ON COMPOSITA 149 
On Hypochoeris radicata. Not uncommon. July—Sep- 
tember. The records from other countries include all the three 
British species of Hypochoeris. Only uredospores were seen 
in British specimens. (Figs. 100, 101.) 
e / = 
i 
\ 
Fig. 100. P. Hypochoeridis. Fig. 101. P. Hypochoeridis. Teleuto- 
Uredospore (British) on spores and uredospore, on H. glabra 
H. radicata. (Berlin, ex herb. Sydow). 
This species, which has been often stated to be a Brachypuccinia, differs 
from most others of the type of P. Mveracii in having two kinds of 
uredo-sori—the primary ones 1—2 mm. wide, and only on the leaves, the 
secondary ones conspicuously smaller, almost punctiform. In this respect 
it approaches P. Cyani and P. obtegens, but Jacky showed that in his 
cultures it did not produce spermogones (Centralbl. f. Bakter. 1907, xviii. 
83), as they do. The alleged punctations of the teleutospores were 
invisible in all the specimens I have seen. 
DIsTRIBUTION: Europe, Siberia, North America, Chili, 
Australia. 
24. Puccinia Leontodontis Jacky. 
Puccinia Hieracti Plowr. Ured. p. 184 p.p. 
P. Leontodontis Jacky, Composit.-Puccin. p. 75. Sydow, Monogr. i. 
114. Fischer, Ured. Schweiz, p. 281, f. 182. 
Uredospores. Sori amphigenous, but chiefly hypophyllous, 
scattered, not confluent, minute, punctiform, surrounded by the 
cleft epidermis, cinnamon; spores globose to ellipsoid, echinu- 
late, brown, 25—32 p diam. or 27—35 x 24—27 p, always with 
two opposite germ-pores above the equator. 
Teleutospores. Sori similar, but darker-brown; spores 
variable, ellipsoid to oblong or obovate, rounded at both ends, © 
not thickened above, not constricted, delicately verruculose or 
