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Eurybia macrophylla (Linnaeus) Cassini. Subgenus: Eurybia. Section: Eurybia. Big-leaved Aster. Phen: Late Jul-Sep. Hab: Moist to dryish forests, in NC mostly at moderate to high elevations, particularly in red oak forests on ridgetops. Dist: NB and QC west to MN, south to PA, MD, VA, NC, nw. SC, ne. GA, e. TN, and IN; disjunct in scattered sites in MO and nw. AR. Known in SC from at least Greenville County (S. Tessel, pers. comm., 2023).

Origin/Endemic status: Native

Taxonomy Comments: Aster macrophyllus var. ianthinus [= Aster multiformis] is sometimes recognized. It is alleged to differ in having the stipitate glands of the pedicels with minute heads (vs. broadly capitate), the leaves thin in texture and only slightly scabrous (vs. thick in texture and strongly scabrous). Refer to Fernald (1950) for descriptions of other recognized varieties and an associated key. Eurybia macrophylla is octoploid (2n=72).

Synonymy ⓘ: = Ar, FNA20, Il, K1, K3, K4, Mi, NE, NY, Pa, Tn, Va, Nesom (1994b); = Aster macrophyllus L. – C, G, Oh3, RAB, SE1, Tat, W, Lamboy (1987); > Aster macrophyllus L. – S; > Aster macrophyllus L. var. apricensis E.S.Burgess – F; > Aster macrophyllus L. var. excelsior E.S.Burgess – F, WV; > Aster macrophyllus L. var. ianthinus (E.S.Burgess) Fernald – F, WV; > Aster macrophyllus L. var. macrophyllus – F, WV; > Aster macrophyllus L. var. pinguifolius E.S.Burgess – F; > Aster macrophyllus L. var. pinquifolius E.S.Burgess – WV, misspelling; > Aster macrophyllus L. var. sejunctus E.S.Burgess – F; > Aster macrophyllus L. var. velutinus E.S.Burgess – F, WV; > Aster multiformis E.S.Burgess – S; > Aster riciniatus E.S.Burgess – S

Links to other floras: = Eurybia macrophylla - FNA20

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: UPL
  • Eastern Mountains and Piedmont: UPL
  • Great Plains: FACU
  • Midwest: FACU
  • Northcentral & Northeast: UPL

Heliophily ⓘ: 4

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image of plant© Erik Danielson source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect, rhizomatous, colony-forming perennial of moist to dryish forests, in southern parts of the region mostly at moderate to high elevations, particularly in red oak forests on ridge tops.

Stems: Stems unbranched or sparingly branched, sometimes red-tinged, rough-hairy or smooth.

Leaves: Leaves basal and alternate on the stem, on winged petioles (stem leaves sessile), oval with heart-shaped base, to 12 in. long (stem leaves much reduced), toothed, rough above and smooth or hairy beneath; basal leaves wither by flowering.

Inforescence:

Flowers: Composite flowers (heads) in branched, terminal clusters; heads about 1 1/4 in. wide, consisting of 9-20 pale violet to white, long, narrow ray florets encircling a center disk of pale yellow (turning dark red with age), tubular florets.

Fruits:

Comments:

Height: 1-3 1/2 ft.

plant sale text: Large-leaf wood-aster has large heart-shaped, rough foliage. It forms a dense spreading ground cover in rich woodlands. This aster provides fall interest as it produces a spike, punctuated by light violet, pale blue flowers. This plant is a great addition to a woodland garden or shady spot in the landscape. It is an outstanding substitute for many non-native shade-loving ground covers, such as english ivy, periwinkle, pachysandra, etc. Large-leaf wood-aster is also a larval host and nectar plant for the pearl crescent butterfly (Phycoides tharos).

bloom table text:

description: Erect, rhizomatous, colony-forming perennial of moist to dryish forests, in southern parts of the region mostly at moderate to high elevations, particularly in red oak forests on ridge tops.

stems: Stems unbranched or sparingly branched, sometimes red-tinged, rough-hairy or smooth.

leaves: Leaves basal and alternate on the stem, on winged petioles (stem leaves sessile), oval with heart-shaped base, to 12 in. long (stem leaves much reduced), toothed, rough above and smooth or hairy beneath; basal leaves wither by flowering.

inflorescence:

flowers: Composite flowers (heads) in branched, terminal clusters; heads about 1 1/4 in. wide, consisting of 9-20 pale violet to white, long, narrow ray florets encircling a center disk of pale yellow (turning dark red with age), tubular florets.

fruits:

comments:

cultural notes:

germination code:

native range: northeastern North America