ORDER 70. COMPOSITE. 167 



b Rays golden yellow. c Cypsela glabrous. Scales acute Nos. 6, 7 



c Cypsela pubescent. Scales obtuse Nos. 810 



d Clusters or racemes erect, not secund. Leaves feather-veined. . .(e) 

 d Clusters or racemes recurved and secund (one-sided).. . (g) 



e Heads large, with loose scales. Alpine plants Nos. 1113 



e Heads not large.-/ Plants glabrous. Rays 47 Nos. 14- 16 



/ Plants soft-downy. Rays 912 Nos. 17, 18 



g Leaves evidently feather-veined, mostly serrate., .(m) 



g Leaves evidently 3-veined. Herbs inland, not maritime. . .(h) 



g Leaves 3- or 1-veincd, fleshy. Very smooth, salt-marsh herbs Nos. 19, 20 



g Leaves not veiny, thick, subentire. Herbs some downy, inland... Nos. 2123 



h Leaves entire or very nearly so Nos. 24 26 



h Leaves serrate. k Stem smooth and glabrous Nos. 27 29 



k Stem roughish-pubescent Nos. 30, 31 



m Heads discoid, rays none. Southern Nos. 32. 33 



m Heads radiate. n St. hairy or downy. Lvs. rough or smooth.. 24, 34 37 



n St. glab. Lvs. glab. or not. o Rays 1-5 Nos. 3840 



o Rays 6 12.. (7?) 



p Racemes distant, loosely if at all panicled Nos. 41, 12 



p Racemes close, forming a compact panicle Nos. 43 45 



s lids, lanje, rays fewer than the disk fls. x St. and lane. Ivs. smooth. .Nos. 46-49 



x Plant hairy. Lvs. oblong.. Nos. 50, 51 

 s Hds. small, rays more numerous than the disk flowers. EUTHAMIA. .Nos. 52, 53 



1 S. pauciflosculosa MX. Bushy, glabrous, glaucous and some viscid ; Ivs. lance- 



linear, entire, sessile ; rac. erect, panicled ; fls. 5 7, rays 1 3, large. Coast, S. 



2 S. discoidea (Ell.) Bowny-canescent ; hds. about 12-flwd., with no rays ; rac. erect, 



in a long, narrow panicle ; Ivs. ovate to lanceolate, serrate. Ga. Fla., and W. 3f. 



3 S. sqnarrosa Muhl. Pubescent ; hds. very large, 00-flwd., rays 9 12 ; panicle long, 



spike-like ; Ivs. smooth, broad-oval to elliptic, serrate. Hills, Can. to Ga. 2 5f. 



4 S. petlolarls Ait. Pubescent, striate; hds. 20-25-flwd., rays 610; rac. long, com- 



pound ; Ivs. rough, small, oval to elliptic, the upper subpetiolate ; scales subulate, the 

 outer herbaceous, loose, spreading. Uplands, S. and W. 1 3f. (S. squarrulosa, C-B.) 



5 S. bicolor L. Hairy, simple ; leaves elliptical, the lower serrate ; heads glomerate, 



virgate-panicled above ; scales obtuse ; rays about 8, whitish. Hills. 2f. 

 /3. Mr*itta. Rays yellow, as well as the disk flowers. Penn. (S. hirsuta N.) 



6 S. Buckley! T. & G. Villous-pubescent ; leaves oblong, serrate, acute a't each end ; 



clusters shorter than the leaves ; fls. 15 20, rays 4 6 ; scales glabrous, rather acute ; 

 fruit compressed, glabrous. Interior of Alabama. 2 3f. Leaves 3'. October. 



7 S. moiiticola (T. & G.) Stem terete, slender, puberulent above ; Ivs. oblong-lance- 



olate, pointed, subserrate ; rac. approx. ; fls. 1215 ; fr. glabrous. Mts. N. Car. (Curtis). 



8 S. latlfblia Muhl. Stem flexuous, angular, downy above ; Ivs. broad-ovate or oval, 



acuminate both ways, deeply serrate ; racemes axillary and terminal, dense or loose ; 

 cypsela silky-pubescent ; flowers 912, rays 3^4. Woody vales. 2f. 

 /3. pubtn*. Pubescent, becoming woolly above. Mts. N. Car. (M. A. Curtis). 



9 S. ambigna Ait. Smooth or smoothish; st. tall, angled ; Ivs. long-lanceolate, acu- 



minate, finely serrate, the upper reduced and shorter than the racemes ; heads large ; 

 scales obtuse, oblong ; fruit hairy. Mts. N. Car. 3f. Leaves 4 5*. 

 0. Curtisii (T. & G.) Rac. shorter than the IVB. ; sc. lin.-oblong ; fr. silky. N. Car 



10 S. caesla L. Stem slender, recurved at top, terete, smooth, glaucous ; Ivs. lin. -lan- 

 ceolate, pointed, the lower serrate ; fls. 610, rays 3 5, oval ; racemes axillary, usually 

 short ; fruit puberulent. Hilly woods. 2 4f. Very elegant, wreath-like. 



11 S. tliyrsoidea Meyer. St. stout, simple, angular; Ivs. ovate, acute, sharply and 

 unequally toothed, the lower on long petioles*; hds. large, in a narrow, downy raceme 

 or panicle, rays 8-10; cyp. glabrous. Mt. woods. Me. to N-Y. 1^4f. Coarse and showy. 



