430 
J. C. ARTHUR 
The collection selected for the type of the species was collected on 
an undetermined species of Crotalaria, by W. A. Kellerman, at Laguna, 
altitude 4000 feet, on Lake Amatitlan, Dept. Amatitlan, Jan. 17, 1906, 
II, iii, 53 gy. Another collection by Kellerman, showing only uredinia, 
was collected on C. maypurensis H.B.K., a cultivated plant called by 
the natives "Chipilin," at Guanda Viejo near Guatemala City, Feb. 3, 
1905. 
This is the first species of Uropyxis with one-celled teliospores yet 
recorded. 
48. Uropyxis Daleae (Diet. & Holw.) Magn. (on Fabaceae). 
Parosela diffusa (Moric.) Rose, Palin, Dept. Amatitlan, Dec. 24, 
1916, ii. III, 638. 
Parosela domingensis (DC.) Millsp. (Dalea domingensis DC), 
Guatemala City, Jan. 8, 191 7, II, 681. 
Parosela nutans (Cav.) Rose, Guatemala City, Dec, 21, 1916, ii, 
III, 612. 
An abundant species in Mexico, where it has been collected by 
Professor Holway and others, but is now first reported elsewhere. 
49. Calliospora DiPHYSAE Arth. (on Fabaceae). 
Diphysa rohinioides Benth., Guatemala City, 5000 feet alt., Jan. J, 
1915, o, III, 8; Solola, Jan. 27, 1915, o, III, I2ia\ Panajachel, 
5100 feet alt.. Dept. Solola, Jan. 30, 1915, o, III, 157; Maza- 
tenango. Dept. Suchitepequez, Feb. 22, 1916, o, III, 52 1] San 
Felipe, Dept. Retalhuleu, Jan. 14, 1917, o. III, 716. 
Diphysa sp. (probably D. rohinioides Benth.), between San Lucas 
Toliman and Patalul, Feb. 4, 1915, o, III, igi] Patulul, 6000 
feet alt.. Dept. Escuintla, Feb. 4, 1915, III, 195. 
A short-cycle rust. In no. 191 most of the teliospores are much 
lighter-colored and thinner-walled than heretofore seen, giving at 
first sight the appearance of a distinct species. They are apparently 
not immature spores, but the early stage in the development of the 
sorus, in which these less resistant spores arise for a time to be replaced 
later by the usual dark-walled form, able to withstand greater variation 
in conditions. The lighter-colored form may be described as having 
inner walls cinnamon-brown, 1.5-3 M thick, with the outer gelatinous 
layer swelling only 1-2 ix thick in water. These collections also show 
that many teliospores are smaller than given in the original description, 
which should have the lower limit of breadth placed at 23 ix, and of 
length 35 M. 
