64 SYNOPSIS OF THE FLORA OF COLORADO. 



ardii, Parry, Proc. Amer. Acad,, v. 6, p. 541.) Shrubby, 6'-18' high ; younger 

 branches white- woolly ; leaves linear, 1-uerved, from webby becoming 

 smooth, l'-2' long, the uppermost about as long as or exceeding the 

 corymbose, crowded heads ; involucre cylindrical, 5-6 flowered ; scales 

 rather loose, all of them finely acuminate; tube of the pale yellow 

 corolla sparingly villous ; achenia linear, pubescent. Parry. Wet Moun- 

 tain Valley, Brandegee. 



BIGELOVIA PARRYI, Gr., Proc. Am. Acad., v. 8, p. 642. (Linosyris 

 Parryi, Gr. Proc. Acad. Phil. March 1863, p. 66.) Shrubby, 9'-18' high ; 

 branches virgate, white woolly, becoming smooth; leaves 2'-4' long, lin- 

 ear, almost glabrous, sub viscous, 3-nerved, acute, plane, larger ones 2" 

 wide and tapering to the base ; floral leaves similar, far surpassing the 

 heads which are crowded in a narrow thyrsus ; heads about 9" long, ib- 

 liose-bracteate ; involucre 10-15 flowered, cylindraceous, series few, scales 

 sublax, imbricate, whitish, lanceolate, all attenuate acuminate ; tube of 

 the corolla hirsutulous ; achenia linear, hoary-pubescent. Hall & Har- 

 bour, 293 ; Parry, 413; Canby. Mount Elbert near Twin Lakes, at 10,000 

 feet altitude, Coulter. 



BIGELOVIA BIGELOVII, Gr., Proc. Am. Ac., v. 8, p. 642. (Linosyris 

 Bigelovii, Gr., in Bot. Whippl. 42, 1. 12.) Subcinereous, woody, very much 

 branched, 2 high and more; branches rigid, slender, broom-like, younger 

 ones whitened ; leaves revolute on the margins, filiform ; involucre 5-flow- 

 ered, narrow, scales chartaceous, of the same color, moderately carinate, 

 appressed, outer ones oblong-lanceolate, woolly-ciliate, rather acute, inner 

 ones narrower, often acuminate ; limb of the corolla narrow, shortly 

 5-lobed; bristles of the pappus scarcely rigid, longer than the corolla; ap- 

 pendages of the style elongate-subulate or filiform, hispidulous, mostly 

 longer than the linear stiginatic portion ; achenia very glabrous, linear, 

 4-6 angled, with a broad epigynous disk. Wet Mountain Valley, Bran- 

 degee. The specimens vary from the typical form in their smaller heads 

 and more spreading scales of the involucre. 



BIGELOVIA DEPRESSA, Gr., Proc. Am. Acad., v. 8, p. 643. (Chrysotham- 

 nus depressus, Nutt ; PL Gamb., p. 171. Linosyris depressa, Torr., Sit- 

 greaves 1 Rep.,\). 161.) Glabrous, woody; branches a span high from a 

 decumbent base; leaves lanceolate or oblauceolate, inucronate-aeute, 

 short, 6" long, rigid ; scales of the involucre elongated-lanceolate, gradu- 

 ally acuminate, smooth, chartaceous, of the same color ; lobes of the 

 corolla short; bristles of the pappus rigid, longer than the corolla; 

 achenia very smooth, 4-6-augled, with a broad epigynous disk. Col- 

 lected by Parry in the Sangre de Gristo Eauge. 



BIGELOVIA GRAVEOLENS, Gr., Proc. Am. Acad., v. 8, p. 644. (Linosy- 

 ris graveolens, T. & G., Fl. N. Am., 2, p. 234.) Shrubby, very much 

 branched, l-4 high, branches pulverulent-tornentose, whitish, some- 

 times smooth and greenish; leaves narrowly linear, not punctate, broader 

 ones 3-nerved, narrower ones 1-uerved, if -2' long, J"-l" wide; heads 

 large, 5 flowered, clustered, corymbose or panicled ; involucre oblong, 4" 

 long,!" wide, scales few, imbricated in about 3-series, glabrous, 5-ranked, 

 cariuate, outer ones Very short, innermost linear, half as long as the bril- 

 liant yellow flowers ; appendages of the style linear-subulate, longer than 

 the stigma-tic portion ; pappus of very fine soft bristles nearly as long as 

 the corolla ; achenia hairy. Hall & Harbour, 292. Canon City, Bran- 

 degee. Canby. Denver, Dr. Smith. On the Platte, Coulter. 



BiGELOViADouGLASii, Gr., 1. c., p. 645. ( Linosyris mscidiflora, T. & G. 

 I. c.) Shrubby, densely branching, 1 high, older branches with gray 

 bark, younger ones smooth, slightly angled; leaves narrowly or broadly 



