viridis and Fr. americana.^ It has also appeared in 

 Europe on the latter species introduced from America. 



Aec. nympbaeoidis D. C. On leaves of Limnanthemum, Niiphar, and 

 Nymphxea. (Britain.) 



Aec. pedicularis Lib. On Pedicidaris. (Britain.) (See Puce, paludosa, 

 p. 351.) 



Aec. pmnellae Wint. On Prunella vulgaris. (Britain.) 



Aec. euphorbiae Gmel. is found on many species of Euphorbia. It is 

 probably the Aecidium-iorm of Uromyces pisi. (Britain and U.S. America.) 



Aec convallariae Schum. (Britain and U.S. America). Probablj' « 

 provisional species-name for aecidial forms found on Cmivallaria, Polygon- 

 atum, Paris, Lilium, etc. (See under Puccinia.) 



Aec. an Desm. {Aec. dracontii Schwein.) is found on species of Arum. 

 (Britain and U.S. America.) (See Puce, pkalaridis, p. 349.) 



The following species are found on Acacia and seem to have 

 strong affinity with the genus Ravenalia: 



Aec. esculentum Barcl. produces deformation of twigs of Acacia eburnea 

 in India. Twigs of this kind, likewise shoots deformed by Aec. wticae rar. 

 himalaye^ise Barcl., and pine-shoots deformed hy certain species of Perider- 

 mium, are eaten in various parts of the world. 



Aec. acaciae (Heun.) on Acacia etbaica in Abyssinia. This is said by 

 Magnus to cause witches' broom deformation. 



Aec. Scbweinfurtbii Henn. causes malformation of fruits of Acacia 

 Fistula in Africa. 



Aec. omamentale Kalch. causes curvature of shoots of Acacin hon-ida 

 at the Cape. 



The following are some of the more important species 

 recorded for North America only : 



Aecidium dicentrae Trel. Leaves of Dicentra and Cm-ydalis. 

 Aec. monoicum Peck. Leaves of Arabis. 

 Aec. drabae Tr. et Gall. 

 Aec. lepidii Tr. et Gall. 

 Aec. proserpinacae B. et C. 

 Aec. Mariae-Wilsoni Peck. 

 Aec. Petersii B. et C. 

 Aec. cerastii Wint. 



Aec. pteleae B. et C. On leaves of Ptelea trifuliuta. 

 Aec. xanthoxyli Peck. 



Aec. splendens Wint. In the cotyledons of Croton monanthogynns. 

 Aec. aesculi Ell. et Kell. 



Aec. psoraleae Peck, and Aec. onobrychidis Burr. On .species of Psoralea. 

 ^Ponud, American NaturalUl, 1S88. 



■On species of Viola. 



