Aster undulatus L.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - Plants with a branched caudex or short rhizomes; stem 3-12 dm, densely pubescent with short, spreading hairs, varying to subglabrous below the infl; lvs entire or toothed, scabrous to glabrous above, usually shortly and rather loosely hairy beneath, at least the lower ones cordate or subcordate at base and petioled, lance-ovate to ovate, 3.5-14 × 1.5-7 cm, those above extremely variable in size and shape, but always at least some of them either sessile and cordate-clasping or with the petiole enlarged and auriculate-clasping at base; infl open, paniculiform, the branches and mostly well developed peduncles ± spreading and bracteate; invol 4-7 mm, usually minutely puberulent, its bracts imbricate, sharply acute or acuminate, sometimes very slender, more often a little wider as in no. 32 [Aster drummondii Lindl.], often minutely purple-tipped; rays 10-20, blue or lilac; achenes minutely hairy, at least above; 2n=?18, 32, ?36. Mostly in dry, open woods and clearings; Me. to Fla., w. to O., se. Ind., e. Tenn. and c. Miss., and se. La. (A. claviger; A. corrigiatus; A. gracilescens; A. loriformis; A. sylvestris; A. triangularis; A. truellius)
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Common Names
clasping heart-leaved aster