£9 British Uredinee and Ustilaginee. 
sEcidiospores on Ranunculus ficaria, repens, and bulbosus, 
March to May. 
Teleutospores on Poa ¢rivialis, pratensis, and annua, April 
to July. 
BioLoGy.—This species is said to occur on P. nemoralis as well 
as on P. pratensis and ¢rivialzs, but I have been unable to produce it 
on the first mentioned, although I have done so several times on the 
two latter. In one serial culture in which the Uromyces from P. 
trivialis was applied to R. ficaria, (2) repens, and (3) bulbosa, the 
zecidium was produced on the two latter, but not on the first named. 
No result was obtained on R&. auricomus and acris. At present it is 
safer to say that Ur. oe has its xcidiospores on R. ficaria, repens, 
and apparently on &. ddbosus (because I do not like to be too con- 
fident about one culture), and that it has its teleutospores on Poa 
trivialis and pratensis. I have failed more than once in producing 
the zecidium on &. ficaria from the Uromyces on P. ¢rzvdalis, although 
I have always succeeded with teleutospores from P. “vialés on R. 
repens, and I think it quite possible that there may be two species, the 
one having its teleutospores on P. ¢révialzs, and its zcidiospores on 
R. repens, the other with its teleutospores on P. Zratensis, and its 
zecidiospores on &. ficayza, Further cultures can alone determine 
the truth of this surmise. 
Uromyces junci. (Desm.) 
Aicidtospores—Pseudoperidia circinating, cup-shaped, with whitish 
torn edges. Spores polygonal, irregular, globose or elongate, 
pale orange, smooth, 15-23 in diameter. 
Uredospores—Sori on brown or yellowish elongated spots, 
scattered, irregular, rounded or elongated, confluent. Spores 
rounded or elliptical, echinulate, pale brown, 17-28 X 15-174. 
Teleutospores—Sori round or elongate. Spores dark brown, 
usually elliptical or cuneiform, with much thickened and often 
attenuated summits, deep brown, smooth, 20-40 x I5- ap 
Pedicels long, thick, pale brown. 
Synonyms. 
Uromyces junci (Desm.). Winter in Rabh., “ Krypt. Flor.,” 
vol. i. p. 162. ; 
Puctinia junc, Desm. “Plant. Crypt. Edin.,” 2nd edit. 
No. 170. 
cidium zonale, Duby. “ Bot. Gall.,” vol. ii. p. 906. 
