532 
G. R. BISBY 
Aecia diffused, i. e., infection general. 
Morphological characters similar; correlated >> r 
species; aeciospores usually only to 20-2 i/z > < 
in length. 
Similar to above, except aeciospores often up to 
23-24 
Uredinia without peridium ; urediniospore-wall colored. 
Uredinia often gregarious on spots, 
Uredinia scattered; spots none; correlated. 
Uredinia with peridium; urediniospore-wall colorless. 
Characters similar. 
Telia within or below epidermis. 
Characters similar. 
Telia erumpent. 
Teliospores one-celled. 
Teliospores two-celled. 
Teliospore apex considerably thickened, 4-i2ju. 
Telia scattered, not upon spots. 
Characters similar; correlated. 
Characters apparently those of Puccinia 
Epilohii-U 
Telia gregarious, upon spots. 
Teliospores smaller, to 40 p. long. 
Teliospores to 50 long. 
Teliospores larger, to 60 jx long. 
Wall cinnamon-brown. 
Wall paler, especially below. 
Teliospore apex little thickened, 1.5-4 
Teliospore wall smooth, 3 n thick. 
Teliospore wall verrucose, 1.5-2 ix thick. 
Teliospores comparatively smaller, 13- 
18 by 27-37 M. 
Teliospores comparatively larger, 17-25 
by 30-44 IX. 
Uromyces plumbarius, 
Puccinia Epilobii-tetragoni, 
Puccinia Epilohii- Fleischeri 
Puccinia Veratri. 
Uredo oenothericola. 
Uromyces plumbarius, 
Puccinia Epilobii-tetragoni, 
{Puccinia luxurians, 
P. Krookii). 
Pucciniastrum pustulatum, 
Pucciniastrum Circaeae. 
Pucciniastrum pustulatum, 
Pucciniastrum Circaeae. 
Uromyces plumbarius. 
Puccinia Epilobii-tetragoni, 
Puccinia Epilohii- Fleischeri. 
( Puccinia luxurians 
Puccinia Krookii). 
Puccinia Circaeae. 
Puccinia Fuchsiae. 
Puccinia Jussiaeae 
{Puccinia Ludwigiae). 
Puccinia gigantea. 
} Puccinia sphaeroidea. 
Puccinia scandica, 
Puccinia Epilobii. 
Key to species and races, based upon host and including geographic 
distribution 
Gayophytum; N. A., S. A.; O, I, II, III, Puccinia 
Gayophyfi race of Puccinia Epilobii-tetragoni. 
