166 COMPOSITE. 



22. A. NoViE Angling, L. New England Aster. 



Stem stout, hairy; leaves very numerous, lanceolate, acute, entire, aurlcu-'atc- 

 claaping, ronghlsfa pubescent; invAuaetc Ai s line ar awl-shapad, loos. 1 , equal, near- 

 ly in a single row, viscid, as long as the disk; head; in a loose terminal i ankle; 

 achenia hairy. 



Moist grounds ; common. Sept. — Nov. Stem 3 to fei t high, almost hisped, with 

 spreading branches. J /cuds showy, large, crowded in close corymbs. Hays Aiolet- 

 purplc, sometimes rose-purple, very numerous. 



23. A. obloxgifolius, Nutt. Ollong-havcd Aster. 



Stem rigid, much branched above; leaves narrowly oblong or lanceolate, mucron- 

 ately pointed, entire, partly clasping, rougbish; involucre imbricated with broadly 

 linear scales appressed at the base, crowned with long and spreading follaceous 

 tips; hsads in corymbose panicles; achenia canescent. 



Banks of the Juniata. Huntingdon Co. Dr. Porter I in Gray's Flora. St:m 1 to 

 2 feet high, with the brant -hlets, the uppermost leaves smd involucre minutely' 

 roughish-glandular with resinous dots. LeavfiS 1 to 2 indies long. % to % wide. 

 Htads fewer and much smaller than ia A. Nova; Angliu?. Rays violet, pun le. 



4. ****** Or.TnoMEris, Torr. & Gray. — Scabs imbricated, with membranaceous 

 margins, destitute of green tips ; pappus of soft ui.d unequal capillary bristles. 



24. A. ACUMINATUS, Michx. Pointed-leaved Aster. 



Somewhat hairy; stem simple, ficsuous, angular; leaves oblong-lanceolate acumi- 

 nate,, serrate \. involucre imbricated with linear-lanceolate, pointed, thin scales; 

 heads in corymbose panicles. 



Mountains and woods. Aug. Stem r.bout 1 foct high. Lcrvcs conspicuously 

 pointed, coarsely toothed above, wedge-foim and entire at the base, 3 to 5 inches 

 long. Panicle corymbose, terminal, few-flowered, nearly or quite naked, Heads 

 rather large with 12 to IS long, white, often tinged with purple rays. 



5. ******* Oxytiupolicm, DC. — Pappus soft and capillary; achenia striate I 

 leaves thickish or succulent. 



25. A. FLEXUOSUS, Nu't. Perennial Salt Marsh Aster. 



S'cm very smooth, fiexuous, sparingly branched; leaves linear; loivcr larce-kncar 

 thick and fleshy, pointed, entire; involucre bell-shaped, withovatc-lanecolatj imbri-, 

 cated scales in many rows ; heads large, terminal on the ends of the branches ; rays 

 numerous, shorter than the involucre. 



Salt marshes. Sept. — Nov. Stem 1 to 2 feet high, wilh the whole plant very 

 smooth, Usually with a few spreading branches at the summit. Heads large, 1 to 2- 

 on the branchlets. Hays numerous, large, rale purple. Disk yellow. 



26. A. linifolius, L. Annual Salt Marsh Aster. 



Smooth; stem much branched, erect, spr< ad'ug; leaves linear-lanceolate, pointed, 

 entire, flat, on the branches awl-shaped; invducre oblong, wilh linear awl thaped 

 scales rn few rows ; heads in racemes or panicles. 



Salt marshes. Aug. — Oct. Stan 12 to IS inches high, thick, smooth, reddish, 

 very branching. Leaves smooth, sessile. Heads small, in a loose terminal panicle. 

 Says somewhat in two-rews. short, not projecting beyond the disk, more numerous 

 than the disk flowers, pale purple or nearly white. 



10. GALATELLA. Cass. 



Heads many-flowered, the rays few, s-terile. Involucre. 

 shorter than the flowers, the scales closely imbricated in 3 or 

 4 rowsj the outer often 3-nerved. Receptacle alveolate.. 



