TO. COMPOSITE:. 



42 A. simplex Willd. Loosely corymbons-paniculate, smoothish: Ive. .auccoiale 

 acuminate, the lower serrate ; heads scattered ; scales loosely imbricated, linear-subu- 

 late. Low grounds : common. 3 6f. Heads twice larger than No. 41, blue to white. 



ft. ittt trg-en*. Diffusely branched, loosely racemous ; branches hairy in lines. 



43 A. teniiifolius L. Paniculate-branching, with 1-flowered branchlets ; Ivs. linear- 

 lanceolate to lance-linear, slender-pointed, sessile, remotely serrulate, upper entire; 

 scales linear-subulate, equalling the disk. Moist fields. 2 6f. 



ft. btlUriittonm. Leaves scabrous, slightly clasping ; scales loosely imbricated, 

 y. iiiMti<-/i*. Leaves and strict ascending branches in 2 rows ! 111. (Mr. J. Wolf.) 



44 A. siibasper Lindl. ? Pubescent above; racemous-branched, branches short, 

 dense-flwd. ; Ivs. lance-acuminate, appressed-serrate, rough, attenuate to a petiole, up 

 per reduced, entire, sessile ; ?nvol. closely imbricated ; rays purp. Dry. 111. 2f. (Wolf. 



45 A. erlcoides L. Smoothish; branches virgate, branchlets secund, 1-headed : Ivs 

 lance-lin. to subulate ; hds. small ; sc. as long as disk, with subulate-mncrouate spread 

 ing tips. Rocky fields. l-3f. Lvs.4'-4", attenuate-mncronate. Rays white or purplish 



-46 A. racemoaus Ell. Rough-downy; branches slender, erect ; hds. very small (2") 

 epicate-racemous, crowded above ; Ivs. linear, sessile, rigid, & 3". Coast, S. Car. 2f. 



47 A. miiltiflorus L. Grayish-downy, diffusely branched ; Ivs. linear, entire, ess., 

 obtuse-inucronate ; hds. small ; sc. with obtusish spreading tips. Dry fields. If. Very 

 bushy, with crowded racemes. Rays about 12. pale, 2 3" long. 



48 A. graminlfoliiis Ph. Slender, with filiform erect branches. 6- -12'- Ivs. linear, 

 crowded below ; ped. slender, leafless. 1-flwd. ; sc. subulate-linear ; rays abo.,t20, white 

 or rose. Rocks, Vt. N. II. : rare. (Willoughby Lake. Vt., Bradford, Vt, Whi ' Mts. 1 ) 



49 A. acuminatus MX. St. simple, flexuous, angular, branching into a corymbous 

 panicle above ; Ivs. broad-lanceolate, narrowed and entire at the base, serrate and ac.n 

 miiiate ; scales lax, linear. Wooded hills, N. If. Rays 12 + , long, white. 



50 A. 11 em oral is Ait. Branches corymbed or ; ped. 1-flwd., nearly naked, filiform- 

 Ivs. narrowly lanceolate, acute at each end. veinless, subentire : sc. very acute, loose, 

 shorter than the disk ; rays long, about 20. Wet woods. If. White-purple. 



51 A. ptarmlcoides T. & G. St. corymbous-fastigiate above; Ivs. lin. -lanceolate 

 acute, rough-margined, entire, lower ones dentate, attenuated into a short petiole , 

 rays short, snow-white. Rocky shores, Vt. to Mo. Rare. Heads rather large. 



52 A. flexuosus N. Smooth, slender, flexuous; branches leafy, 1-flwd. ; Ivs. fleshy, 

 long-lance-linear to subulate ; hds. large ; rays short, many, purple. Marshes. If. 



53 A. Chapmanii T. & G. Smooth, slender, strict; branches filiform, 1-flwd. ; Ivs. 

 liiu'ar-subulate ; rays longer than invol., 20 30, purp. ; cyps. glabrous. Swamps, Fla. 



54 A. llntfollus L. Sea Aster. J' Smooth, much branched, paniculate; Ivs. lance- 

 linear to subulate ; scales in 3 rows : rays minute, scarcely exserted. Marshes. If. 



55 A. siihiilutiiK MX. @ Smooth, slender, much branched, corymbed ; Ivs. linear- 

 subulate; rays many, narrow, in 1 row, longer than the disk, blue. Wet. S. 1 3f. 



ft. >jcili*. Taller (2 4f 1, less branched ; heads few, rays pale purple. Ga. 



19. DIFLOPAFPUS, Cass. DOUBLE-BRISTLED ASTER. Ray-flowers 

 about 12, 5 . Disk-flowers oo, 5 . Invol. imbricate. Scales narrow, des- 

 titute of green tips. Recep. flat, subalveolate. Pap. double, the exterior 

 very short (about " long), interior copious, capillary. Fruit compressed, 

 y Lvs. entire, alternate Heads corymbous or few, rays cyanic, disk yellow. 



\ Itays violet. Achenia silky. Bristles of the inner pappus alike. Sept. Oct No. 1 



S Rays whitish. Some of the longer bristles clavellatc.Ach. smoothish. Aug..Nos. 2, 3 



Ach. villous. Sept. Oct... No. 4 



1 D. linariiloliiiH Hook. St. clustered, leafy : branches 1-flwd., fastigiate ; Ivs. lin., 



entire, 1-veined. obtuse, rigid, rough. Dry places. If. Heads rather large, showy. 



2 D. uinbellatuw Hook. Smooth, simple, strict, with 00 heads in a level corymb; 



