IllustratedEndemic
Synonyms: Aster bellidiflorus Willdenow Aster eminens Willdenow Aster lanceolatus subsp. simplex (Willdenow) A. G. Jones Aster laxifolius var. laetifolius Lunell Aster laxus Willdenow Aster paniculatus var. polychrous (Torrey & A. Gray) A. Cronquist Aster simplex Willdenow Aster simplex var. ramosissimus (Willdenow) Torrey & A. Gray Aster stenophyllus Linnaeus Aster tenuifolius var. bellidifolius Torrey & A. Gray Aster tenuifolius var. ramosissimus Symphyotrichum simplex
Treatment appears in FNA Volume 20. Treatment on page 521. Mentioned on page 519, 520.

Stems stout to slender, glabrous or hairy in lines. Leaf-blades linear to lanceolate or oblanceolate (reduced in arrays), margins entire. Heads 1–20+ per branch, sometimes congested distally on lateral branches, not subtended by foliaceous bracts. Involucres 3.6–4.8 mm. Phyllaries: outer 1.7–4 × 0.3–0.7 mm, inner 3–5.1 × 0.3–0.7 mm, outer 1/3–2/3 length of inner. Ray-florets 17–47; corollas white to purplish or bluish, laminae 3.2–8 mm. Disc-florets 16–38; corollas 2.9–5.2 mm, limbs 1.6–2.7 mm, lobes 0.6–1.6 mm. Cypselae 0.5–1.6 mm; pappi 2.7–5.2 mm. 2n = 32, 40, 48, 56, 64.


Phenology: Flowering Jul–Oct.
Habitat: Full sun to partial shade, margins of streams, edges of thickets, meadows, fields, ditches
Elevation: 0–900+ m

Distribution

V20-1160-distribution-map.gif

Alta., Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Ark., Conn., D.C., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Dak., Ohio, Okla., Pa., R.I., S.Dak., Tex., Vt., Va., W.Va., Wis., in Europe

Discussion

Variety lanceolatum is the northernmost variety, reaching the southern boreal region from Alberta to central Quebec and the island of Newfoundland. It is most variable morphologically and cytologically. The variety (and probably the others as well) is reported to hybridize with Symphyotrichum boreale, S. laeve, S. lateriflore, S. racemosum (documented by J. C. Semple and R. A. Brammall 1982), and S. puniceum (A. G. Jones 1989). Some of those hybrids need confirmation.

Symphyotrichum ×salignum (Willdenow) G. L. Nesom is of garden origin and is widely naturalized in central and northern Europe. It is the hybrid between S. lanceolatum var. lanceolatum and S. novi-belgii var. novi-belgii, and it may occur along the Atlantic seashore where the ranges of those two taxa overlap.

Selected References

None.

Lower Taxa

None.

"/3lengthofinnerphyllaries" is not declared as a valid unit of measurement for this property."thin" is not a number.

64 +, 56 +, 48 +, 40 +  and 32 +
scabrous +  and glabrous +
not tailed +, rounded +  and obtuse +
petiolate +  and subpetiolate +
distinct +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
subequal +
scarious +
5mm +  and 20mm +
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† +
(Willdenow) G. L. Nesom +
cuneate +  and decurrent +
indurate +
Aster lanceolatus +
subsessile +, sessile +, petiolate +  and subpetiolate +
10 cm100 mm <br />0.1 m <br /> (14 cm140 mm <br />0.14 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
oblanceolate;linear +
reduced +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
10mm;20mm +
rugulose +  and muricate +
linear-oblanceolate +  and lanceolate +
barbellulate +  and barbellate +
sessile +  and petiolate +
not 2-lipped +  and actinomorphic +
white +  and purplish or bluish +
at maturity , more or less ampliate , tubes usually shorter +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
tan +  and gray +
strigillose +  and glabrous +
compressed +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ark. +, Conn. +, D.C. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.Dak. +, Tex. +, Vt. +, Va. +, W.Va. +, Wis. +  and in Europe +
0–900+ m +
strigillose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Full sun to partial shade, margins of streams, edges of thickets, meadows, fields, ditches +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate;cylindric +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
2 (?) +  and 5 (?) +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5mm;1.3mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
triangular +
petiolate +  and subpetiolate +
10mm;80mm +
acute +  and obtuse or rounded +
5mm +  and 20mm +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
2-carpellate +
white +  and sordid or tawny +
persistent +
25 +  and 40 +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Jul–Oct. +
spreading +  and appressed +
dilated +, linear-lanceolate +  and linear +
less strongly unequal +  and subequal +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
Illustrated +  and Endemic +
branched +  and simple +
stout +  and slender +
appendaged +  and truncate +
papillate +  and smooth +
Aster bellidiflorus +, Aster eminens +, Aster lanceolatus subsp. simplex +, Aster laxifolius var. laetifolius +, Aster laxus +, Aster paniculatus var. polychrous +, Aster simplex +, Aster simplex var. ramosissimus +, Aster stenophyllus +, Aster tenuifolius var. bellidifolius +, Aster tenuifolius var. ramosissimus +  and Symphyotrichum simplex +
Symphyotrichum lanceolatum var. lanceolatum +
Symphyotrichum lanceolatum +
variety +
funnelform-campanulate +  and cylindric +
ampliate +
150 cm1,500 mm <br />1.5 m <br /> (200 cm2,000 mm <br />2 m <br />) +
30 cm300 mm <br />0.3 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +  and linear-lanceolate +