300 KUEHNEOLA 
several cells as in Phragmidium, but the wall is faintly coloured 
or colourless, and smooth; pores one in each cell, apical. 
This genus is not confined to Rosacee, being recorded on 
Malvacee in America, where also both the British species are 
found. It is not closely alhed to Phragmidium: the wall of 
the teleutospores and the germ-pores are quite different. But 
Tam also of the opinion that the two species included here are 
not in reality congeneric. 
1. Kuehneola albida Magnus. 
Uredo Milleri Schrét. Flor. Schles. iii. 375. Plowr. Ured. p- 256. 
Chrysomyxa albida Kiihn, Bot. Centralbl. xvi. 154 (1883). See also 
: Bull. Soc. Myc. Fr. xvii. 31. 
Phragmidium albidum Lagerh. Mitth. Bad. Bot. Ver. 1888, p. 44. 
Fischer, Ured. Schweiz, p. 415. 
Kuehneola albida Magn. Bot. Centralbl. Ixxiv. 169 (1898). 
K. Uredinis Arthur, N. Amer. Fl. vii. 186 (1912). 
Spermogones. Epiphyllous, clustered on small reddish spots. 
Fig. 227. K. albida. Uredospore and teleutospores. 
Uredospores. Sori, primary epiphyllous, yellow, often in 
rings surrounding the spermogones, secondary hypophyllous, seat- 
tered, occasionally on the calyx and stems, smaller, punctiform 
