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. Avide. 



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. & Standi. 



Carduus vinaceus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 196. 1913. 

 Type locality: In the Sacramento Mountains near Fresnal, New Mexico. Type 

 collected by Wooton, July 12, 1899. 

 Range : Known only from type locality, in the Transition Zone. 



2. Cirsium acaulescens (A. Gray) Daniels, Univ. Mo. Stud. Sci. 2"^: 254. 1911. 

 Cnicus drummondii acaulescens A. Gray, Proc. Amer. Acad. 10: 40. 1874. 

 Carduus acaulescens Rydb. Bull. Torrey Club 28: 508. 1901. 



Type locality: Rocky Mountains. 



Range : Wyoming to northern New Mexico. 



New Mexico: Taos Mountains; Costilla Valley. Meadows. 



■ 3. Cirsium pallidiun Woot. & Standi. 



Carduus pallidus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 195. 1913. 



Type locality: In the Pecos River National Forest near Winsors Ranch, New Mex- 

 ico. Type collected by Standley (no. 4357). 



Range: New Mexico and southern Colorado. 



New Mexico: Winsors Ranch; Tunitcha Mountains; Chama; mountains west of 

 Las Vegas; Baldy; "White and Sacramento mountains. Along streams and in wet 

 meadows, in the Transition and Canadian zones. 



4. Cirsium. inornatura Woot. & Standi. 



Carduus inornatus Woot. & Standi. Contr. U. S. Nat. Herb. 16: 195. 1913. 

 Type locality: Sacramento Mountains near Cloudcroft, New Mexico. Type col- 

 lected by Wooton, August 24, 1901. 

 Range: Known only from type locality. 



5. Cirsium gilense Woot. & Standi. 



Carduus gilensis Woot. & Standi. Contr. U. S. Nat. Herb. 16: 195. 1913. 

 Type locality: In the MogoUon Mountains on the West Fork of the Rio Gila, 

 Socorro County, New Mexico. Type collected by Metcalfe (no. 377). 

 Range: Kno^vn only from type locality. 



6. Cirsium neomexicanum A. Gray, PI. Wright. 2: 101. 1853. 



Cnicus neomexicanus A. Gray, Proc. Amer. Acad. 10: 45. 1874. 

 Carduus neomexicanus Greene, Proc. Acad. Phila. 1892: 362. 1893. 



