STANDLEY—ALLIONIACEAF OF THE UNITED STATES. 333 
It is almost impossible to find two specimens which match each other in every 
important detail. 
Specimens exramined : 
TEXAS: El Paso, 1884, Jones 38776; Mexican Boundary Survey 1116; Upper 
Llano, 1885, Reverchon 1585: Barstow, 1902, Tracy 8346; along Devils 
River, 1900, Hggert; near Big Springs, 1900, Hggert: 1849, Wright 
597. , 
New Mexico: Organ Mountains, 1897, Wooton 145: Burro Mountains. 
1903, Metcalfe 724; near Cliff, 1908, Metcalfe 149: below Highrolls, 
1905, Wooton, a form with white flowers that seems to be not uncom- 
mon; near Lake Arthur, 1905, Wooton; Delaware Creek, 1893, 
Nealley 8. 
Mexico: Near Chihuahua, 1886, Pringle 1062: Saltillo, 1898. Palmer 81. 
ARIZONA: Santa Rita Forest Reserve, 1903, Griffiths 5908: Tucson, 1894, 
Toumey. 
CoLorapo: Canyon City, 1873, Greene 6, 
BouiviA: Bolivian Plateau, 1891, Bang 92s. 
The species is said to extend into South America as far as Argentina and 
Chile. 
sau. Wedelia incarnata anodonta Standley, subsp. nov. 
This subspecies is distinguished by the form of the fruit whose wings have 
smooth margins, not toothed as in all other species and varieties. Otherwise 
the plant is like the species, The plants with this kind of fruit are somewhat 
variable, and it is possible that two forms have been included in the specimens 
listed under this one subspecies. 
Type in the herbarium of the Field Museum of Natural History, no. 155550, 
collected on * plains of western New Mexico,” July, 1880, Rusby 355. 
Other specimens examined: 
NEW Mexico: Valverde, north of the Jornado del Muerto, 1846, Wislizenus 
b4; Albuquerque, 1846, Wislizenus 18. 
ARIZONA: Yucca, 1884, Jones; Beaver Creek, 1883, Rusby 286. 
The Arizona plants are rather larger and more robust than those from New 
Mexico. 
éb. Wedelia incarnata villosa Standley, subsp. noy. 
Perennial from a thick, woody root; stems branched mostly from the base, 
stout, villous throughout, straw-colored ; leaf blades elliptical, acutish or obtuse, 
34 mm. long and 18 mm. wide or less, rounded or oblique at the base, short- 
villous on both surfaces, especially on the veins; petioles mostly about one-half 
as long as the blades; peduncles 2 cm. long or less, slender, villous, few; bracts 
about 7 mm. long, ovate, not saccate, acutish; stamens about as long as the 
perianth or slightly exserted; fruit straw-colored, about 4.5 mm. long, with 38 
rather conspicuous ventral nerves, and with 2 or 8 irregular, low, and blunt 
teeth on each wing. 
The variety is distinguished by its villous stems and leaves and its large 
flowers, whose stamens are often exserted. Type in the herbarium of Field 
Museum of Natural History, collected on * mesas and foothills” in Arizona, 
May 22, 1881, Pringle; cotype in the herbarium of the Missouri Botanical 
Garden. 
Other specimens cxamined: 
ARIZONA: Fenced area, Santa Rita Forest Reserve, 1903, Griffiths 4405, 
4784; near Fort Huachuca, 1894, Wilcow 265, 147; Fort Grant, B. H. 
Dutcher 16, 17, 18; Santa Catalina Mountains, 1880, Lemmon; Tubae 
