COMPOSIT.E. (COMPOSITE FAMILY.) 185 



broadly lanceolate, denticulate or entire, 4 to 8 inches lon^', mostlv narrowed 

 at base into a short margined petiole : lieads an inch high : bracts of the invo- 

 lucre narrowly lanceolate, numerous : rays nearly 2 inches long : akenes 4 

 lines long, either prismatic-quadrangular or flattish, lanorvcd: pappus some- 

 times minute, chaffy coroniform and cleft into few or several teeth. Xurtheru 



Rocky Mountains, in moist valleys, S. W. Montana to E. ( )regon. 



* * Rays brir/ht i/elloir. 

 ■4- Glabrous and smooth fhrour/Jwut, usuallij balsamic-viscid : leans hinnroldtc to 



obi on (J. 



2. W. amplexicaulis, Nutt. A foot or tw<j high, robust : leaves moKtlv 

 lanceolate-oblong, entire or denticulate; radical often a foot or more long; 

 upper cauline partly clasping by a rounded or somewhat narrowed Ijase : heads 

 solitary or several, short peduncled : involucral bracts l»road]y lanceolate, one or 

 two outer ones occasionally foliaceous and larger : rays 1^ inches long: akones 

 with a conspicuous crown cleft into acute teeth, and sometimes a small awn. 

 — From Colorado to Montana and Britisii Columbia. Called " IV-ik " bv the 

 Indians. 



-I- H- Ilirsutely pubescent or scabrous: leaves elongated-lanceolate or litwar. 



3. W. Arizonica, Gray. Hirsutelij pubescent, a foot high, bearing a sin- 

 gle or few heads : leaves oblong-lanceolate, tapering to both ends, t)r the upper 

 and sessile cauline broader : involucre of rather foliaceous and erect bracts : 

 rays 8 to 12 : pappus a veri/ narrow crown, extended into 3 or 4 stout sul)ulate 

 teeth, or into 1 or 2 short awns. — Proc. Am. Acad. viii. 6.55. S. Colorado to 

 S. Utah and Arizona. 



4. W. seabra, Hook. Very scabrous, a foot or two high, rigid : cauline 

 leaves linear, thick, 4 to 6 inches long, ^ inch wide, sessile, attenuate-acute: 

 involucral bracts imbricated in 3 or 4 series, all the outer with an appressed 

 base, which is acuminate into a longer subulate Jiliform spreading very hispid- 

 scabrous appendage: rays several, -^ inch long: akenes acutely angled, the 3 or 

 4 angles extended into a pappus of as many short blunt teeth, which are barely 

 confluent at base. — New Mexico and S. Colorado to Utah and Wyoming. 



38. GYMNOLOMIA, IIBK. 



With erect branching stems, alternate or opposite leaves, and heads of yellow 

 flowers ; resembling small-flowered species of Ilelianthus. 



1. G. multiflora, Benth. & Hook. A foot to a yard high, pubescent or 

 scabrous, sometimes al.so hispid, often much branched : leaves from narri>wly 

 linear to lanceolate, either alternate or mainly opposite, entire or t)b.«iinrflv 

 denticulate: rays 10 to 15, golden yellow: disk hemispherical, in age littU- 

 more elevated and recej)tacle obtusely conical; its bracts linear. ol)tuse or the 

 inner acute: akenes smooth. — Ildiomeris multiflora, Nutt. Very jiolynior- 

 phous. From Arizona to Wyoming and W. Texas. 



39. HE L I ANT H US, L. Sunklowkr. 



Usually tall or coarse ; with a part or all the leaves opposite and simple; 

 heads peduncled and terminating the stems or branches, with yellow ray.*, 

 and either yellow or purple disk-flowers. 



