Arthur: Cultures of Uredineae 
83 
A sowing of telia was made April i on Clematis Drummondii, 
C. Douglasii, C. virginiana, Aqtiilegia flavescens, A. canadensis, 
Thalictrnm Fcndleri, and T. dioicum. Abundant infection oc- 
curred on the first named host, but on no others, pycnia appear- 
ing April 5, and aecia April i8. 
The results are in accord with the cultures of 1912, reported 
above under number 6, but indicate another race not met with 
before. 
22. Uromyces perigynius Halst. — A collection of this species 
on Carex tribidoides made at French Lick, Ind., by Mr. Ludwig 
and the writer, was sown April i on Aster panictdatus, A. Drum- 
mondii, A. Tweedyi, Solidago canadensis, S. rugosa, and Euthamia 
graminifolia. Infection was secured only on Aster Tweedyi, and 
then so sparingly that it was overlooked until April 8, when the 
aecia were observed. Cultures for 1912 are reported above 
under number 8. 
This species of rust from other Carex hosts has previously been 
been grown” on two other species of Aster, and five species of 
Solidago. 
23. Uromyces Scirpi (Cast.) Burr. — Material on Scirpus fluv- 
iatilis, sent by Mr. E. T. Bartholomew from Madison, Wis., was 
sown April 22 on Sium cicutaefolium, giving rise to a few pycnia 
May 5, but without further development. Another similar sow- 
ing April 24 gave rise to an abundance of pycnia May 5, and 
aecia May ii. 
The former cultures®® with American material have been on 
Cicuta macidata. 
24. Gymnosporangium nidus-avis Thax. — Telial material on 
Juniperus virginiana, gathered by Dr. Fromme at Woods Hole, 
Mass., was sown May ii on Amelanchier vulgaris, giving rise to 
pycnia May 19, and a great abundance of aecia June 20.®® 
25. Gymnosporangium Botryapites (Schw.) Kern. — Telial 
material on Chamaecyparis thyoides sent by Dr. Fromme from 
Lakehurst, N. J., was sown May 6 on the leaves of Amelanchier 
canadensis and Aronia arbutifolia, with no infection on Aronia, 
31 Jour. Myc. 10; 15. 1904; and Mycol. 4: 32. 1912. 
38 Jour. Myc. 13: 199. 1907; 14: 17. 1908; and Mycol. 1: 237. 1909. 
39 For previous cultures see Jour. Myc. 14: 19. 1908; Mycol. 2: 230. 
1910; 4: 25 and 56. 1912. 
