Leaves: abaxial faces moderately to densely hairy. 2n = 32.


Phenology: Flowering Aug–Oct.
Habitat: Often shaded, usually moist, alluvial soils, alluvial stream or lake shores, floodplain deciduous forests or thickets, bogs, marshes, edges of fields, roadsides
Elevation: 10–300+ m

Distribution

V20-1153-distribution-map.gif

Ont., Que., Ala., Ill., Ind., Iowa, Kans., Ky., La., Mich., Minn., Miss., Mo., Nebr., N.Y., N.C., Okla., Pa., S.Dak., Tenn., Tex., Vt., Wis.

Discussion

A. G. Jones (1989) suggested that var. ontarionis hybridizes with Symphyotrichum lanceolatum, S. lateriflorum, and S. racemosum. Existence of such hybrids needs confirmation.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

glabrous +, glabrate +, scabrous +  and strigose +
not tailed +, rounded +  and obtuse +
petiolate +  and subpetiolate +
distinct +
10mm;40mm +
mucronulate;acute;acuminate +
subequal +
scarious +
5mm +  and 10mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and open +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Wiegand) G. L. Nesom +
spatulate;oblanceolate elliptic or ovate +
petiolate +  and subpetiolate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
cuneate +  and attenuate +
indurate +
5mm;10mm +
Aster ontarionis +  and Aster missouriensis +
sessile +, petiolate +  and subpetiolate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
elliptic-lanceolate;oblanceolate or lanceolate +
reduced +
0.2 cm2 mm <br />0.002 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
rugulose +  and muricate +
linear-lanceolate +
long-arching;ascending +
barbellulate +  and barbellate +
sessile +  and petiolate +
not 2-lipped +  and actinomorphic +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
, +, light yellow turning magenta or purple +, cream +, light purple +  and blue +
at maturity , more or less ampliate , tubes usually shorter +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
tan +  and gray +
strigillose +  and glabrous +
compressed +  and oblong-obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ont. +, Que. +, Ala. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Y. +, N.C. +, Okla. +, Pa. +, S.Dak. +, Tenn. +, Tex. +, Vt. +  and Wis. +
10–300+ m +
strigillose +, glabrous +  and pilose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Often shaded, usually moist, alluvial soils, alluvial stream or lake shores, floodplain deciduous forests or thickets, bogs, marshes, edges of fields, 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 +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
3.5mm;5.5mm +
2 (?) +  and 5 (?) +
0.5mm;1.5mm +
sessile +  and petiolate +
cauline +  and basal +
decurrent +
slightly spreading;reflexed +
lanceolate +
petiolate +  and subpetiolate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
ciliate +  and scabrous +
acute +  and rounded +
entire to serrulate +  and serrate to crenate-serrate +
5mm +  and 10mm +
2-carpellate +
whitish +  and white +
persistent +
25 +  and 40 +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
2-10(-20) mm +  and subsessile +
Flowering Aug–Oct. +
spreading +  and appressed +
linear-obovate +  and oblong-lanceolate +
8 cm80 mm <br />0.08 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 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 +
branched +  and simple +
2 (?) +  and 3 (?) +
ascending +  and erect +
glabrous +, hirsute +, villous +  and glabrate +
appendaged +  and truncate +
papillate +  and smooth +
Aster sect. Heterastrum +  and Aster subg. Symphyotrichum +
Symphyotrichum ontarionis var. ontarionis +
Symphyotrichum ontarionis +
variety +
funnelform-campanulate +  and cylindric +
ampliate +
20 cm200 mm <br />0.2 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
tree +, shrub +  and subshrub +
lanceolate +