CARDUACEAE. 
379 
Branches of the caudex not copiously villous. 
Bases of the leaves not broader than the oblanceolate or almost linear 
blades; branches of the caudex short and stout. 
Leaves oblanceolate; bracts slightly shorter than the disk; rays not 
strongly veined. io. T. glabriuscula. 
Leaves linear or oblanceolate-linear; bracts one-fourth shorter than 
the disk; rays strongly nerved. n. T. angusti folia. 
Bases of the leaves 2-4 times as wide as the linear leaf-blades ; branches 
of the caudex elongated ; bases of the leaves and involucres sparingly 
silky villous. 12. T. stenophylla. 
Stems 2-3 dm. high with 2-4 leaves. 
Outer bracts oval or ovate, purple. 13. T. leptoclada. 
Outer bracts linear-oblong or lanceolate, green. 14. T. intermedia. 
1. Tetraneuris acaulis (Pursh) Greene. ( Actinella acaulis Nutt.) On 
hills and dry plains from Neb., Mont, and Ida. to N. M.—Alt. 4000-6000 ft.— 
Rocky Ford, Otero Co.; Bartlett; mesas near Pueblo; Trinidad; Colorado 
City. 
V 
2. Tetraneuris simplex A. Nelson. On dry hills from S. D. and Ida. to 
Neb. and Colo.—Crow Creek; Monument. 
3. Tetraneuris trinervata Greene. On dry hills from Colo, to Tex.—On 
the Platte. 
4. Tetraneuris lanata (Nutt.) Greene. ( Actinella lanata Nutt.) On the 
mountains of Wyo. and Colo.—Alt. 6000-13,000 ft.—Mountain near Veta 
Pass; Seven Lakes; Como; West Indian Creek; west slope of Bald Moun¬ 
tain; Pike’s Peak; Central City; Mt. Garfield; mesas near Colorado Springs; 
Berthoud Pass; Sangre de Cristo Pass; north of La Porte; Pine Grove; 
James’ Peak. 
5. Tetraneuris Torreyana (Nutt.) Greene. (A. Torreyana Nutt.) On 
rocky hills of Wyo., Colo, and Utah.—Alt. 4000-6500 ft.—Near northern 
State line. 
6. Tetraneuris brevifolia Greene. Exposed mountains near Pike’s Peak, 
Colo. 
7. Tetraneuris arizonica Greene. On dry hills from Colo, to Ariz.—Trini¬ 
dad ; Colorado Springs. 
8. Tetraneuris pilosa Greene. On dry hills and mountains from Colo, to 
Ariz.—Alt. about 7000 ft.—Los Pinos (Bayfield) ; Manitou. 
9. Tetraneuris Crandallii Rydb. On dry hills of Colo. — Alt. 4000-5000 ft. — 
Grand Junction; McCoy’s, Eagle Co.; Cimarron. 
10. Tetraneuris glabriuscula Rydb. (T. glabra Greene; not Actinella glabra 
Nutt.) On dry hills from Colo, and Nev. to N. M.—Alt. about 6000 ft.— 
Ft. Collins; Canon City; Red Rock Canon, near Pike’s Peak. 
11. Tetraneuris angustifolia Rydb. On dry rocky hills from Colo, to Tex. 
and N. M.—Alt. up to 7000 ft.—Table Rock; Mancos; Ft. Lyon; Arkansas 
River. 
12. Tetraneuris stenophylla Rydb. On dry plains from Kans. and Colo, to 
Tex.; also Mex.—Banks of Cimarron. 
13. Tetraneuris leptoclada (A. Gray) Greene. ( Actinella leptoclada A. 
Gray; T. Mancosensis A. Nels.) On dry hills of Colo, and N. M.—Alt. up 
to 9000 ft.—Mancos; Leroux Creek, Delta Co. 
14. Tetraneuris intermedia Greene. On dry hills of southern Colo.—Alt. 
6500-7000 ft.—Cimarron; Pagosa Springs. 
