Endemic
Synonyms: Aster calderi B. Boivin Aster puniceus var. calderi Fernald Aster puniceus var. compactus Fernald Aster puniceus var. oligocephalus Fernald Aster puniceus var. perlongus (B. Boivin) G. L. Nesom Symphyotrichum puniceum var. calderi
Treatment appears in FNA Volume 20. Treatment on page 525. Mentioned on page 523.

Plants 7–200+ cm. Stems usually sparsely to ± densely hirsute, often glabrescent, sometimes glabrate proximally, sometimes entirely so (hirsute in lines in arrays). Leaves: abaxial faces paler than adaxial, with a dark, distinct reticulum, adaxial without impressed main veins; array leaves usually equal to mid cauline. 2n = 16, 32.


Phenology: Flowering Aug–Oct.
Habitat: Wet soils, often peaty, open to moderately shaded, margins of alluvial deciduous woods and alder thickets, swamp margins, edges of bogs, stream and lake shores, marshes, wet meadows, early-melting coastal or riparian snowbeds with boreal forbs (northern alpine and subarctic regions), roadside and drainage ditches
Elevation: 0–2000 m

Distribution

V20-1167-distribution-map.gif

St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Sask., Ala., Conn., Del., Ga., Ill., Ind., Iowa, Maine, Md., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Pa., R.I., S.C., S.Dak., Tenn., Vt., Va., W.Va., Wis., introduced in Europe.

Discussion

The following forms that pertain to var. puniceum are not recognized here: Aster puniceus forma blandus (Pursh) Lepage, forma candidus Fernald, forma colbyi Shinners, forma demissus (Lindley) Fernald, forma etiamalbus Venard, and forma rufescens Fassett. Variety calderi is a dwarf morphotype at the northern limit of the range that does not deserve taxonomic recognition. Hybrids of var. puniceum with the following species have been reported: Symphyotrichum lanceolatum (probably A. tardiflorus Linnaeus var. lancifolius Fernald), S. lateriflorum, S. urophyllum, and S. cordifolium.

Selected References

None.

Lower Taxa

None.
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Linnaeus) Á. Löve & D. Löve +
Aster puniceus +
St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Conn. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Vt. +, Va. +, W.Va. +, Wis. +  and introduced in Europe. +
0–2000 m +
Wet soils, often peaty, open to moderatelyWet soils, often peaty, open to moderately shaded, margins of alluvial deciduous woods and alder thickets, swamp margins, edges of bogs, stream and lake shores, marshes, wet meadows, early-melting coastal or riparian snowbeds with boreal forbs (northern alpine and subarctic regions), roadside and drainage ditchesic regions), roadside and drainage ditches +
Flowering Aug–Oct. +
Aster calderi +, Aster puniceus var. calderi +, Aster puniceus var. compactus +, Aster puniceus var. oligocephalus +, Aster puniceus var. perlongus +  and Symphyotrichum puniceum var. calderi +
Symphyotrichum puniceum var. puniceum +
Symphyotrichum puniceum +
variety +