WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 717 
Perennials; divisions of the leaves filiform, rigid. 
Scales of the pappus all alike, awned..........-...--------- 4, T. thurberi. 
Scales of pappus in 2 series, the inner awned, the outer obtuse 
and pointless. 
Plants puberulent; bracts ciliate; rays shorter than 
the involucre....-..--.----------++------+-+---+-- 5. T. pentachaeta. 
Plants glabrous; bracts not ciliate; rays equaling the 
involucre...........2----- 2 ee ee eee eee eee eee 6. 7. hartwegi. 
1. Thymophylla aurea (A. Gray) Greene; Britt. & Brown, Illustr. Fl. 3: 453. 1898. 
Lowellia aurea A. Gray, Mem. Amer. Acad. n. ser, 4: 91. 1849. 
Hymenatherum aureum A. Gray, Proc. Amer. Acad. 19: 42. 1883. 
Dysodia aurea A. Nels. in Coulter, New Man. Rocky Mount. 563. 1909. 
Typr Locauity: ‘“‘ Between Cold Spring and Upper Spring, west of Cimarron Creek,” 
probably in Oklahoma. 
Range: Kansas and Colorado to New Mexico and Texas, 
New Mexico: Plaza Larga (Bigelow). Plains, in the Upper Sonoran Zone. 
2. Thymophylla neomexicana (A. Gray) Woot. & Standl. Contr. U. 8. Nat. Herb. 
16: 191. 1913. 
Adenophyllum wrightii A. Gray, Pl. Wright. 2: 92. 1853, not Hymenatherum wrightit 
A. Gray, 1849. 
Hymenatherum neomexicanum A. Gray, Proc. Amer, Acad. 19: 40. 1883. 
TypE LOCALITY: Hillsides near the Copper Mines, New Mexico. Type collected by 
Wright (no. 1240). 
Rance: Known only from type locality. 
3. Thymophylla polychaeta (A. Gray) Small, Fl. Southeast. U. 8. 1295. 1903. 
Hymenatherum polychaectum A. Gray, Pl. Wright. 1: 116. 1852. 
Typr LocaLity: ‘Prairies at the Pass of the Limpio,’’ Texas. 
RANGE: Western Texas to southern New Mexico and southward. 
New Mexico: Plains east of Fort Cummings; El Paso to Monument 53. Lower 
Sonoran Zone. 
4. Thymophylla thurberi (A. Gray) Woot. & Standl. Contr. U.S. Nat. Herb. 16: 
191. 1913. 
Hymenatherum thurberi A. Gray, Proc. Amer. Acad. 19: 41. 1883. 
Type Locauity: ‘Stony hills near El Paso,” Texas or Chihuahua. 
Rance: Western Texas and southern New Mexico to northern Mexico. 
New Mexico: Laguna; Tres Hermanas; Tortugas Mountain. Dry hillsand mesas, 
in the Lower and Upper Sonoran zones. 
5. Thymophylla pentachaeta (DC.) Small, Fl. Southeast. U. 8. 1295, 1903. 
Hymenatherum pentachaetum DC. Prodr, 5: 642. 1836. 
Type LocaLity: Near Monterey, Mexico. 
RANGE: Southern Utah to Arizona and western Texas and southward. 
New Mexico: Van Pattens; Tortugas Mountain; Hondo Canyon, 50 miles west of 
Roswell. Dry hills, in the Lower and Upper Sonoran zones. 
6. Thymophylla hartwegi (A. Gray) Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 
191. 1913. 
Hymenatherum berlandiert DC. err. det. Benth. Pl. Hartw. 18. 1839. 
Hymenatherum hartwegi A. Gray, Pl. Wright. 1: 117. 1852. 
Type LocALity: Mexico. 
Rance: Western Texas to southern Arizona, south into Mexico. 
New Mexico: Laguna (Lemmon). Lower and Upper Sonoran zones. 
