• COMPOSIT.E. (COMPOSITE FAMIIA.) 14*J 



brous: scapiform flowering stems an inch to a span high, mostly raonocepha- 

 lous: hracls of the involucre from ovate to ovate-hincfohitp^ mucronatel i/ acute or 

 acuminate, destitute of greenish tips; the outer a little shorter tlian the inner. 

 — Proc. Am. Acad. vii. 353. In the mountains from the Siiskatchewan to 

 California and Oregon. 



Var. glabratUS, Eaton. Glabrous and sincjoth or nearly .so : flowering 

 stems disposed to be leafy above and to branch, s(j bearing 2 or 3 heads. — 

 Bot. King Exp. 161. Wyoming to Nevada and Arizona. 



15. A. armerioides, Gray. Smooth and glaltrous : flowering stems 

 naked above for 1 to 3 inches, sometimes nearly .scapiform: bracts of the 

 campanulate involucre broadlij oval, rounded-obtuse or retuse, nmticous, of about 

 three lengths ; the outermost much shorter, most of them greenish at apex. — 

 Rocks on mountains, from Wyoming to New Mexico and S. Utah. 



* * * Heads mostltf solitarij, terminating leafg branches : involucre of lanceolate 

 or linear bracts in few ranks and of somewhat equal length ; outer with con' 

 spicuous leaf I tips, or loose and foliaceous, passing into leaves: rai/s few and 

 conspicuous, or wanting: pappus soft and slender: low and mang-stemmed 

 from a suffrutescent base : leaves soft, spatulate-oblong to broadlg linear, sps- 

 sile, entire. 



16. A. SUfifruticOSUS, Gray. Destitute oftomentum: stems glandular- 

 pubescent or puberulent : heads ^ to ^ inch high: rags 2 to 5 and somewhat 

 exserted, or none: disk-flowers 10 to 30. — Proc. Am. Acad. vi. 542. Alpine 

 or subalpine, from California to Oregon and N. Wyoming. 



17. A. Macronema, Gray. Stems stouter, whitened bg a dense and 

 close tomentum : head commonly larger, one inch long : rags alwags wanting. — 

 Log. cit. Mountains of Colorado, Wyoming, and westward. 



10. BIGELOVIA, DC. Rayless Goldex-rod. 



Mostly suffrutescent or more shrubby plants, generally few-flowered, but 

 grading easily into both Solidago and Aplopappus. Includes Linosgris. 

 « Heads comparativelg large, at least ^ inch long, but narrow, 5 to 20-Jlowered : 

 bracts of the involucre chartaceous and acuminate, some of the outer prolonged 

 into a slender herbaceous tip ; when numerous the vertical ranks are more or 

 less apparent: loio and suffrutescent, with linear entire leaves, not punctate 

 nor viscid. 

 t- Stgle-appendages conspicuouslg exserted: aJcenes pubescent: stems and 

 branches whitened (at least ivhen young) bg a close tomentum. 



1. B. Pavryi, Gray. Stems rather strict, leafy to the summit: leaves 

 linear, 2 or 3 inches long, 2 lines or less wide, obscurclg S-nenrd, glabrous; 

 upper ones hardly diminished in size and overtopping all the heads of the 

 strict and narrow thgrsifonn-virgate panicle: heads 10 to \b-flowered : bracts of 

 the involucre about 12. — Parks of the Colorado mountains. 



2. B. Bowardi, Gray. Low, rather tufted, canescently tomentulose 

 when young : leaves narrowly linear, rigid, an inch nr two long, barely a line 

 wide, obscureli/ \ -nerved : upper mostly overtopping the glomerate narrow 

 heads: involucre 5-floirered ; its bracts 15 to 18. — Proc. Am. Acad. viii. 641 

 Parks of the Colorado mountains to New Mexico and Utah. 



