188 
nite tip (Linosyris Wrightii and L. heterophylla Gray),—Banks of streams and saline 
soil, western Texas. Var. HIRTELLA Gray has leaves cinereous-hirtellous or hirsute- 
pubescent and roughish (L. hirtella Gray). 
4. B. coronopifolia Gray. Suffrutescent, the stems freely branching and slender, 
leafy, 3 to 6 dm. high: leaves linear-filiform and pinnately parted into 3 to 9 divi- 
sions not thicker than the filiform rhachis and setulose-mucronate: heads 10 to 12- 
flowered, somewhat thyrsoid-glomerate; involucre as in the last. (Linosyris corono- 
pifolia Gray)—Along the Rio Grande. 
5. B. Drummondii Gray. With many erect or ascendiug partly herbaceous 
branches or stems from a woody base, about 3 dm. high: leaves all narrowly linear 
and entire, with tapering base: heads 18 to 30-flowered, rather numerous in a corym- 
biform cyme: involucral bracts with short green or greenish tips. (Linosyris Drum- 
mondii Torr. & Gray)—Coast of Texas and the Lower Rio Grande. 
22. SOLIDAGO L. (GOLDEN-ROD.) 
Perennial herbs, with mostly wand-like stems, nearly sessile (never 
heart-shaped) stem leaves, small racemed or clustered radiate heads 
(flowers of both disk and ray yellow), pistillate rays, appressed invo- 
lucral bracts mostly destitute of herbaceous tips, small naked recepta- 
cle, many-ribbed nearly terete achenes, and a simple pappus of equal 
capillary bristles. 
§1. VirRGAUREA, Rays mostly fewer than the disk-flowers: heads all more or less 
pedicelled. 
* Bracts of the much imbricated and rigid involucre with abruptly spreading herbaceous tips : 
heads in clusters or glomerate racemes disposed in a dense somewhat leafy and inter- 
rupted wand-like compound spike. 
1. S. petiolaris Ait. Minutely hoary or downy: stem strict, simple, 3 to 9dm. high: 
leaves small, 1 to 5cm. long, oval or oblong, mucronate, veiny, rough-ciliolate; the 
upper entire and abruptly very short-petioled; the lower often serrate and tapering 
to the base: heads few, in a wand-like raceme or panicle, on slender bracted pedicels: 
rays about 10, elongated: bracts of the pubescent involucre lanceolate or linear-awl- 
shaped, the outer loose and spreading, more or less foliaceous.—Extending from the 
Gulf States into Texas. Var. aNGuUsTA Gray has greener glabrate narrower leaves, 
nearly all entire, the lower sometimes 7.5 to 10 cm. long and tapering into a margined 
petiole.—Near Fredericksburg, Gillespie County (Thurber ). 
* * Involucral bracts without green tips and wholly appressed, 
+ Heads small (not over 6 num. long), clustered along the stem in the axils of the feather- 
veined leaves, or the upper forming a thyrsus: achenes pubescent. 
2. S. ceesia L. Smooth: stem terete, mostly glaucous, at length much branched 
and diffuse: leaves lanceolate or oblong-lanceolate, serrate, pointed, sessile: heads 
in very short clusters or somewhat racemose-panicled on the branches.—A common 
species of the Atlantic States, extending into Texas, Var, PANICULATA Gray 18 panic- 
ulately branched above, smaller-leaved, and with copious flo vers, the clusters of 
heads becoming racemose-paniculate toward the end of tne branches. 
++ Heads mostly large, many-flowered, forming an erect terminal thyrsus: leaves featler- 
veined, numerous, short, sessile, entire, uniform in size and shape. 
3. S. BigeloviiGray. Cinereous-puberulent, 6dm. high: leaves oval and oblong, 
mostly obtuse at both ends: thyrsus rather loose: involucre broad: achenes minutely 
pubescent or glabrate.—Mountains of western Texas. Var. WRIGHTII Gray has 
sometimes narrower leaves, and a simple short thyrsus of comparatively tew heads. 
