722 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
8. Hymenopappus arenosus Heller, Bull. Torrey Club 25: 200. 1898. 
Type LocaLity: Near Espanola, Santa Fe County, New Mexico. Type collected 
by Heller (no. 3542). 
Rance: Colorado and Utah to New Mexico. 
New Mexico: Carrizo Mountains; Tunitcha Mountains; Farmington; Dulce; Santa 
Fe; Espanola; Ojo Caliente; Chama River; Albuquerque; White Sands. Dry plains 
and low hills, in the Lower and Upper Sonoran zones. 
9. Hymenopappus filifolius Hook. Fl. Bor. Amer. 1: 317. 1833. 
Tyre Locauity: “On the undulating arid grounds of the Columbia, near Walla 
Walla, and on the banks of the Spokane and Flat-head Rivers.’’ 
RanGe: British America to Nebraska, New Mexico, and Oregon. 
New Mexico: Glorieta; Santa Fe; Round Mountain. Plains and dry hills, in the 
Upper Sonoran Zone. 
100. OTHAKE Raf. 
Scabrous, more or less viscid herbs with lanceolate to linear, entire, petiolate, alter- 
nate leaves and loosely cymose pedunculate heads of rose purple flowers; involucre 
turbinate, of linear-lanceolate bracts with scarious tips, these in 2 series; rays pal- 
mately 3-cleft, fertile; stamens exserted; achenes linear to clavate, quadrangular, 
minutely pubescent; pappus of 6 to 12 hyaline scales. 
KEY TO THE SPECIES, 
Heads homogamous; achenes broadened upward..............-.- 1. O. texanum. 
Heads heterogamous; achenes not broadened upward............. 2. O. sphacelatum. 
1. Othake texanum (DC.) Bush, Trans. Acad. St. Louis 14: 176. 1904. 
Palafoxia texana DC. Prodr. 5: 125. 1836. 
Polypteris texana A. Gray, Proc. Amer. Acad. 19: 30. 1883. 
TYPE LOCALITY: Texas. 
Rance: Western Texas and eastern New Mexico. 
We have seen no New Mexican specimens of this, but it is said by Doctor Gray 
to have been collected at Los Moros by Bigelow in 1853. 
2. Othake sphacelatum (Nutt.) Rydb. Bull. Torrey Club 37: 331. 1910. 
Stevia sphacelata Nutt.; Torr. Ann. Lye. N.Y, 2: 214. 1828. 
Polypteris hookeriana A. Gray, Proc. Amer. Acad. 19: 30. 1883. 
Type Locatity: Not stated. 
RanGeE: Nebraska and Colorado to New Mexico and Texas. 
New Mexico: Albuquerque; Jemez; Mesilla Valley; Tortugas Mountain; south of 
Melrose; Carlsbad; Roswell; Nara Visa. Plains and mesas, in the Lower and Upper 
Sonoran zones. 
101. HYMENOTHRIX A. Gray. 
Slender, nearly glabrous annuals, having once to thrice parted leaves with linear 
or filiform divisions, and numerous small corymbose heads with yellowish, whitish, 
or purplish flowers; involucre turbinate-campanulate, about 30-flowered, the bracts 
7 to 10, obovate to oblong, with scarious tips; ray flowers 6 to 10; achenes 4 or 5- 
angled, obpyramidal; pappus about as long as the achene, of 12 to 20 lanceolate hya- 
line scales. 
KEY TO THE SPECIES. 
Bracts of the involucre glabrous, purplish; disk corollas white or , 
purplish.............. we ee eee eee eee eee eee eee e eens 1. A, wrightii. 
Bracts pubescent, yellowish; disk corollas yellow..................-. 2. H. wislizeni. 
