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Flora Medica

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ASTERACEJE.Florets of the ray 1-200, pale purple, slightly bifid. Achasnia oblonghispid. Said to be a powerful emmenagogue. It iscommonly usedin the United States as a diuretic.STENACTIS.Head many-flowered, heterogamous;florets of the ray in ] row,J , narrow, ligulate;of the disk cf, 5-toothed. Receptaclenaked, dotted, flat, or convex. Involucral leaves in 2-3 rows,imbricated, narrow. Achaenium oblong, compressed. Pappusof the ray in 1 row, setaceous, deciduous ;of the disk in 2 rows,the outer very short, the inner like that of the ray. DC.915. S. annua Nees ast. 273. DC.prodr. v. 298. Erigeronheterophyllum Willd. iii. 456. Aster annuus Linn, sp.pl. 1229.Fl. dan. t. 486. Erigeron annuum Pers. ii.syn. 431. Phalacrolomaacutifolium Cass. diet, xxxix. 405. Common in NorthAmerica whence it has migrated into Europe.Stem erect, corymbose, many-headed. Lower leaves ovate ; upperlanceolate, dentate-serrate, rather hairy. Involucre hispid. Ligulaewhite. Employed in the United States as a diuretic.SOLIDAGO.Head several-flowered or many-flowered, radiant ;ligulae5-15, oblong, ? ,in 1 row, often wide apart; florets of the disk

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