ActineUa. COMPOSITE. 345 



Var. linearis, Nutt. 1. c. Leaves all narrowly linear and entire, more rigid. — Texas 

 to New Mexico, and the borders of Colorado : broader-leaved and dwarfer forms very like 

 glabrate A. acaulis. (Adj. Mex.) 



A. acaulis, Nutt. Densely cespitose, the branches of the caudex short, thick, and crowded, 

 canescently villous or sericeous, sometimes more naked : leaves thickish, all entire, from 

 spatulate to nearly linear, commonly short (half-inch to 2 inches long), densely crowded on 



the caudex : scape half-inch to 6 inches high : rays 3 to 5 inches long (rarely wanting). 



Gen. ii. 173 ; Torr. & Gray, 1. c. ; Eaton in Bot. King Exp. 174. A. lanata, Nutt. Trans. 

 Am. Phil. Soc. 1. c. ; Torr. & Gray, 1. c, a loosely villous form. Galardia acaulis, Pursh, 

 Fl. ii. 743. Cephalophora (ActineUa) acaulis, DC. 1. c. — Pocky Mountains and the bordering 

 plains and hills, Dakota to Montana, and south to New Mexico, AV. Nevada, and Arizona. 

 Passes into 



Var. glabra, Gray, Man. ed. 5, 263. Leaves green, spatulate-linear, from sparingly 

 villous or glabrate to nearly glabrous, even to the base and axils. — A. glabra & A. Torrey- 

 ana, Nutt. 1. c. ; Torr. & Gray, Fl. ii. 382. — Rocky hills and bluffs, Wyoming Terr, to New 

 Mexico and Utah. Also on an ancient mound at Joliet, Illinois, Scammon, W. Boott, prob- 

 ably adventive. 



A. depressa, Torr. & Gray. Pulvinate-cespitose : leaves densely crowded on the very 

 thick dense branches of the caudex, spatulate-linear, half-inch long, either sericeous-canescent 

 or glabrate : head strictly sessile, immersed among the long-villous bases of the leaves. — 

 PI. Fendl. 100, with var. pygmcea, a diminutive silky-canescent form. — Mountains of W. 

 Colorado or E. Utah, Fremont, Ward, and the small variety, Raton Mountains, Gordon. 

 Perhaps a state of A. acaulis. 



•*— 4— Leaves all quite entire, crowded on the caudex, also scattered along the simple or sparingly 

 branched stems : peduncles slender: heads, &c, of the preceding subdivision. 



A. argentea, Gray. Commonly rather stout, a span to a foot high, silvery-canescent with 

 appressed silky pubescence : lower leaves spatulate and oblanceolate, uppermost linear : heads 

 4 or 5 lines high and rays 5 or 6 lines long, but sometimes of less than half this size : paleas 

 of the pappus 5, from broadly ovate or obovate to oblong, with manifest costa produced into 

 an awn which usually about equals the disk-corolla. — PI. Fendl. 100; Rothrock in Wheeler 

 Rep. vi. 173. — Hills of New Mexico; first coll. by Fendler. 



A. leptoclada, Gray. A span or two high, more slender, sparsely and more loosely silky- 

 villous, glabrate, the narrower (sometimes all narrow-linear) leaves and lower part of the 

 stems not rarely glabrous : heads usually smaller than of the foregoing. — Pacif. R. Rep. 

 iv. 107. — New Mexico and S. W. Colorado to Arizona? Bigelow, Newberry, Brandegee, &c. 



•f— •)— •(— Leaves mostly parted or dissected into narrow linear lobes, crowded on the thick com- 

 paratively simple caudex and scattered on the short flowering stems: heads large: bracts of the 

 involucre herbaceous but very woolly, loose: receptacle hemispherical: paleiE of the pappus 

 5 or 6, elongated-lanceolate, attenuate into a subulate but hardly awned point, somewhat shorter 

 than the disk-corolla. 

 A. Brandegei, T. C. Porter. Leaves glabrate, with 2 or 3 lobes toward the upper part, 

 or some entire, narrowly linear, only 2 or 3 on the somewhat scapiform simple flowering 

 stem (of a span or more in height) : head therefore conspicuously pedunculate, half-inch 

 high and wide : involucral bracts lanceolate : rays 12 to 16, 3 or 4 lines long. — Gray, Proc. 

 Am. Acad. xiii. 373. A. grandiflora, "var. glabrata, Porter & Coulter, Fl. Colorad. 76. — 

 Alpine region of the Sangre de Christo and adjacent mountains of S. Colorado, Parry 

 (1867), Brandegee, Gray & Hooker. 

 A. grandiflora, Torr. & Gray. A span or two high, very stout, floccose-woolly, tardily 

 somewhat glabrate in age: stem simple or branching below, leafy: leaves with petiole 

 scarious-dilated at base, lower ones 2-3-ternately or quinately parted, upper with 3 to 5 

 simple lobes : involucre about an inch broad, very woolly ; its bracts linear : rays 30 or more, 

 over half -inch long: plants generally growing singly and' the caudex on a perpendicular 

 root, as if biennial. — Bost. Jour. Nat. Hist. Soc. v. 110 ; Gray, Am. Jour. Sci. xxxiii. 240. — 

 Alpine region of the Rocky Mountains from Montana to Colorado ; first coll. by Fremont. 

 A. CHRYSAKTHEMofDES and A. iNsfG«fis, Gray, Proc. Am. Acad. xix. 32, of Mexico (large 

 and tall species, with much divided leaves, and at most biennial roots), rank next to A. 

 grandiflora. 



