Symphyotrichum grandiflorum

(Linnaeus) G. L. Nesom

Phytologia 77: 283. 1995.

Common names: Large-flowered aster
Endemic
Basionym: Aster grandiflorus Linnaeus Sp. Pl. 2: 877. 1753
Synonyms: Virgulus grandiflorus (Linnaeus) Reveal & Keener
Treatment appears in FNA Volume 20. Treatment on page 484. Mentioned on page 470, 483.

Perennials, 50–100 cm, colonial; woody rhizomatous. Stems 1–5+, erect (stout, brown), proximally ± hispid, distally sparsely strigose, distally stipitate-glandular. Leaves stiff (dark green), greatly reduced distally, margins entire, scabrous; basal early deciduous, sessile, blades (3-nerved) oblanceolate, 40–80 × 4–12 mm, bases attenuate, apices obtuse to acute, faces sparsely scabrous; proximal cauline usually withered by flowering, sessile, blades oblanceolate to lanceolate-oblong, 20–60 × 5–20 mm, bases cordate-clasping, apices acute, mucronulate, faces glabrate to sparsely scabrous, stipitate-glandular; distal sessile, blades lanceolate to oblong, 20–40 × 5–8 mm, bases cuneate, apices acute, mucronulate to white-spinulose, faces glabrous or scabrous, sparsely stipitate-glandular. Heads in racemiform to paniculiform arrays, branches patent or ascending with 1–5+ heads. Peduncles 3–5 cm, short-strigose, stipitate-glandular, bracts spreading to reflexed, lanceolate-oblong, 5–10 mm, little reduced distally, grading into phyllaries. Involucres campanulate, 8.5–12 mm. Phyllaries in 3–4 series, spatulate-oblanceolate, unequal, bases ± indurate, margins scarious, green zones covering distal portion, apices spreading to strongly reflexed, faces sparsely scabrous, moderately stipitate-glandular. Ray-florets 14–35; corollas light to reddish purple, laminae 11–15 (–20) × 1.5–2.5 mm. Disc-florets 25–35; corollas yellow becoming reddish purple, 5.5–8 mm, lobes narrowly triangular, 0.7–1 mm. Cypselae light-brown, cylindric to narrowly obovoid, ± compressed, 3–4.5 mm, 7–10-nerved (brown), faces moderately strigose; pappi tan, 5.5–6 mm. 2n = 30, 60.


Phenology: Flowering (Sep–)Oct(–Nov).
Habitat: Sandy soils, sand hills, roadsides, edges of deciduous woods and thickets
Elevation: 0–200+ m

Discussion

Selected References

None.

Lower Taxa

None.
not tailed +, rounded +  and obtuse +
distinct +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
spreading +  and strongly reflexed +
glabrate +  and sparsely scabrous +
subequal +
scarious +
5mm +  and 20mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
racemiform +  and paniculiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Linnaeus) G. L. Nesom +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
glabrate +  and sparsely scabrous +
cuneate +, mucronulate +, acute +, oblanceolate +  and lanceolate-oblong +
indurate +
5mm;20mm +
Aster grandiflorus +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
glabrate +  and sparsely scabrous +
lanceolate;oblong +
5mm;8mm +
rugulose +  and muricate +
spreading +  and reflexed +
lanceolate-oblong +
reduced +
ascending;patent +
barbellulate +  and barbellate +
Large-flowered aster +
not 2-lipped +  and actinomorphic +
yellow becoming reddish purple +, light +  and reddish purple +
at maturity , more or less ampliate , tubes usually shorter +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, cylindric +  and narrowly obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
N.C. +, S.C. +  and Va. +
0–200+ m +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
strigose +, stipitate-glandular +, scabrous +, glabrous +, glabrate +  and sparsely scabrous +
mucronulate;acute;oblanceolate;lanceolate-oblong +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy soils, sand hills, roadsides, edges of deciduous woods and thickets +
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 +
0.85 cm8.5 mm <br />0.0085 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
11mm;15mm +
1.5mm;2.5mm +
sessile +  and petiolate +
cauline +  and basal +
reduced +
decurrent +
triangular +
not +  and hyaline +
ciliate +  and scabrous +
entire +, crenate +  and serrate +
2-carpellate +
persistent +
25 +  and 40 +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
stipitate-glandular +  and short-strigose +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering (Sep–)Oct(–Nov). +
spatulate-oblanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
branched +  and simple +
1 +  and 5 +
appendaged +  and truncate +
papillate +  and smooth +
Virgulus grandiflorus +
Symphyotrichum grandiflorum +
Symphyotrichum subg. Virgulus +
species +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
stipitate-glandular +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +  and diamond--shaped +