1905] ARTHUR—RUSTS FROM MEXICO 387 
thickened at apex, 5-7, pedicel colorless, thick, as long as the spore 
or shorter— On Lupinus mexicanus HBK., Nevada de Toluca, 
10,400 f* alt., Oct. 16, 1903. 
This collection also showed well-developed aecidia of Uromyces Lupini B. & C. 
upon the same leaves. The teleutospores germinate in the sorus upon maturity. 
5. Uromyces Lupint B. & C.—On Lupinus elegans HBK., 
Toluca, Sept. 19, 1898, no. 3177: Lupinus sp., Pachuca, Oct. 5, 
1899, no. 3575; Zapotlan, Oct. 9, 1903, no. 5140; Nevada de Toluca, 
Oct. 15, 1903, no. 5154; Amecameca, Oct. 21, 1903, no. 5209. 
6. Uromyces Cologaniae, n. sp.—Uredosori hypophyllous, scat- 
tered, round, small, o.25™™ or less across, soon naked, pulverulent, 
pale cinnamon-brown, ruptured epidermis barely noticeable; ure- 
dospores globoid, 16-23 by 20-274, wall pale cinnamon-brown, 
thin, 1.5-24, evenly and minutely echinulate, pores 3-4, equatorial: 
teleutosori hypophyllous, scattered, round, small, 0.25 ™™ across, 
soon naked, pulverulent, cinnamon-brown, ruptured epidermis 
barely noticeable; teleutospores oval or globoid, 16-20 by 18-26, 
rounded at both ends, wall cinnamon-brown, thin, 1.5-2#, closely 
and finely verrucose, apex a little thicker or with a very low, pale 
umbo, 2-4#; pedicel colorless, short, fragile; mostly deciduous.— 
On Cologania pulchella HBK., Patzcuaro, Oct. 20, 1898, no. 3192 
(type); Toluca, Sept. 20, 1898, no. 3179; Uruapam, Oct. 11, 1899, 
no. 3615: C. congesta Rose, Toluca, Sept. 20, 1898, no. 3179: C. 
ajinis Mart. & Gal., Jalapa, Oct. 3, 1898, no. 3193: Cologania sp., 
Oaxaca, Oct. 21, 1899, no. 3703. 
The determination of the several hosts was made by Dr. J. N. Rose of the 
U. S. National Museum, all with some slight question, as the material was far 
from complete. 
7. UROMYCES APPENDICULATUS (Pers.) Unger—On Phaseolus 
vulgaris L., City of Mexico, Oct. 15, 1898, no. 3049; Atequiza, State 
of Jalisco, Oct. 6, 1903, no. 5120: P. retusus Benth., near Tula, 
Sept. 20, 1898, no. 3161: P. anisotrichus Scheele, Rio Hondo, near 
City of Mexico, Sept. 22, 1898, no. 3155: P. disophyllus Benth., 
Chapala, Sept. 18, 1899, no. 3455: P. coccineus Jacq., City of Mexico, 
Oct. 9, 1898, no. 3037; Dos Rios, near City of Mexico, Sept. 22, 
1898, no. 3094; Uruapam, Oct. 12, 1899, no. 3625: P. obvallatus 
Scheele, Santa Fé, near City of Mexico, Oct. 18, 1903, nO. 5179; 
