454 Ordeb ^0.— OOMPOSITjE. 



ray angular, 'itiostly awnless. — (D Herbs with an acrid taste, opposite 



Ivs., solitary, yellow heads. Tropical. 



A, rdpens Pers. St. decumbent, rooting at the lower joints, diffuse ; Ivs. lanceo- 

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

 solitary, on axillary and terminal peduncles ; scales lance-ovate ; rayS 10 to 1 2.^ 

 Wet places, S. Car. to Pla. Sept., Oct. (Spilanthes Kuttallii, T. & G.) 



60. VERBESrHA, L. Cbown-beabd. Heads few or many-flowered; 

 rays § , few or none, disk i^ ; scales in 2 or more series, itnbricated, 

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

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

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



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

 acuminate, triple-veined, tapering to a winged petiole, lids, radiate, in triohotomous 

 cymes; rays 1 to 5; acb. wingless; fls. yeUow. — 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, tlio latter 

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



2 V. Virginioa L. St. narrowiy-winged, pubescent above ; hs. alternate, lanceo- 

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

 sessile base ; lower ones decurrent ; corymbs compound, dense ; rays (ovat) and 

 dish-fls. white ; ach. winged. — Dry woods, Penn. to La. Stem 3 — 5f high, and 

 leaves beneath often more or less tomentous. Heads about 20-flowered, the 3 or 

 4 rays scarcely J' long. Aug. Sept. 



3 V. sinu^ta Ell. St. wingless, striate-angled, .pubescent ; hs. alternate, ovate, 

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

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

 the disk white ; ach. broadly winged. — Sandy soil, S. Car., G-a. (Feay), Pla. St. 

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

 Lva feather-veined. Sept. — Nov. 



61. DYSO'DIA, Cav. False Dog-fennel. Heads many-flowered ; , 

 rays ? ; disk 3 ; involucre of a single series of partially united scales, 

 usually calyculate ; achenia elongated, 4-angled, compressed ;• pappus 

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

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

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

 yellow. 



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

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

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

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

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

 Oct. (Tagetes papposa Tent.) 



62. GAILLAR'DIA, Fougeronx. 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. lauceol^ta Mx. Pubescent; lvs. lanceolate or linear, sessile, the lower 

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

 teeth; receptacle smooth, (not flmbriUate !). — (g) Barrens, S. Car. to Ma. 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. , Eay.s yellow. May — Aug. 



2 G. pulcbella Fouger. Pubescent; Iv^ lanceolate, the, lower short-petioled, 



