112 University of California Publications in Botany [VOL. 7 



22. Hyalopsora laeviscula (Diet, and Holw.) Arthur. II, III 



Erythea, vol. 2, p. 127, 1894; Arthur, N. A. Flora, vol. 7, p. 113, 1907. 

 On Polypodium californicum Kaulf., Mount Tamalpais, type col- 

 lections. 



23. Hyalopsora Polypodii (DC) Magnus. I, II, III 



Fl. franc., vol. 6, p. 81, 1815 ; Magnus, Ber. deut. bot. Ges., vol. 19, p. 582, 

 1901. 



On FiUx fragilis (L) Underwood, Humboldt County, King's River 

 Canon (Holway). 



KUEHNEOLA MAGN. 

 Bot. Centralbl., vol. 74, p. 169, 1898. 



Uredinia definite, erumpent, usually with paraphyses; uredinio- 

 spores borne singly on pedicels, usually pale or colorless ; telia erum- 

 pent, without paraphyses; teliospores three- to seven-celled, with 

 transverse septa. 



24. Kuehneola uredinis (Link) Arthur. 0, II, III 



Willd. Sp. Plant, vol. 6, p. 123, 1824; Arthur, N. A. Flora, vol. 7, p. 186, 

 1912. 



On Rubus vitifolius Cham, and Schlecht., reported by Arthur from 

 California but not seen by the writer. 



KUNKELIA ARTHUR 

 Bot. Gaz., vol. 63, p. 504, 1917. 



This genus is based upon the fact, first shown by Kunkel (Bull. 

 Torr. Bot. Club, vol. 40, p. 361, 1913, Am. Jour. Bot., vol. 1, p. 37, 

 1914), that the entire life cycle consists of a caeomoid stage associated 

 with pycnia, the spores of which germinate like teliospores. It is not 

 distinguishable morphologically from the aecial stage of the genus 

 Gymnoconia, but the aecial spores of the genus last named germinate 

 like true aecia spores, and there is an alternate stage not distinguish- 

 able from the telia of the genus Puccinia. 



25. Kunkelia nitens (Schwein) Arthur. 0, I 

 Bot. Gaz., vol. 63, p. 504, 1917. 



On Rubus vitifolius Cham, and Schl., Santa Rosa, on cultivated 

 blackberry, Orange, Berkeley, Chico (Copeland), Glendora (Baker), 

 Long Beach (Bethel). This is the widely distributed "orange rust" 

 of the blackberry formerly known as Caeoma nitens. 



