454 Order 70.— COMPOSITE. 



ray angular, mostly awnless. — CD Herbs with an acrid taste, opposite 



lvs., solitary, yellow heads. Tropical. 



A. repens Pers. St. decumbent, rooting at the lower joint3, diffuse ; lv3. lanceo- 

 late or oblong-lanceolate, acute at each end, petiolate, more or less serrate ; lids, 

 solitary, on axillary and terminal peduncles; scales lance-ovate; rays 10 to 12. — 

 Wet places, S. Car. to Fla. Sept., Oct. (Spilanth.es Nuttallii, T. & G.) 



60. VERBESFNA, L. Crown-bkard. Heads few or many-flowered ; 

 rays $ , lew or none, disk $ ; scales in 2 or more series, imbricated, 

 erect ; chaff concave, or embracing the flowers ; achenia compressed, 

 2-awned. — U American plants, sometimes shrubby. Lvs. often decur- 

 rcnt, serrate or lobed. Hds. solitary or corymbous. 



1 V. siegisbeckia Ms. St. 4- winged ; lvs. opposite, ovate or lance-ovate, serrate, 

 acuminate, triple- veined, tapering to a winged petiole, hds. radiate, in trichotoinous 

 cymes; rays 1 to 5 ; ach. wingless; Jls. yellow. — Roadsides and dry fields, "W. 

 and S. States, common. St. 4 to 6f high. Lvs. 5 to 8' by 3 to 4', thin. Hds. 

 about 25-flowered, with yellow corollas, and yellow, lanceolate rays, the latter 

 about 9" long. Aug., Sept. (Coreopsis alata Ph. Actinomeris alata Nutt.) 



2 V. Virginica L. St. narrowly-winged, pubescent above ; lvs. alternate, lanceo- 

 late or lance-ovate, subserrate, scabrous, acute or acuminate, tapering to tho 

 sessile base; lower ones decurrent; corymbs compound, dense; rays {oval) and 

 disk-fls. white; ach. winged. — Dry woods, Penn. to La. S«tem 3 — 5f high, and 

 leaves beneath often more or less toruontous. Heads about 20-ilowered, tho 3 or 

 4 rays scarcely V long. Aug. Sept. 



3 V. ainuata Ell. St. wingless, striate-angled, pubescent ; lvs. alternate, ovate, 

 acuminate, contracted to a long, slender base, irregularly repand-toothed and some 

 of them sinuaie-lobed or pinnatifid ; hds. corymbous ; rays 3 to 5, oval, and with 

 the disk ivhite; ach. broadly winged. — Sandy soil, S. Car., Ga. (Feay), Fla. St. 

 2 to 4f higk, with ample, coarse lvs. Hds. similar to tho last, about 12-flowerod. 

 Lvs. feather-veined. Sept. — Nov. 



6i. DYSO'DIA, Cav. Falsk Dog-fennel. Heads many-flowered ; 

 rays ? ; disk £ ; involucre of a single series of partially united scales, 

 usually calyculatc ; achenia elongated, 4-anglcd, compressed ; pappus 

 scales chaffy, in one series, fimbriately and palmately cleft into bristles. 

 — ® Herbs with large, pellucid glands. Lvs. mostly opposite and 

 pinnately parted or toothed. Hds. paniculate or corymbous. Fls. 

 yellow. 



D. chrysanthemoldes Lagasca. St. glabrous, much-branched; lvs. pinnately 

 parted, lobes linear, toothed ; hds. terminal on tho short branchlets ; scales united 

 at base, scarious, obtuse, with large, oblong glands; outer scales 7 to 9, linear; 

 pappus bristles slender, as long as the involucre. — Prairies and roadsides, 111., 

 Mo., to La. An ill-scented plant, about If high, with finely divided lvs. Aug. — 

 Oct. (Tagetes papposa Vent.) 



62. GAILLAR'DIA, Fougeroux. Heads radiate ; rays neutral ; scales 

 in 2 or 3 series, acute, leafy, spreading, outer largest ; receptacle con- 

 vex, fimbrillate (naked in the following species) ; rays cuneiform, 3- 

 cleft ; achenium villous with long hairs from its base ; pappus of 6 to 10 

 long awns, which are membranous at base. — Lvs. alternate, entire, 

 often dotted. Hds. on long, naked peduncles. 



1 G. lanceolata Ms. Pubescent; lvs. lanceolate or linear, sessile, the lower 

 petiolate ; scales as long as the disk ; disk-fls. with long, subulate, pubescent 

 teeth; receptacle smooth, (not fimbrillate !). — @j Barrens, S. Car. to Fla. and Tex. 

 St. 1 to 2f high, slender, ending in long, naked flower-stalks. Lvs. 1 to 3' long, 

 rather oblong. Scales and disk purple. Rays yellow. May — Aug. 



2 G. pulchella Fouger. Pubescent; lvs. lanceolate, the lower short-petioled. 



