Symphyotrichum lanceolatum var. latifolium

(Semple & Chmielewski) G. L. Nesom

Phytologia 77: 285. 1995.

Basionym: Aster lanceolatus var. latifolius Semple & Chmielewski
Treatment appears in FNA Volume 20. Treatment on page 521. Mentioned on page 520.
Revision as of 00:29, 27 July 2019 by FNA>Volume Importer
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Stems stout to slender, glabrous or hairy in lines. Leaf blades broadly oblanceolate (not much reduced in arrays), margins usually serrate. Heads 3–10+ per branch, if many, not congested on lateral branches, not subtended by foliaceous bracts. Involucres 3.9–5.5 mm. Phyllaries: outer 1.9–3.5 × 0.4–0.6 mm, inner 3–4.9 × 0.4–0.6 mm, outer 1/3–2/3 length of inner. Ray florets 16–33; corollas white, laminae 4.1–8.6 mm. Disc florets 13–29; corollas 3.2–5.7 mm, limbs 1.9–3.2 mm, lobes 0.4–1.1 mm. Cypselae 0.8–1.8 mm; pappi 3.1–5.3 mm. 2n = 64.


Phenology: Flowering Jul–Oct.
Habitat: Full sun to partial shade, thickets, edges of wet deciduous woods, margins of streams, ditches
Elevation: 0–800+ m

Distribution

V20-1159-distribution-map.gif

Man., Ont., Ala., Ark., Conn., D.C., Fla., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.C., N.Dak., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

Variety latifolium is generally more southern than var. lanceolatum. It is present in the southern Atlantic and Gulf coastal plain states where the latter is absent. In the southern states it is present inland and not on the coastal plains. The report of this variety for southern Quebec remains to be confirmed.

Selected References

None.

Lower Taxa

None.
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Semple & Chmielewski) G. L. Nesom +
Aster lanceolatus var. latifolius +
Man. +, Ont. +, Ala. +, Ark. +, Conn. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–800+ m +
Full sun to partial shade, thickets, edges of wet deciduous woods, margins of streams, ditches +
Flowering Jul–Oct. +
Illustrated +
Aster sect. Heterastrum +  and Aster subg. Symphyotrichum +
Symphyotrichum lanceolatum var. latifolium +
Symphyotrichum lanceolatum +
variety +