114 University of Calif oniia PuhUcaticns in Botany [Vol.7 



30. Melampsora occidentalis Jackson. II, 111 



Pliytoi)atliolog5', vol. 7, p. 354, 1917. 

 On Fop III US trichocarpa T. and G., Siskiyou, Trinity, and Shasta 

 counties (Meinicke) ; on P. Frcmontii Wats., San Bernardino (Par- 

 ish). These specimens were formerly referred to Melampsora Medusae 

 Thiini., from which the species named above differs in a number of 

 minor characters. Still another specimen collected b}^ Bethel on 

 Populus alha L. at San Jose, which has also been referred to M. 

 Medusae, has not been satisfactorily named. 



MELAMPSOROPSIS (schroet) abthub 

 Result. Sei. Coug. Bot. Vienne, p. 338, 1908. 

 Aecia erumpent but laterally flattened ; peridium firm. Aecio- 

 spores ellipsoid to globoid, walls colorless. Uredinia erumpent, pul- 

 verulent. Telia waxy; teliospores in chains, one-celled, oblong or 

 cuboid, walls colorless. 



31. Melampsoropsis Piperiana Arthur. II 



N. A. Flora, vol. 7, p. 120, 1907. 

 On Khododendron calif ornicum Hook, Humboldt County. 



32. Melampsoropsis Pyrolae (DC) Arthur. 0, I, II, III 



Fl. franc, vol. (5, p. 99, 1815; Arthur, Result. Sci. Cong. Bot. Vienne, 

 p. 338, 1906. 



The aecial stage not rejDorted from California but collected by 

 Hedgcock on Picea Engelmanii Parry. The genetic connection of this 

 species with Peridernmmi conorum Piceae was shown by Fraser 

 (Mycologia, vol. 4, p. 183, 1912). 



On Pyrola uliginosa Torr., Sisson (Holway). 



NEORAVENELIA long 

 Bot. Gaz., vol. 35, p. 131, 1903. 



Aecia erumpent, without peridium ; aeciospores in chains, wall 

 colored. Uredinia erumpent ; urediniospores borne singly on pedicels, 

 wall colored. Telia erumpent; teliospores like those of Ravenelia. 



33. Neoravenelia Holwayi (Dietel) Long. 0, I, II, III 



Hedwigia, vol. 33, p. 61, 1894; Bot. Gaz., vol. 35, p. 131, 1903. 



On Prosopis jidi flora (Sw.) DC, San Bernardino County (Mc- 

 Clatchie). 



