Symphyotrichum phlogifolium

(Muhlenberg ex Willdenow) G. L. Nesom

Phytologia 77: 289. 1995.

Common names: Thin-leaf late purple aster
Endemic
Basionym: Aster phlogifolius Muhlenberg ex Willdenow Sp. Pl. 3: 2034. 1803
Synonyms: Aster patens var. phlogifolius (Muhlenberg ex Willdenow) Nees Virgulus patens var. phlogifolius (Muhlenberg ex Willdenow) Reveal & Keener
Treatment appears in FNA Volume 20. Treatment on page 490. Mentioned on page 470, 483.

Perennials, 50–130 cm, cespitose; with short, thick, woody caudices, not rhizomatous. Stems 1, erect to arching, light to dark-brown, soft-hairy, hairs ascending to spreading stipitate-glandular distally. Leaves (dark green) thin, almost membraneous; basal early deciduous, sessile or subpetiolate, blades spatulate to obovate, 80–140 × 20–30 mm, bases cuneate, margins entire to ± serrate, scabrous, apices acute; proximal cauline withering by flowering, sessile, blades panduriform, (20–) 30–70 (–110) × 10–30 (–35) mm, bases auriculate-clasping, margins entire (flat), sparsely villoso-ciliate, apices acute, faces finely sparely villous or scabrous, stipitate-glandular; distal sessile, blades (rugose-veined when fresh) ovate to lanceolate, 75–125 (–140) × 15–35 (–40) mm, bases strongly cordate-clasping to auriculate-amplexicaul, margins entire (± undulate), apices acute, acuminate to merely mucronate, faces sparsely strigose, moderately so along veins, sparsely to moderately stipitate-glandular. Heads in crowded, paniculiform arrays, branches often initially patent then ascending. Peduncles short (less than 4 cm), strigose, stipitate-glandular, bracts linear-lanceolate, ascending-appressed, grading into phyllaries. Involucres cylindric, 5.5–7.5 (–8) mm. Phyllaries in 4–6 series, linear-lanceolate, unequal, bases (tan) ± indurate in proximal 1/3–1/2, margins hyaline, erose, distally scabro-ciliolate to ciliolate, green zones covering distal 1/2, apices outer obtuse to acute, inner acuminate, purplish, faces sparsely strigillose, usually moderately to densely stipitate-glandular, rarely sparsely so. Ray-florets 9–17; corollas light to dark reddish purple, laminae 10–18 (–20) × 1–3 mm. Disc-florets 15–35; corollas white with purple lobes, 6–8 mm, lobes triangular, 1–1.5 mm. Cypselae dark-brown to black, obovoid, not compressed, 2.5–4 mm, 7–10-nerved, faces densely strigose along ribs; pappi tan to tawny, sometimes slightly purplish-tinged, 6–8 mm. 2n = 20.


Phenology: Flowering Aug–Oct.
Habitat: Loamy, sandy, or gravelly soils, rich mesic mixed-hardwood forests (Appalachians), roadsides
Elevation: 0–1100 m

Distribution

V20-1100-distribution-map.gif

Ala., Conn., Del., D.C., Ga., Ind., Ky., Md., Mass., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.

"thick" is not a number."thin" is not a number.

not tailed +, rounded +  and obtuse +
auriculate-clasping +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
distinct +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
inner +  and outer +
scabrous +  and villous +
subequal +
scarious +
10mm +  and 30mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Muhlenberg ex Willdenow) G. L. Nesom +
subpetiolate +  and sessile +
cordate-clasping to auriculate-amplexicaul +  and sessile +
cordate-clasping +  and auriculate-clasping +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
scabrous +  and villous +
acute +, panduriform +  and cuneate +
indurate +
10mm;30mm +
Aster phlogifolius +
12.5 cm125 mm <br />0.125 m <br /> (14 cm140 mm <br />0.14 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
7.5 cm75 mm <br />0.075 m <br /> (12.5 cm125 mm <br />0.125 m <br />) +
scabrous +  and villous +
ovate;lanceolate +
15mm;35mm +
rugulose +  and muricate +
ascending-appressed +
linear-lanceolate +
ascending;patent +
barbellulate +  and barbellate +
not rhizomatous +
Thin-leaf late purple aster +
not 2-lipped +  and actinomorphic +
white +, light +  and dark reddish +
at maturity , more or less ampliate , tubes usually shorter +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
dark-brown +  and black +
not compressed +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Conn. +, Del. +, D.C. +, Ga. +, Ind. +, Ky. +, Md. +, Mass. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +  and W.Va. +
0–1100 m +
auriculate-clasping +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
strigose +, stipitate-glandular +, strigillose +, scabrous +  and villous +
acute;panduriform +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Loamy, sandy, or gravelly soils, rich mesic mixed-hardwood forests (Appalachians), roadsides +
ascending +  and spreading +
stipitate-glandular +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.75 cm7.5 mm <br />0.0075 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
1.8 cm18 mm <br />0.018 m <br /> (2 cm20 mm <br />0.02 m <br />) +
10mm;18mm +
sessile +  and petiolate +
cauline +  and basal +
membraneous +
decurrent +
triangular +
entire +  and more or less serrate +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
30mm;70mm +
distally scabro-ciliolate +  and ciliolate +
acute +  and panduriform +
10mm +  and 30mm +
2-carpellate +
purplish-tinged +, tan +  and tawny +
persistent +
25 +  and 40 +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stipitate-glandular +  and strigose +
Flowering Aug–Oct. +
linear-lanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
branched +  and simple +
light +  and dark-brown +
erect +  and arching +
appendaged +  and truncate +
papillate +  and smooth +
Aster patens var. phlogifolius +  and Virgulus patens var. phlogifolius +
Symphyotrichum phlogifolium +
Symphyotrichum subg. Virgulus +
species +
at maturity , more or less ampliate , tubes usually shorter +
ampliate +
with cormoid caudices +  and rhizomatous +
stipitate-glandular +
50 cm500 mm <br />0.5 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +  and diamond--shaped +