WOOTON AND STANDLEY FLORA OF NEW MEXICO. 7l7 



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. pentachaela. 



Plants glabrous; bracts not ciliate; rays equaling the 



involucre 6. T. 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. 

 Type locality: "Between Cold Spring and Upper Spring, west of Cimarron Creek," 

 probably in Oklalioma. 



Range : Kansas and Colorado to New Mexico and Texas. 



New Mexico: Plaza Larga (Bigelow). Plains, in the Upper Sonoran Zone. 



2. Thymophylla neoinexicana (A. Gray) Woot. & Standi. Contr. U. S. Nat. Herb. 



16: 191. 1913. 

 Adenophjllum ivrightii A. Gray, PI. Wright. 2: 92. 1853, not Hymenatherum ivrightii 



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). 

 Range: Known only from type locality. 



3. ThymophyUa polychaeta (A. Gray) Small, Fl. Southeast. U. S. 1295. 1903. 

 Hymenatherum polychaetum A. Gray, PI. Wright. 1: 116. 1852. 



Type 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. ThjrmophyUa thixrberi (A. Gray) Woot. & Standi. Contr. U. S. Nat. Herb. 16: 



191. 1913. 

 Hymenatherum thurberi A. Gray, Proc. Amer. Acad. 19: 41. 1883. 

 Type locality: "Stony hills near El Paso," Texas or Chihuahua. 

 Range: Western Texas and southern New Mexico to northern Mexico. 

 New Mexico: Laguna; TresHermanas; Tortugas Mountain. Dry hills and mesas, 

 in the Lower and Upper Sonoran zones. 



5. ThymophyUa pentachaeta (DC.) Small, Fl. Southeast. U. S. 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. & Standi. Contr. U. S. Nat. Herb. 16: 



191. 1913. 

 Hymenatherum berlandieri DC. err. det. Benth. Pi. Hartw. 18. 1839. 

 Hymenatherum hartwegi A. Gray, PI. Wright. 1: 117. 1852. 

 Type locality: Mexico. 



Range: Western Texas to southern Arizona, south into Mexico. 

 New Mexico: Laguna {Leramx)n). Lower and Upper Sonoran zones. 



