SOME ALASKA FUNGI 
J. P. ANDERSON 
This list is based entirely on collections and observations by the 
writer. Only parasitic fungi and those appearing shortly after 
the death of the host plant are included, as these are the only ones 
to which sufficient attention has been paid. Quite a number of 
rusts (Uredinales) have been collected but are not included as 
it is the intention to list them in a separate paper. With few 
exceptions the fungi in this list are based on material collected at 
Sitka during the years 1914 to 1916 inclusive. The determinations 
were largely made by the U. S. Department of Agriculture at 
Washington. The Misses Vera K. Charles and A. E. Jenkins 
determined most of the species.^ 
So far as is known to the writer the only papers dealing with 
the fungi of Alaska, outside of some previous notes by himself/ 
are the report of ^ the Harriman Alaska Expedition ^ and the 
references therein given by Dr. Trelease to previous mention of 
fungi from Alaska. 
PLASMODIOPHORALES 
Plasmodia phora brassicae Wor. Club-Root On roots of Brassica 
oleracea and vars., Brassica campestris, Raphanus sativus. This disease 
is quite common and sometimes destructive on the different members of 
the cabbage group. It is less common on turnips, rutabagas, and radishes. 
Bacteriaceae 
Bacillus phytophthorus Appel. Black Leg. On Solanum tuberosum. 
Introduced with seed potatoes. 
Pseudomonas campestris (Pam.) E. F. Smith, Black Rot. On Brassica 
oleracea and vars. Black rot sometimes damages cabbage and brussels 
sprouts. 
Pseudomonas radicicola (Bey.) Moore. Tubercules have been noted on 
the roots of various legumes, including Trifolium, Medicago, Cytisus. 
Pseudomonas tumefaciens (S. & T.) Stev. Crown Gall. In 1917 a few 
plants of Marguerite or Paris Daisy {Chrysanthemum frutescens) were 
received at Juneau from Seattle, Wash. Some crown gall was noted on 
1 Specimens have been deposited in my own herbarium at Iowa State College, and 
in the United States Department of Agriculture. J. P. A. 
2 Anderson, J. P., Fungus diseases: Kept. Alaska Agri, Ejxpt. Stations, 1914 and 
1915. Notes on the Flora of Sitka: Iowa Acad. Sci., XXIII, 1916. 
S Saccardo, J. P., Peck, C. H., and Trelease, W., Fungi of Alaska: Harriman 
Alaska Series of the Smithsonian Institution, Vol. 5, 1910. Cryptogamic Botany. 
