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Symphyotrichum adnatum
(Nutt.) G.L. Nesom
Family:
Asteraceae
Scale-Leaf American-Aster
FNA
Resources
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.
2
n
= 20.
Flowering Oct-Dec. Sandy, clayey soils, sandhills, oak-pine scrub, open pine flatwoods, roadsides; 0-100+ m; Ala., Fla., Ga., La., Miss.
Open Interactive Map
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
University of Florida Herbarium
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].
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