ORDER 70. COMPOSITE. 181 



veined, tapering to the winged petiole ; hds. corymbous, yellow ; rays 1-5 ; fr. winjj 

 less. Jl Dry, W. and S. 5f. Aug. Sept. 



2 V. Virginica L. Stem narrowly winged; Ivs. alternate, lance-ovate, subserrate, 



feather-veined, tapering to the sessile base ; rays 3-4, white ; fruit narrowly winged, 

 if Dry woods, Pa. to La. 4f. August. 



3 V. sinuata Ell. St. wingless, striate-angled ; Ivs. alternate, ovate, acuminate, con- 



tracted to a long slender base and petiole, irregularly repand-toothed or lobed ; rays 

 35, white ; fr. broadly winged. 11 Sandy fields, S. 2-4f, with ample Ivs. Sept. Nov. 



62. DYSODIA, Cav. FALSE DOG-FENNEL. Rays s, disk $. Invd. 

 a single series of partially united scales, usually calyculate. Cyp. elongated, 

 4 -angled, compressed. Pap. scales chaffy, in 1 series, fimbriatcly and pal- 

 mately cleft into bristles. @ With large, pellucid glands. Lvs. mostly opp., 

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

 D. chrysanthemoides Lagasca. Smooth, much branched ; Ivs. pinnately-parted, 



lobes linear, toothed ; hde. with few very short rays. Prairies and waysides, W., mi- 

 grating E. If. An ill-scented plant. Aug. Sept. 



63. GAILLARDIA, Fong. Rays neutral. Scales in 2 or 3 series, acute, 

 leafy, spreading, outer largest. Recep. convex, fimbrillate (naked in No. 1). 

 Rays cuneiform, 3-cleft. Cyp. villous with long hairs from its base. Pap- 

 pus of 610 long awns, which are membranous at base. Leaves alternate, 

 entire, often dotted. Heads on long, naked peduncles. May Aug. 



1 G. lanceolata MX. Lvs. lanceolate to linear ; sc. as long as the dark purple disk ; 



rays 810, small, yellow ; recep. naked. @ Barrens, S. Car. to Fla. and Tex. l-2f. 



2 Cr. PICTA. Lvs. lanceolate ; sc. hairy, longer than disk ; rays 10-12, violet-purple with 



yellow teeth ; recep. fimbrillate with slender awns. (T) y Dak. to Tex. 2f. Handsome. 



64. GAZANIA, Gsert. Rays neutral, disk-fls. $ . Sc. in several rows, 

 united at base. Cyp. wingless, densely hairy. Pap. chaffy. Recep. alveolate. 

 From S. Africa, Hds. solitary, showy, on naked stalks. Rays tricolored. 

 O. SPECIOSA. Trailing, half-shrubby : leaves oblong, entire or pinnatifid, smooth above, 



white-tomentous beneath ; rays (10 orange-yellow, each with an eye of white and 

 chocolate at its base. Singularly beautilul. 



65. PALAFOXIA, Lagasca. Rays $ or 0. Sc. 815, scarious at tip, 

 shorter than the disk. Recep. flat, naked. Cyp. 4-angled, slender at base. 

 Pap. of 6 12 membranous, denticulate, pointed scales, it 3 With scattered, 

 narrow, entire Ivs. and cyanic fls. in a corymb. (Polypteris, N.) Jl.-Sept. 



P. integrlfolla T. & G. Rough ; Ivs. lance-linear, 1-veined ; rays none ; pap. of 8 10 

 pointed scales with fringed edges. Barrens, Ga. and Fla. 3 5f. Heads purplish. 



66. HYMENOFAPPUS, L'Her. Fls. all $ , tubular. Sc. 612, in 2 

 series, oval, obtuse, colored. Recep. small, naked. Anth. exserted. Cyp. 

 broad at the summit, attenuate to the base. Pap. of many, short, obtuse, 

 membranous scales in 1 series, (g) if Hoary-villous. Stem grooved and 

 angled. Leaves alternate, pinnately divided. 



H. scabiosceus L'Her. Leaf segm. linear-oblong ; corymb simple ; sc. obovatc, white, 

 greenish at base, longer than the disk ; fr. pubescent. W. and S. 1 2f. Apr.-- June. 



67. HELENIUM, L. Rays 9 or neutral, 3-5-cleft at the expanded 



