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Symphyotrichum adnatum
(Nutt.) Nesom
(redirected from:
Aster adnatus
Nutt.)
Family:
Asteraceae
Scale-Leaf American-Aster,
more...
scaleleaf aster
[
Aster adnatus
Nutt.]
lulurod26
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.
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