310 . COMPOSITE. Hemizonia. 



Prodr. 1. c. — Dry ground, W. California, common from Monterey to San Diego ; first coll. 

 by Coulter, Douglas, &c. Passes into 



Var. raniosissima. Diffuse, sometimes decumbent : upper leaves mostly entire : 

 beads less fascicled or all scattered: akcncs at maturity rugose. — II. ramosissima,Jjent\\. 

 Bot. Sulpli. 30; Gray, Bot. Mex. Bound. 100, & Bot. Calif, i. 3G2. — Same range, and to 

 San Bernardino Co. 



Var. Lobbii (II- Lohbii, Greene, Bull. Torr. Club, ix. 109, founded on a single speci- 

 men, i-oll. by Lobb, tliouglit to come from near Monterey) appears to be notbing more tban 

 a tall and slender form of tliis species, Avitb stem 2 feet bigb, long and slender brancbes, 

 very small and numerous leaves on tbo brancblets, rays reduced to 3 or 4, and disk-flowers 

 to about tbe same number, eacli subtended and partly enclosed by a free bract. But speci- 

 mens liardly sufficient. 



* ■* * Heccptaclo Hat: all the flowci-s pi;btended and akenes partly enclosed by bracts; the 

 corolla-tubes glandular: ligulcs yellow and broad, 5 to 8 : ray-akcncs somewhat 5-nerved or 

 angled, i. e. ventral face somewhat curinate-augkd, with short upturned beak: disk-tlowers 8 to 

 15, with akenes mostly sterile and destitute of pajipus : slender virgately branched or panicu- 

 late annuals, with lowest cauline leaves connnonly laciniate-dentate, the u])per all small and 

 linear, none of them at all pungently pointed, but those of the Cranchlets lipped with a sessile 

 truncate gland. 

 H. Heermanni, Greene. Viscid and somewhat pubescent or hirsute, licavy-scented, 

 paniculately branched, 1 to 3 feet high, the minute leaves of the diffuse ilowering brancblets 

 rather scattered : involucre nearly hemispherical; its bracts (and rays) 5 to 9, viscid-pubes- 

 cent and copiously beset with pedicellate glands ; the terminal gland inconspicuous : beak 

 and stipe of ray-akenes somewhat conspicuous: disk-flowers 10 to 15. — Bull. Torr. Club, 

 ix. 15. //. viucradenia, Durand, Pacif. 11. Kep. v. 10, not DC. II. ramosissima, in part, 

 Kothrock in Wheeler Rep. vi. 365. — Southern part of California, from Santa Barbara to 

 Kern Co., &c. , first coll. by Ileermann. 

 H. virgata, Gray. Less pubescent and viscid or nearly glabrous, the stem or long branches 

 virgate and bearing numerous racemosely or somewhat paniculately disposed lieads on short 

 densely foliolose brancblets ; their leaves Heath-like, line long, all glandular-truncate : invo- 

 lucre campanulate or in age oblong ; its mostly 5 bracts becoming coriaceous, with stout 

 involute tip bearing a large truncate gland, the back nearly glabrous and sparsely beset with 

 some stout pedicellate glands or gland-tipped processes : stipe of ray-akenc hardly any, and 

 its beak short: disk-flowers 7 to 10. — Bot. Mex. Bound. 100, & Bot. Calif, i. 303. — Cali- 

 fornia, from Lake Co. to Los Angeles, &c. ; first coll. by Fremont. 



§ 3. Calycadenia, Gray, 1. c. Ray-flowers few (1 to 7), with very broad 

 palmately 3-lobed or parted ligule ; their akenes mostly dull, obovoid-triangular 

 and little oblique ; the terminal areola scarcely if at all eccentric : disk-flowers 

 surrounded by a circle of herbaceous bracts (forming a kind of inner involucre), 

 which are connate into a cup or rarely separable ; their akenes well formed and 

 the outer not rarely fertile (then hairy), turbinate-quadrangular or slightly ob- 

 compressed, straiglit, bearing a conspicuous paleaceous pappus : annuals, with 

 entire narrowly linear leaves, often becoming filiform by revolution of the mar- 

 gins ; those of the axillary fascicles and clusters near the heads nsually tipped 

 with tack-shaped or when dry saucer-shaped conspicuous glands, which are either 

 sessile or short-stipitate, sometimes similar glands along their backs or edges : 

 heads as it were involucrate by some bract-like leaves. — Calycadenia, DC 

 Prodr. V. 695. 



# Wholly destitute of tack-shaped glands, paniculately and diffuseh' much branched and heads 



scattered: rays 3-parted down to the slender tube, and disk-corollas cleft into oblong-linear 



lobes; both white: raj'-akenes almost beaked. — Osmadenia, Nutt. 



H. tenella, Gray. Slender, 6 to 18 inches high, sparsely hirsute-pubescent or hispid, and 



filiform brancblets minutely viscid-glandular : leaves almost filiform : involucre cylindra- 



ceous-campanulate : ray-flowers 3 to 5 ; their akenes rugose, short-stipitate and abruptly 



rostellate-apiculate : disk-fiowers 5 ; their pappus of -t or 5 lanceolate palese tapering into 



