KUEHNEOLA 301 
and paler, when old whitish; spores globose, obovate or irregu- 
larly polygonal, closely verruculose-echinulate, yellow, about 
20—26 w; pores indistinct (? three or four). 
Teleutospores. Sori hypophyllous, singly or in little round- 
ish groups, but never confluent, }—4 mm., pulvinate, yellowish- 
white; spores cylindrical-clavate, flattened and _ irregularly 
coronate at the summit, of 2—13 (mostly 5 or 6) trapezoidal 
cells which are smooth and colourless, each measuring 17—30 
x 15—25 w; the wall of each cell becomes thicker from below 
upwards, and the upper edge is irregularly undulated; the 
germ-pore is situated in one of the finger-like projections at 
the upper edge of each cell; pedicels very short, sometimes 
wanting; each cell is really a perfectly distinct spore. 
On Rubus fruticosus. Not rare; Taunton, Hereford, 
Worcestershire, Woolmer, New Forest, North Wootton, Ayrshire, 
Ireland, etc. Teleutospores, September—November. (Fig. 227.) 
The life-history of this species is imperfectly known. The uredospores 
may precede the teleutospores, but may also be found simultaneously with 
them and (presumably the secondary uredospores) even in the same sorus. 
The primary uredospores seem to occur in chains, represent zecidiospores, 
and probably germinate at once. The teleutospores germinate im situ on 
the leaves as early as the beginning of September. Juel, who experi- 
mentally demonstrated the connection of the two spore-forms, suggested 
that some uredospores survive the winter and germinate in the spring ; 
J. Miiller and S. Strelin state the same of the secondary uredospores. 
This species is said to be found on Rubus caesius ; it occurs on many 
species of Hubus in North America. The name given by Arthur 
(K. Uredinis) rests upon a. (probably true) idea that the teleutospores 
constitute the fungus named by Link Ozdiwm Uredinis and placed among 
the Hyphomycetes : see Sacc. Syll. iv. 16. 
DISTRIBUTION: Europe, North America. 
2, Kuehneola Tormentill# Arthur. 
Phragmidium Tormentillae Fckl. Symb. Myc. p. 46. Plowr. Ured. 
p. 222. Fischer, Ured. Schweiz, p. 414, f. 288. Sace. Syll. vii. 
“744. Sydow, Monogr. iii. 105. 
P. Potentiliae-canadensis Dietel in Hedwig. Beibl. xlii. 179. Sydow, 
Monogr. iii. 106, f. 48. 
Kuehneola Tormentiliae Arthur, Res. Sci. Congr. Vienn. p. 342 (1904). 
&. obtusa Arthur, N. Amer. Fl. vii. 185 (1912). 
