WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 751 
Plants permanently tomentose. 
Involucres less than 3 cm. wide. 
Leaves very spiny; bracts scarcely if 
at all tomentose on the margins, 
the tips 5 mm. long or more; 
leaves soon glabrate on the up- 
per surface............-.------ 14. C. perennans. 
Leaves sparingly spiny; bracts strongly 
tomentose on the margins, the 
tips 3 mm. long or less; leaves 
usually permanently tomen- 
tose on both surfaces.......-.-. 15. C. undulatum. 
Involucres 4 to 6 cm. wide. 
Spines of the involucral bracts usually 
about 5 mm. long; leaves very 
broad ; corollas usually carmine .16. C. megacephalum. 
Spines of the bracts 1 cm. long; leaves 
narrow; corollas purplish rose, 
often white..........-.-.-..--- 17. C. ochrocentrum. 
1. Cirsium vinaceum Woot. & Standl. 
Carduus vinaceus Woot. & Stand]. Contr. U. 8. Nat. Herb. 16: 196. 1913. 
Type Locauity: In the Sacramento Mountains near Fresnal, New Mexico. Type 
collected by Wooton, July 12, 1899. 
Rance: Known only from type locality, in the Transition Zone. 
2. Cirsium acaulescens (A. Gray) Daniels, Univ. Mo. Stud, Sci. 27: 254, 1911. 
Cnicus drummondii acaulescens A. Gray, Proc. Amer. Acad. 10: 40. 1874. 
Carduus acaulescens Rydb. Bull. Torrey Club 28: 508. 1901. 
Tyre LocaLiry: Rocky Mountains. 
Rance: Wyoming to northern New Mexico. 
New Mexico: Taos Mountains; Costilla Valley. Meadows. 
38. Cirsium pallidum Woot. & Stand1. 
Carduus pallidus Woot. & Stand]. Contr. U. 8. Nat. Herb. 16: 195. 1913. 
Tyre Locality: In the Pecos River National Forest near Winsors Ranch, New Mex- 
ico. Type collected by Standley (no, 4357). 
Rance: New Mexico and southern Colorado. 
New Mexico: Winsors Ranch; Tunitcha Mountains; Chama; mountains west of 
Las Vegas; Baldy; White and Sacramento mountains. Aiong streams and in wet 
meadows, in the Transition and Canadian zones. 
4. Cirsium inornatum Woot. & Stand1. 
Carduus inornatus Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 195. 1913. 
Type LocaALiry: Sacramento Mountains near Cloudcroft, New Mexico. Type col- 
lected by Wooton, August 24, 1901. , 
Rance: Known only from type locality. 
5. Cirsium gilense Woot. & Standl. 
Carduus gilensis Woot. & Standl. Contr. U. 8S. Nat. Herb. 16: 195. 1913. 
Type tocauity: In the Mogollon Mountains on the West Fork of the Rio Gila, 
Socorro County, New Mexico. Type collected by Metcalfe (no. 377). 
Rance: Known only from type locality. 
6. Cirsium neomexicanum A. Gray, Pl. Wright. 2: 101. 1853. 
Cnicus neomexicanus A. Gray, Proc. Amer. Acad. 10: 45. 1874. 
Carduus neomexicanus Greene, Proc. Acad. Phila. 1892: 362. 1893. 
