1915] CURRENT LITERATURE 241 
M.B. produced uredospores and teleutospores on Carex stenophylla Wahlenb. 
Aecidiospores from Euphorbia virgata W.K. infected Caragana arborescens L., 
Trifolium agrarium L., and Lotus corniculatus L., but none of the species 
usually inhabited by U. Genistae-tinctoriae Pers. This result seems to indicate 
that the species of Uromyces on Caragana is a biological form distinct from 
U. Genistae- tinctoriae. With aecidiospores from the same host from another 
were infected. This form proved to be Uromyces striatus Schroeter. A third 
form with its aecidia likewise on Euphorbia virgata produced reign and 
teleutospores (Uromyces Astragali Opiz.) on Astragalus criticus Lam A. 
sanguinolentus M.B. Aecidiospores of Uromyces caryophyllinus (Schrank) 
int. from Euphorbia Gerardiana Jacq. infect ianthus arenarius L., D. 
campestris M.B., D. capitatus DC., D. caryophyllus, and D. pseudomeria M.B. 
_ Aecidiospores from other plants of Euphorbia Gerardiana produced an abun- 
ance of uredospores and teleutospores of Uromyces Schroeteri De Toni on 
spores thus derived seem to show that the specialization of forms in this 
species of crown rust is Not so well marked as former experiments appeared to 
indicate. 
Lonc’s’ experiments dealt with three species of rusts on members of the 
genus Andropogon. He reports the-following successful cultures. Teleuto- 
spores of the type of Puccinia Andropogonis Schw. from Andropogon furcatus 
Mull. collected in Texas produced aecidia on Oxalis corniculata L. Teleuto- 
spores of Puccinia Ellisiana Thiim. from Andropogon virginicus L. collected in 
Virginia produced aecidia on Viola fimbriatula Sw., V. hirsutula Brainard, and 
V. papilionacea Pursh. Viola sagittata L., which was not infected, had been — 
successfully infected in a former experiment. Aecidiospores from V. sagittata 
and V. papilionacea reinfected Andropogon virginicus. In 1910 the author had 
made successful sowings of teleutospores on Penstemon. These two results 
seem to indicate that two forms of Puccinia occur on Andropogon virginicus. 
Finally, teleutospores of Uromyces Andropogonis Tracy from Andropogon 
virginicus L. collected in Virginia infected Viola primulifolia L. and V. cucullata 
Ait. but none of the other violets. Aecidiospores from V. primulifolia rein- 
fected Andropogon virginicus. In conclusion, the author points out the close 
similarity between Puccinia Ellisiana and Uromyces Andropogonis, which 
differ from each other only in the number of cells of the teleutospore. 
During 1913 no very extensive series of cultures has been reported, but 
small additions to our knowledge of the biological relations of hitherto isolated 
forms come from many sources and include studies in several genera. In this 
7 Lone, W. H., Notes on three species of rusts on Andropogon. Phytopathology 
2:164-171. 1912. 
