Arthur : Cultures of Uredineae 
75 
fixity. The telia are on Agropyron, Elymiis, and Bromus chiefly 
and the aecia on Clematis, Thalictrum, Aqnilegia, Anemone, and 
probably other Ranunculaceous hosts, and possibly on some hosts 
of other families. 
7. PucciNiA MONOiCA (Peek) Arth. — In the report of cultures 
for 1911-® record was made of sowings of teliospores from Trise- 
tum subspicatnm made June 20 upon two plants of Arabis (grown 
from Colorado seed), one plant of which indicated infection by a 
pathological change into a glomerate mass of rosettes, somewhat 
paler than normal. In this condition the plant passed the winter. 
Early in spring it began to send up a half dozen or more shoots 
instead of the usual single shoot of normal plants. Pycnia first 
were seen March 23, 1912, scattered over the considerably drawn 
shoots. Before there was time for the aecia to mature the plant 
accidentally died. 
Freshly gathered plants of an A ro 5 i.y bearing aecia, obtained May 
13 at Palmer Lake, Colo., were received from Mr. Bethel, and 
aeciospores from them sown May 18 on leaves of Koeleria cristata 
and Trisetum subspicatnm. Infection occurred only on the Koel- 
eria, uredinia first being noticed June 18, and telia June 24. 
There is no present need of adding to the general discussion 
of this species given in the last report of cultures.** We have 
now grown the rust from both aeciospores and teliospores, and 
shown that it occurs on both Trisetum and Koeleria, with some 
indication of biological races. 
8. Uromyces perigynius Halst. — ^A collection on Carex in- 
tumescens, made by Dr. Charles E. Fairman at Lyndonville, N. Y., 
was sown April 24, on Aster paniculatiis, Solidago canadensis, 
Erigeron annuus, Enthamia graminifolia, and Onagra biennis. 
On May 7 pycnia began to show in great abundance on the Aster, 
followed on May 10 by aecia. On the Solidago a few pycnia 
appeared May 8, but no aecia developed, although the host plant 
was in good condition. 
In former cultures*® material on this host from Nova Scotia 
produced infection on Aster, but not on Solidago. ^Material on 
23 Mycol. 4: 60. 1912. 
24 Mycol. 4: 59. 1912. 
25 See Jour. Myc. 10: 15-17. 1904; Mycol. 4: 21, 22. 1912. 
