182 ORDER 70. COMPOSITE. 



summit. Disk-fls. 9. Invol. small, scales linear to filiform, reflexcd. Rc-cep. 

 naked, convex to oblong. Gyp. angled, clavate or turbinate. Pap. of 5 12 

 silvery, thin scales. Herbs with alternate, often decnrrent leaves, punctate, 

 resinous. Heads corymbous or solitary, showy, yellow. 



HELLENIASTRUM. Rays pistillate. Pappus awned. Heads corymbed.. .(a) 



a Disk globular, its corollas 5-toothed. Pappus awned Nos. 1 3 



a Disk oblong, its corollas 4-toothcd. Pappus* scales obtuse No. 4 



LEFTOPODA. Rays mostly neutral and fruitless. . .(b) 



b Heads corymbed, on short peduncles. Pappus awned. Disk globou* No 5 



b Head solitary, on a long ped. Disk convex. c Cypsela glabrous ...No*. 6, 7 



c Cypsela hairy Nos 8 10 



1 II. autiimiialc L. St. strongly winged ; Ivs. lanceolate, serrate, decurrent. heads 



loosely corymbed. 11 Damp. 2-3f. Hde. large, with drooping rays. Sept. Very bitter. 



2 H. parviflornm N. St. scarcely winged ; Ivs. lanceolate, subentire, slightly decnr- 



rent : sc. filiform, shorter than the globular disk ; hds. small, few. Ga. (Nuttall.) Scarce. 



3 H. Icnuilollam N. St. and numerous fastigiate branches wingless ; Ivs. crowded, 



linear or filiform, fascicled; sc. subulate. @ Fields, Ga. to La. l-2f. Rays spread 10". 



4 H. qiiadrident&tum Lab. Much branched, strongly winged ; Ivs. oblong, some 



lobed or toothed : disk oblong, longer than the rays. Swamps, S-W. l-3f. June- Aug. 



5 H. liracli^poda. St. strongly winged, branches few, corymbous, 1-headed ; hds. 



small (4"). rays 8-12, short (3-4") ; disk brown-purp., globular. Damp, 111. to Ga. l-2f. 



6 H.lieptopoda. Smooth ; st. simple, clustered, naked above; Ivs. lanceolate to ob- 



long-linear, some decnrrent; rays 20 30, spreading 1^'; disk conrex. Moist soils, 

 S. Car. to Fla. 2f. March, April. 



7 H. liicisuni. Smooth ; Ivs. lanceolate, sessile, not decurrent. sinnate-pinnatifld or 



incised ; rays about 40. in 2 or 3 rows ; fruit glabrous. Low barrens. Ga., and W. 2f. 



8 H. piiberuliim. Downy; sts. much clustered; Ivs. lance-linear, sessile, not do 



current : rays 20-30, broad, spreading 1J-2'; fr. hairy. Wet pine-barrens, S. 2f. Ap.,May. 



9 H. brevlfollnm. Pubescent above, single, often some branched ; Ivs. lance-obi, to 



linear, obtuse, the radical spatulate, cauline snbdecurrent. Wet. S. 2f. May, June. 



10 H. tim bruit u in. Smooth; often branched ; leaves lance-linear, subentire, acute, 

 decurrent ; pap. scales deeply cleft into a fringe of bristles. Barrens, Fla. l-2f. Apr. + 



68. BALDWINIA, N. Invol. scales closely imbricated in 2 4 rows. 

 Recep. convex, deeply honeycombed, with horny walls. Rays 8 20, neu- 

 tral, in 1 row, 3- toothed. Disk 5 . Cypsela silky-villous, immersed in the 

 cells. Pappus of 9 12 oblong scales, if Simple or corymbed. Leaves 

 alternate, linear, punctate. Heads yellow. July Sept. 



8. untflora N. St. simple, puberulent, with 1 large head ; rays about 20 ; Ivs. below 

 linear-spatulate ; pap. scales 9. Swamps, Va. and S. 1 2f. Rays spreading 2'. 

 ^ B. multiflora N. Glabrous, corymbonsly branched ; rays about 10; Ivs. crowded, 

 narrow-linear ; fruit truncate and ray-marked at summit, crowned with 12 obovato 

 scales. Sand hills, Ga. Fla. 1 3f. Raye If. (Actinospermum, T. & G.) 



69. MARSHALLIA, Schreb. FALSE SCABISH. Iiivol. scales lanct 

 linear, subequal, erect, in 1 or 2 rows. Recep. convex, with linear, rigid 

 pales. Fls. all tubular, 5 . Cor. lobes slender, spreading. Cyp. 5-angled. 

 Pappus of 5 or 6 membranous, awned scales. U Simple or branched, 

 with alternate, entire, 3-veined leaves, and solitary, long-stalked heads of 

 purplish flowers, resembling a Scabish. Ornamental. 



1 HI. lattfolla Ph. St. simple, leafy ; Ivs. ovate-lanceolate, acumii ate, sessile ; scales 



