Feb., 1901] 
Kellerman — Botanical Literature. 
63 
NOTES FROM BOTANICAL LITERATURE. 
W. A. Kellerman. 
A very interesting Bulletin of eight pages on the Chrysanthemum 
Rust has been issued by J . C. Arthur, botanist of the Indiana Agri- 
cultural Experiment Station. It is No. 85, and is dated October, 
1900. Dr. Arthur gives a general account of Uredineae or Rusts, 
explaining that the typical forms have three prominent sets of 
spores, namely (1) aecidiospores, usually red or orange in little white 
cups, ( 2 ) uredospores, generally of a rusty yellow color and abundant 
(hence the group name, Rusts), and (8) teleutospores, or the Winter 
spores, usually dark brown or black. He further states that only 
uredospores have yet been found in Europe and America, and since 
the fungus is an annual, it is puzzling to see how it escapes extermi- 
nation'in winter and spring when Chrysanthemum plants are latent. 
The] assumption that this was the well known and common 
Puccinia hieracii or Puccinia tanaceti he proves to be incorrect by 
inoculation experiments. Uredospores from Chrysanthemums he 
sowed on Chrysanthemums and obtained a crop of uredospores. 
Similar uredospores sowed on Dandelion, Burdock, and Ox-eye 
Daisy produced no infection ; uredospores from the latter hosts sown 
on Chrysanthemum likewise produced no infection. Uredospores 
from Dandelion sown on Dandelion produced uredospores. Others 
have tried similar experiments, using Tansy, Costmary, Orange 
Hawkweed, Giant Daisy, and Marguerite, besides the host plants 
named above, but the Chrysanthemum Rust refuses to grow on any 
of them. This Rust, which is common and well known on the 
Chrysanthemum in Japan, has been named Puccinia chrysanthemi 
by Rose. 
Disconnection with suggestions relative to combating the disease, 
Dr. Arthur says that “so long as the teleutospores do not make an 
appearance in this country, the careful cultivator may feel assured 
that a moderate amount of timely effort will enable him to rid his 
establishment of the Rust, if he is so unfortunate as to have it 
donatedlto himjby some careless florist. Observations made by the 
writer and others show that the tendency is for the disease to dis- 
appear of itself, to run its course in an establishment and die out, 
which is very likely to some extent due to the absence of teleuto- 
spores.” 
Bryology. — Mrs. Britton’s popular articles on the Mosses and 
how to study them, that have appeared from time to time, furnished 
the directions and incentive to many who before had taken little or 
no interest in this group of plants. Her purpose and plan are imi- 
tated and extended in a charming little book, that has been prepared 
