138 Proceedings of Indiana Academy of Science 
velopment of the rust on this plant was noted, the new branches being 
rust free. 
Plant 3-2. 
This plant showed pyenia April 7th on the secondary branches aris- 
ing from the axils of the cotyledons. Upon April 19th, pyenia and 
aecia showed on the secondary branches. Following this throughout the 
summer up until September 3d, the plant continued to send out new 
branches most of which were covered with pycnia and aecia. No other 
stages developed. 
Plant 5-4. 
This plant first showed rust on April 19th, when pycnia appeared 
covering the capsules and leaves of the two secondary branches. On 
April 27th, pyenia also appeared upon one capsule of the central shoot 
and aecia appeared intermixed with the pycnia on the secondary 
branches. Part of the new branches, as they developed during the sum- 
mer, showed pycnia and aecia covering the leaves and capsules. 
Plant 6-5. 
On April 19th, pycnia and aecia appeared on the leaves and cap- 
sules of the secondary branches, and on May 4th, pyenia showed on 
the terminal capsules of the main shoot. On May 5th, uredinia ap- 
peared scattered over the plant. Shortly afterward, the plant died. 
Plant 9-4. 
On April 19th, pyenia and aecia appeared on the capsules and the 
leaves of the secondary branches. On April 27th, two of the capsules 
of the main shoot showed pyenia, followed by aecia May 4th. On May 
4th, aecia apparently without pycnia appeared upon the leaves of two 
new branches. On May 11th, uredinia appeared scattered over the 
plant. About June 3d, the plant died without showing any further 
development of the rust. 
Plant 4-4. 
¢ 
On April 19th, aecia apparently unaccompanied by pycnia appeared 
on the capsules of the secondary branches. No further development of 
the rust occurred. 
Plant 4-2. 
On May 11th, this plant showed pyenia on the capsules of the main 
shoot. On July 3d, several new branches also had pyenia. No further 
development of the rust occurred. 
In all, seven of the sixty plants showed infection either with pyenia 
or aecia or with both. As indicated above, there was some variation as 
to the manner in which infection showed and developed. In some cases 
it appeared first on the terminal capsules of the main shoot, following 
later on the secondary branches. In some cases the plant outgrew the 
infection and became rust-free with the dying of the infected branches. 
