830 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
sisting of two plants, both collected by BK. O. Wooton, one near Ojo Caliente, 
Zuni Reservation, New Mexico, July 20, 1906, and the other on the Zuni Reser- 
vation in 1904, no. 2820, 
Other specimens eramined: 
New Mexico: Zuni valley, 1902, Conard V4. 
ARIZONA: Near Hardy, 1903, Wooton; Winslow, 1802, Wooton; St. Joe, 1892, 
Wooton: 11 miles east of Winslow, 1892, Wooton; Adamana to Long 
H Raneh, 1908, Grifiths 5162; northeastern Arizona, 1896, Hough 16; 
18 miles below Black Falls, 1901, Ward; 5 miles northeast of Winslow, 
1901, Ward; Little Colorado River, 1896, Fernow: Winslow, 1903, 
Grifiths 5025; Holbrook, 1806, Myrtle Zuck, 
3. NYCTAGINIA Choisy. 
Nycataginia Choisy in DC. Prod. 13°: 429. 1849. 
Annual, erect, or ascending viscid herbs with dichotomous-branching stems; 
leaves opposite, the blades somewhat toothed or entire, petioled; flowers red- 
dish, numerous, surrounded by a polyphyllous, wany-bracted involucre; perianth 
funnelform with a narrow tube and a broad, 5-lobed limb: stamens unequal, 
exserted, their filaments slender, dilated, united below; style slender, the stigma 
capitate: fruit leathery, turbinate, 10-ribbed, the seed filling and adhering to 
the pericarp. 
KEY TO TILE SPECIES. 
Leaves triangular-ovate, their margins mostly entire; flowers 
orange-red __~~------------------- a - oe 1. N, capitata. 
Leaves triangular-hastate, thicker, their margins irregular or 
toothed: flowers crimson __ ~~---------------------------- 2. N. cockerellac, 
1. Nyctaginia capitata Choisy in DC. Prod, 187: 429, 1849. 
Bocrhaavia capitata Heimerl, Jahresb. Staats-Oberrealsch. Fiinfhaus Wien 
23: repr. 28. 1897, 
Type locality, In Texas apud S. Antonio de Biscar, 
Specimens eramined: 
Texas: Wright 1709, 600; San Antonio, 1881, Reverchon TS86; Mexican 
Boundary Survey 1122; Dallas, 1882, Reverchon 2336; Roma, 1889, 
Nealley 227; Knickerbocker Ranch, ‘Tom Green County, 1880, Tweedy ¢ 
Del Rio, 1891, L. H. Dewey; Barstow, 1902, Tracy 8343: Bexar County, 
Jermy 64; Fort Davis, 1881, Harvard; near Bracken, 1903, Groth 73; 
San Angelo, 1903, Reverchon; San Antonio. KE. Ht. Wilkinson 122, 
Laredo, 1879, Palmer 1114; near Laredo, 1899, Mackenzie 5; prairies 
near Big Springs, 1900, Mggert; near Stanton, 1900, Eggert. 
Mexico: Gallejo Springs between El Paso and Chihuahua, 1846, Wislizenus 
111; Saltillo, 1848, Gregg. 
2, Nyctaginia cockerellae A. Nelson, Proc, Biol. Soe. Wash, 16: 29, 1905. 
This plant differs from A. capitata in its thicker, subhastate leaves, rather 
smaller flowers, and less exserted stamens. The difference in number of sta- 
mens mentioned by Professor Nelson does not hold, neither does the difference 
in their insertion. I have not been able to see any essential difference in the 
shape of the lobes of the perianth in the two species. The flowers in this spe- 
cies are of a mueh deeper red color, The plant seems to be a very distinct one, 
readily distinguishable almost at a glance by its appearance, a species contined 
in its range to the upper valley of the Rio Pecos, 
