504 CocKERELL: NORTH AMERICAN SPECIES OF HYMENOXYS 
not appear to be racial. Of the following, the first is tall, but the 
others are small bushy or low plants, intermediate between the 
present race and subsp. m/tiflora : *‘ Manzanilla Cimarron, flower 
yellow, from a bunch forming a beautiful obtuse cone (usual style) 
2 feet high and in diameter, Bolson de Mapimi (dry valley),” 
April 15, 1847, Dr. J. Gregg ; ‘‘ Manzanilla del Campo (a species) 
from wet place in plain S. E. from Presido de Yuajuquilla,” April 
19, 1847, Dr. /. Gregg; “ Rio Grande Valley near Juarez, State 
of Coahuila,’ 3700 ft., May 5, 1901, C. G. Pringle ; Sta. Eulalia 
plains, Chihuahua, 1885, Wi/kinson ; cultivated places on the 
plains, 6000 ft. alt., State of Chihuahua, April 29, 1891, C. V. 
Hartman ; Bachimpa, south of Chihuahua, sandy soil, April 26, 
1847, Dr. A. Wislizenus ; ‘States of Coahuila and Nuevo Leon,” 
1880, Dr. E. Palmer 741. 
The last plant, Palmer's 747, is ridiculously unlike the Met- 
calfe plant, being a small densely leafy thing 9 to 12 cm. high. 
The others, however, are variously intermediate, and without 
a larger amount of material, or field study, it does not seem 
possible to define any more subspecies. None of the plants 
are just exactly the Texan subsp. mz/tiflora, though some ap- 
proach it. 
Texas. — El Paso, April 17, 1884, I. E. Jones ; “Texas,” 
April 24, 1883, C. G. Pringle; El Paso, April, 1881, G. &. 
Vasey; “from Western Texas to El Paso,’ October, 1849, 
Charles Wright ; El Paso, 1851-52, C. Wright 1261; thus all 
from the extreme western end of the State, not far from New 
Mexico. 
New Mexico.—Emory Survey, xo. 634; College Farm, 
Mesilla Valley, May, 1894, & O. Wooton; Rincon, prox. 4,000 
ft.,. June 13, 1892, &. O. Wooton; Las Cruces, Mesilla Valley, 
May 17, 1893, Z. O. Wooton ; River bottom [of the Rio Grande], 
Mesilla Valley, April 7, 1900, £. O. Wooton. These plants, nearly 
all from the Mesilla Valley, are essentially the same as the El 
Paso plant. I was familiar with this form in life at Mesilla. It is 
not usually so large and bushy as the Mangas Springs plant, but 
: is certainly nearer to it than to the small typical subsp. multt- 
ora. 
Arizona. — Near Tucson, May, 1881, /. G. Lemmon and wife, 
