Journal of Mycology 
"VOXjTUVTE 9 — 1903 
TABLE OF CONTENTS 
Blasdale — A Rust of the Cultivated Snapdragon... 81 
Morgan — A New Species of Sirothecium. 82 
Seymour — A Series of Specimens Illustrating N. A. Ustilaginese.. 83 
Morgan — Dictyostelieae or Acrasieae . 84 
Murrill — Historical Review of the Genera of Polyporacese. 87 
Durand — The Genus Sarcosoma in North America. 102 
Ellis and Kellerman — Two New Species of Cercospora. 105 
Kellerman — Another Much-Named Fungus.. 106 
Kellerman — Puccinia Eateripes an Aut-Eu-Puccinia. 107 
Kellerman — Alternate Form of ^Ecidium hibisciatum . 109 
KellermaN — Ohio Fungi. Fascicle VII. 110 
Kellerman — Index to North American Mycology. 116 
Kellerman — Notes from Mycological Fiteratnre V. 155 
Editor’s Notes ... 160 
ON A RUST OF THE CULTIVATED SNAPDRAGON. 
BY W. C. BLASDALE. 
During the summer of 1895 the writer found near San Lean¬ 
dro, California, the uredo stage of a rust growing on cultivated 
forms of Antirrhinum majus. Somewhat later the same rust ap¬ 
peared on some plants of the same host growing in my own gar¬ 
den at Berkeley. Both uredo and teleuto stages were produced 
and the fungus ultimately destroyed the entire group of plants. 
Specimens were submitted to Mr. E. W. D. Holway and to Dr. 
Dietel, and the species was published (Hedwigia, 36:298, 1899), 
by them under the name of Puccinia Antirrhini. Since that year 
the fungus has appeared every season in which an attempt was 
made to raise this annual, and in every case destroyed the plants 
shortly after they had reached the flowering stage. Further ob¬ 
servations have shown that the disease is a common one in the 
region about San Francisco Bay, though I have no knowledge 
of its occurring elsewhere in the State. Since there is no record 
of a similar disease in other parts of the world, the question at 
once arises as to where it originated, since the period of time dur¬ 
ing which the snapdragon has been cultivated in California is 
comparatively limited. Thus far only four species of rusts which 
inhabit scrophulariaceous genera have been found in the State. 
These are Puccinia wulfeniae D. & H. on Wulfenia cordata, P. 
