Symphyotrichum adnatum (Nutt.) G.L. Nesom  
Family: Asteraceae
Scale-Leaf American-Aster
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Luc Brouillet, John C. Semple, Geraldine A. Allen, Kenton L. Chambers, Scott D. Sundberg+ in Flora of North America (vol. 20)
Perennials, 30-120 cm, cespitose; with herbaceous or thick, woody, sometimes cormoid caudices. Stems 5+, erect to scandent-sprawling (brown, branched from middle), moderately to densely finely hairy. Leaves (yellowish green) thick, firm, margins entire; basal early deciduous, sessile or subpetiolate, blades (3-nerved) oblanceolate to obovate, 10-43 × 7-15 mm, bases cuneate, margins scabrous, apices acute to obtuse , faces sparsely finely scabrous; proximal cauline sessile, blades narrowly obovate to oblanceolate, 20-35 × 5-13 mm, bases auriculate-clasping, margins finely scabrous, apices acute to obtuse, faces finely scabrous, shiny; distal sessile, blades lanceolate to linear, 3-10 × 1-4 mm, gradually reduced to bracts distally, bases subclasping and adnate to stem for 1 /2 + length, apices narrowly acute, white-spinulose, faces finely scabrous, viscid, minutely stipitate-glandular. Heads in ± open, paniculiform arrays, branches initially patent then ascending or divaricate. Peduncles densely short-strigose, glandular, bracts linear, adnate, densely short-strigose. Involucres campanulate, 4-6.5 mm. Phyllaries in 4-5 series, oblong to oblanceolate, strongly unequal, bases (tan) ± indurate, margins hyaline, finely scabrous, green zones lenticular, in distal 1 / 4 - 2 / 5 , apices obtuse, mucronate to finely subspinulose, faces scabrellous-puberulent, stipitate-glandular. Ray florets 10-20; corollas light to dark lavender, laminae 5-8 × 0.5-1.5 mm. Disc florets 12-25; corollas yellow, 3.7-7 mm, throats narrowly funnelform, lobes triangular, 0.4-0.8 mm. Cypselae tan to brown, obovoid, not compressed, 2-2.5 mm, 6-10-nerved (faint), faces sparsely strigose; pappi tan, 3.75-8 mm. 2n = 20.

Flowering Oct-Dec. Sandy, clayey soils, sandhills, oak-pine scrub, open pine flatwoods, roadsides; 0-100+ m; Ala., Fla., Ga., La., Miss.
Symphyotrichum adnatum
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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Symphyotrichum adnatum image
University of Florida Herbarium
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