2024 Edition • Donate • Get the App • Cite this Page
X

Colors

Data mode

Account

Login
Sign up

Support FSUS...

We've finished our 2024 fundraiser. Many thanks to those who have given! It's not too late to support us (click here)...

Copy permalink to share

Eupatorium rotundifolium Linnaeus. Common Roundleaf Eupatorium. Phen: Aug-Oct. Hab: Pine savannas, seepage bogs, moist to dry woodlands, roadsides. Dist: MA, NY, IN, and OK south to s. FL and TX.

Origin/Endemic status: Native

Synonymy ⓘ: = F, NE, NY, S, Tat, Tn, Va; = Eupatorium rotundifolium L. var. rotundifolium – Ar, C, FNA21, G, K1, K3, K4, Oh3, Pa, RAB, SE1, W, Cronquist (1985); < Eupatorium rotundifolium L. – Fl7, GW2, Tx, WH3; < Eupatorium rotundifolium L. ssp. rotundifolium – Montgomery & Fairbrothers (1970)

Links to other floras: = Eupatorium rotundifolium var. rotundifolium - FNA21

Show in key(s)

Show parent genus

Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: FAC (taxonomic split from wetland indicator species)
  • Great Plains: FAC (taxonomic split from wetland indicator species)
  • Midwest: FAC (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FAC (taxonomic split from wetland indicator species)

Heliophily ⓘ: 8

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Keith Bradley | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Jay Horn source | Original Image ⭷
image of plant© Keith Bradley | Original Image ⭷
image of plant© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image of plant© Scott Ward; E. rotundifolium (left), E. pilosum (right) | Original Image ⭷

Feedback

See something wrong or missing on about Eupatorium rotundifolium? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.


Horticultural Information

NCBG trait

Intro: Erect perennial of savannas, seepage bogs, woodlands, interdune swales, old fields and roadsides.

Stems: Stems 1-2 from a short crown, sparsely branched above and densely hairy, especially above.

Leaves: Leaves mostly opposite, sessile, oval to triangular with somewhat rounded tip and nearly flat base, 1-1 1/2 times long as wide, with the principal pair of lateral veins diverging directly from the base of the midrib, round-toothed, rough-hairy above and gland-dotted and veiny beneath.

Inforescence:

Flowers: Small composite flowers (heads) arranged in clusters at branch tips, the branches and stalks hairy and glandular; heads about 1/4 in. wide and consisting of 5 white, tubular disk florets. 2 or 3 series of tiny, pointed bracts surround the base of each head.

Fruits:

Comments:

Height: 3-4 1/2 ft.

plant sale text: With interesting ovate to heart-shaped leaves that hug the stem in pairs and a showy flat-topped clump of white flowers, Roundleaf thoroughwort is a worthy addition to the garden. Found throughout the state of North Carolina, it is easy to establish and more compact than other species of Eupatorium such as boneset. Fluffy seeds provide winter interest for this mid-sized Eupatorium.

bloom table text:

description: Erect perennial of savannas, seepage bogs, woodlands, interdune swales, old fields and roadsides.

stems: Stems 1-2 from a short crown, sparsely branched above and densely hairy, especially above.

leaves: Leaves mostly opposite, sessile, oval to triangular with somewhat rounded tip and nearly flat base, 1-1 1/2 times long as wide, with the principal pair of lateral veins diverging directly from the base of the midrib, round-toothed, rough-hairy above and gland-dotted and veiny beneath.

inflorescence:

flowers: Small composite flowers (heads) arranged in clusters at branch tips, the branches and stalks hairy and glandular; heads about 1/4 in. wide and consisting of 5 white, tubular disk florets. 2 or 3 series of tiny, pointed bracts surround the base of each head.

fruits:

comments:

cultural notes:

germination code: 2

native range: eastern North America