454 Ordbe 70.— composite. 



ray angular, mostly awnless. — (J) Herbs with an acrid taste, opposite 



Ivs., solitary, yellow heads. Tropical. 



A, rdpess Pers. St. decumbent, rooting at the lower joints, diffuse ; Ira. lanceo- 

 late or oblong-lanceolate, acute at oacli end, petiolate, more or less serrate ; hda. 

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

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



60. VERBESrNA, L. Crown-beard. Heads few or many-flowered ; 

 rays $ , few or none, disk ^ ; scales in 2 or more series, imbricatedf 

 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. siegisb^okia Mx. St. 4-winged ; lvs. opposite, ovate or lanco-ovate, serrate, 

 acuminate, triple-veined, tapering io a winged petiole, hds. radiate, in trichotomous 

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

 and S. States, common. St. 4 to 6f high. Lvs. 5 to 8' by i 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 the 

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

 dislc-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. 



8. v. Binuata Ell. St. wingless, striate-amgkd, pubescent ; lvs. alternate, orate, 

 acuminate, contracted to a long, slender base, irregularly repand-toothed and .')ome 

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

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

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

 Lvs. feather-veined. Sept. — Nov. 



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

 rays ? ; disk $ ; 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. 

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

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

 yellow. 



JD. chrysanthemoides Lagasca. St. glabrous, much-branChed ; lvs. pinnately 

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

 at base, scarious, obtuse, with large, oblong glands ; outer scales 1 to 9, linear ; 

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

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

 Oct. (Tagetes papjxaa Tent.) 



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

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

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

 cleft ; aohonium villous with long hairs from its base ; pappus of G to 10 

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

 often dotted. Hds. on long, naked peduncles. 



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

 petiolate ; scales as long as the disk ; disls-fla, with long, subulate, pubescent 

 teeth ; receptacle smooth, (not fimbrillate I). — @ 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. Eays yellow. May — Aug. 



2 G-. pulchella Fouger. Pubescent; Iva, lanceolate, the lower short-petided. 



