326 COLEOSPORIUM 
Batheaston (C. E. Broome), Oxford Botanic Gardens (Herb. 
Bloxam). October. This is, of course, an introduced species. 
DISTRIBUTION : Europe. 
6. Coleosporium Rhinanthacearum Lév. 
Coleosporium Rhinanthacearum Lévy. Ann. Sci. Nat, 1847, p. 373. 
Cooke, Handb. p. 521; Micr. Fung. p. 218, pl. 8, f 176, 177. 
C. Euphrasiae Plowr. Ured. p. 252. Sace. Syll. vii. 754. 
This species is now divided into two, but on purely bio- 
logical grounds: no morphological distinctions worthy of the 
name can be discerned, and since the hosts are all closely allied 
it is perhaps best to retain the collective name, at any rate for 
a time. 
(1) CoLkrosporium EvupHRasiz Wint. 
Uredo Huphrasiae Schum. Pl. Sal. ii. 230, 
Coleosporium Euphrasiae Winter, Pilze, p.246. Fischer, Ured. Schweiz, 
p. 442. ° 
Peridermium Stahlii, Kleb. Zeitschr. f. Pflanzenkr. ii. 269, pl. 5, f. 5. 
Spermogones 
Aicidia 
spores oval or roundish, 20—30 x 15—24 p. 
Uredospores. Sori small, scattered, roundish, flat, yellowish- 
red; spores irregularly polygonal, densely verruculose, 20—24 
x 14—17 «; epispore thin, colourless. 
Teleutospores. Sori small, flat, roundish, red; spores pris- 
matic, orange, up to 105m long, 18—24y wide; epispore at 
summit about 14 thick. 
Like those of the allied species. cidio- 
AKcidia on leaves of Pinus silvestris; uredo- and teleutospores 
on ELuphrasia officinalis, Burtsia Odontites, Rhinanthus Crista- 
galli, July—September, very common. 
It is not certain that Bartsia can be infected from Luphrasia or 
Rhinanthus; no experiments ou that point are recorded. Klebahn proved 
abundantly that the parasite can be transferred from Rhinanthus to 
Euphrasia, but not to Senecio, Sonchus, or Tussilago. Wagner (Zeitschr. 
f. Pflanzenkr. viii. 261) infected Huphrasia with ecidiospores from Pinus 
montana. 
