Parasitic Bacteria and Fungi Occurring in Texas. 
11 
only seventy-eight species of Ravenel’s collection were included. 
The remainder of Ravenel’s specimens were never reported as far as 
the writers have been able to learn, but duplicates of a considerable 
number are in the Ellis collection. Twenty-five new species were 
described by Cooke (9) from collections made by Ravenel at Hous- 
ton and Galveston. 
In 1890, Jennings published a list of ninety-five species of para- 
sitic fungi collected mainly in the vicinity of College Station (24). 
The works of the two botanists mentioned constituted the only ex- 
tensive lists of Texas Fungi up to the time when the writers began 
their work in the spring of 1909, although various other workers 
had added to the knowledge of Texas Fungi. Notable among these 
should be mentioned Long (26, 27, 28), whose work added largely to 
the knowledge of the rusts, his collections being made for the most 
part in the vicinity of Austin. 
Scattered references to Texas fungi will be found in the mycologi- 
cal writings of various authors and the works by Arthur (2), Clin- 
ton (6), and Murrill (29, 30), in their respective fields, give some 
references to Texas fungi not recorded elsewhere. Various workers 
in the U. S. Department of Agriculture have made collections in 
Texas, and a limited number of Texas parasitic species, destruc- 
tive to economic plants, are mentioned in Orton’s annual summaries 
of 44 Plant Diseases in the United States” (31-36). 
In the spring of 1909, the writers, in co-operation with the Bureau 
of Plant Industry of the U. S. Department of Agriculture, began a 
Plant Disease Survey of the area designated as the San Antonio- 
Austin area. This area included the territory within a radius of 
one hundred miles of San Antonio, and collections were made at 
many points. 
Parasitic species occuring on both wild and economic plants were 
collected but the principal attention was given to the cultivated 
crops. As a result of this work forty-one new species have been 
described and a total of two hundred and ninety-three species on 
one hundred and ninety-three different hosts have been recorded. 
They are distributed as follows: 
On Tree Fruits 30 species 
“ Small Fruits 7 44 
44 Truck Crops 33 44 
44 Cereals and Field Crops 13 44 
4 4 Forage Crops and Grasses 25 44 
4 4 Trees and Shrubs 90 44 
4 4 Greenhouse and Garden Plants 27 44 
44 Wild Plants 68 44 
