Symphyotrichum adnatum

(Nuttall) G. L. Nesom

Phytologia 77: 275. 1995.

Common names: Scaleleaf aster
IllustratedEndemic
Basionym: Aster adnatus Nuttall J. Acad. Nat. Sci. Philadelphia 7: 82. 1834
Synonyms: Lasallea adnata (Nuttall) Semple & Brouillet Virgulus adnatus (Nuttall) Reveal & Keener
Treatment appears in FNA Volume 20. Treatment on page 491. Mentioned on page 470, 483.

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.


Phenology: Flowering Oct–Dec.
Habitat: Sandy, clayey soils, sandhills, oak-pine scrub, open pine flatwoods, roadsides
Elevation: 0–100+ m

Distribution

V20-1102-distribution-map.gif

Ala., Fla., Ga., La., Miss.

Discussion

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Symphyotrichum adnatum"
not tailed +, rounded +  and obtuse +
distinct +
scabrellous-puberulent +
acute;acute;obtuse +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Nuttall) G. L. Nesom +
subpetiolate +  and sessile +
linear-oblanceolate;obovate;oblanceolate +
subclasping +
auriculate-clasping +
cuneate +
indurate +
Aster adnatus +
3-nerved +, subpetiolate +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
lanceolate;linear +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rugulose +  and muricate +
short-strigose +
ascending;patent +
barbellulate +  and barbellate +
Scaleleaf aster +
not 2-lipped +  and actinomorphic +
yellow +, light +  and dark lavender +
at maturity , more or less ampliate , tubes usually shorter +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
tan +  and brown +
not compressed +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Fla. +, Ga. +, La. +  and Miss. +
0–100+ m +
strigose +, scabrellous-puberulent +  and stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy, clayey soils, sandhills, oak-pine scrub, open pine flatwoods, roadsides +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
2.4 cm24 mm <br />0.024 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.5mm;1.5mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
triangular +
ciliate +  and scabrous +
entire +, crenate +  and serrate +
2-carpellate +
persistent +
25 +  and 40 +
0.375 cm3.75 mm <br />0.00375 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
short-strigose +
Flowering Oct–Dec. +
oblong +  and oblanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
Illustrated +  and Endemic +
branched +  and simple +
erect +  and scandent-sprawling +
appendaged +  and truncate +
papillate +  and smooth +
Lasallea adnata +  and Virgulus adnatus +
Symphyotrichum adnatum +
Symphyotrichum subg. Virgulus +
species +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
with cormoid caudices +  and rhizomatous +
stipitate-glandular +
30 cm300 mm <br />0.3 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
tree +, shrub +  and subshrub +
subspinulose +
stipitate-glandular +
mucronate +, obtuse +  and lenticular +