548 
G. R. BISBY 
exists. The Puccinia Oenothera race differs from the Uramyces 
Oenotherae race only in the possession of two-celled teliospores. 
Puccinia Epilohii-tetragoni as a whole may well be said to be correlated 
with Uromyces plumharius as a whole, as well as with Puccinia Epi- 
lohii-Fleischeri. The aecia in all three species are very similar to 
those of Puccinia Veratri, Possible correlations with short-cycled 
species of Puccinia are noted further with the discussion of such forms. 
These races are separated out on morphological grounds, chiefly. 
Klebahn states (/. c.) that the biological identity of the forms upon 
different species of Epilobium, awaits proof; certainly the biological 
status of the collective species as here described, awaits study. The 
ultimate biological or physiological races may or may not follow these 
indicated morphological races; but it seems convenient at this time 
tentatively to designate such races. 
Puccinia Krookii P. Henn., Ann. Naturhist. Hofmus. Wien for 
1900: I, described as on Epilobium sp., Harrysmith, Natal, and 
Puccinia luxurians Dietel & Neger, Engler's Jahrb. 24: 158. 1900, on 
Oenothera mutica, Cordillera de Santiago, Chile, present, in the descrip- 
tions, no distinctions that can be made use of in separating them 
from Puccinia Epilohii-tetragoni as here described. Both are listed 
in Sydow, Monog. Ured. Since no specimens are at hand for com- 
parisons, however, their status cannot definitely be decided. 
7. Puccinia Veratri Duby Bot. Gall. 2: 890. 1830. 
Literature: Holway, N. Amer. Ured. i: 21. 1905. Sydow, Monogr. Ured. 
i: 639. 1903. Winter, in Rabenh. Krypt. Fl. i: 184. 1881. Saccardo, Syll. 
Fung. 7: 665. 1888. Fischer, Beitr. Krypt. Schweiz 2^: 81. 1904. Oudemanns, 
Ann. Mycol. 2: 358. 1904. Tranzschel, Ann. Mycol. 7: 182. 1909. Klebahn, 
Krypt. Mark Brand. 5^: 338. 1914. 
0. Pycnia hypophyllous, scattered between the aecia, immersed, becoming 
brownish, globose or flask shaped, rather large, 1 12-144 M ii^ diameter by 128-175 M 
in height; ostiolar filaments 55-65 ix long; pycniospores many, oval, 0.5-1 by 1-3 n. 
1. Aecia hypophyllous, numerous, crowded often over the entire lower surface 
of the leaf, broad cupulate, 0.3-0.6 mm. in diameter; peridium white, much recurved, 
the margin lacerate; peridial cells rhomboidal or oblong, 16-21 by 21-30 ix, somewhat 
overlapping, the outer wall 3-5 fx thick, striate, the inner wall 3-6 n thick, verrucose; 
aeciospores roundish or oval, 14-18 by 16-24 m; wall light yellow, thin, I ^i, finely 
verrucose. 
On Onagraceae: 
Chamaenerion latifolium (L.) Sweet {Epilobium latifolium L.), British Colum- 
bia. 
