PUCCINIASTRUM 365 
spores shortly ellipsoid or obovate, echinulate, orange, 18—21 x 
14; epispore rather thick, with indistinct 
germ-pores. y 
[Teleutospores. Sori similar, but indefinite, \ 
clear-brown; spores subepidermal, extracellular, 
cuneate, smooth, each divided into four cells . _ Fig. 272. 
: é P. Agrimoniae. 
by two longitudinal walls at right angles to Uredospores. 
one another, 30 x 21—30 u.] 
On Agrimonia Eupatoria. Uredospores common, July— 
September ; teleutospores, very rare everywhere, not yet found 
in Britain. (Fig. 272.) 
We owe our knowledge of the teleutospores to Tranzschel and Dietel ; 
see Engler u. Prantl, Natiiyl. Pflanzenfam. vol. i. pt. 1**, p. 24. Until 
they were discovered, the position of the 
fungus was quité uncertain. Klebuhn (see 
Zeitschr. f. Pflanzenkr. 1907, xvii. 149) 
proved that the parasite could maintain 
itself by over-wintered uredospores. 
DISTRIBUTION : Europe, Asia, 
North and South America. 
2, Pucciniastrum Circee Speg. 
Uredo Circaeae Schum. Pl. Sall. it. 228. 
Cooke, Micr. Fung. p. 217, pl. 7, 
f. 135, 136. 
Pucecinia Cireaeae Pers. ; Cooke, Handb. 
p. 507 p.p. 
Melampsora Circaeae Winter ; Plowr. 
Ured. p. 245. . 
Puceiniastrum CircaeaeSpeg. Dec.Myc. Fig. 273. P. Circaeae. a, half 
g 7: ‘ of a leaf of C. lutetiana, 
65. Sacc. Syl. vil. 763. Fischer, showing greipeont Gliehily 
Ured. Schweiz, p. 461, f. 302. enlarged); , uredospore 
x 600; ¢, part of peridium 
Uredospores. Sori hypophyllous, x 180; d, teleutospores, be- 
on paler patches bounded by veins, Br MMs ae a 
minute, yellowish, crowded, slightly confluent, surrounded by 
the epidermis and by a peridium which opens at the summit 
with a pore; spores ovate, 21—24 x 12—14,4; epispore thin, 
covered with minute distant warts, without evident germ-pores ; 
paraphyses wanting; peridium usually opening beneath a stoma. 
