WOOTON AND STANDLEY FLOEA OF NEW MEXICO. 751 



Plants permanently tomentose. 



Involucres less than 3 cm. wide. 



Leaves very spiny; bracts scarcely if 

 at all tomentose 90 the margins, 

 the tips 5 mm. long-, or more; 

 leaves soon glabrate on the'Trp- 

 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. & 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 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. pallidum 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 oHected by Standley (no. 4357). 



Range: New Mexico and southern Colorado. 



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

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

 meadows, in the Transition and Canadian zones. 



4. Cirsium inornatum Woot. & Standi. 



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

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

 lected by Wooton. An -u-t 24, 1901. 

 Range: Known only from type locality. 



5. Cirsium gilense Woot. A Standi. 



Carduus gilensis Woot. & Stan. II. <ontr. U. S. Nat. Hcri>. 16: in:,. 1913. 



Tvi'i; LOI U m : In tin- Mogollon Mountains on the West Fork of the Rio Gila, 



Socorro County, Now Mexico. Typo collected by Metcalfe (no. 377). 

 Banob: Known only from type locality. 



6. Cirsium neomexic.uniin \. Gray, PI. Wright. 2: L01. LS 

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



Carduus ruonu.i ir.utiis (• I'mc. Acad. I'hila. 1892:3(1'.?. 1S93. 



