302 XENODOCHUS 
Spermogones. Epiphyllous, in little groups. 
Uredospores. Sori of two kinds, primary epiphyllous, sur- 
rounding the spermogones, secon- 
dary hypophyllous, scattered, small, 
(.) round, punctiform, orange, sur- 
) rounded byafew clavate paraphyses; 
spores spherical to obovate, finely 
echinulate, reddish-orange, 20— 
C | 23 x 14—20 p. 
Teleutospores. Sori hypophyl- 
( } lous, similar, but bright-brown; 
spores cylindrical, fusiform or cla- 
vate, of 2—7 (mostly five) cells, 
often curved, thickened at the apex 
Fig. 298. K. Tormentillae like many Puceiniae, slightly con- 
Teleutospores. stricted, tapering below, smooth, 
sienna-brown, 52—140 x 18—24 p; 
epispore thin, with one germ-pore in each cell; contents orange; 
pedicels varying in length, persistent, not much widened below. 
On Potentilla Tormentilla (=P. erecta) and possibly on 
other species of the genus. Very rare. September, October. 
(Fig. 228.) 
This species resembles a Puccinia in some respects, especially in the 
thickening of the apex of the teleutospores, and the position of the solitary 
germ-pore of each cell; the wall of each cell becomes darker upwards, the 
lower cells being nearly colourless, and the uppermost a pale clear brown, 
all quite free from any warts or projections. They can germinate in 
autumn (September) like those of K. albida. Dietel says that the 
uredospores and their mycelium can survive through the winter. 
DIsTRIBUTION: Europe, North America. 
XENODOCHUS Schlecht. 
Auteecious. 
Ceomata large, indefinite, without paraphyses or peridium. 
Uredospores absent, represented by the secondary smaller 
ceomata. Teleuto-sori similar, often on the same mycelium; 
teleutospores of very long chains of cells, not verrucose. 
