Eupatorium semiserratum A.P. de Candolle. Phenology: Late Jul-Oct. Habitat: Swamp forests, seepage bogs, savannas, clay-based Carolina bays, other wetlands. Distribution: Se. VA south to ne. FL, Panhandle FL, west to TX and AR; disjunct in sc. TN.
ID notes: This species often has 3 leaves per node; most similar species rarely or never have whorled leaves.
Origin/Endemic status: Endemic
Synonymy ⓘ: = Ar, C, Fl7, FNA21, G, GW2, K4, RAB, S, SE1, Tn, Va, WH3; = Eupatorium cuneifolium Willd. var. semiserratum (DC.) Fernald & Griscom — F; < Eupatorium glaucescens Elliott — Tx. Basionym: Eupatorium semiserratum DC. 1836
Links to other floras: = Eupatorium semiserratum - FNA21
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW
- Eastern Mountains and Piedmont: FACW
- Great Plains: FAC
- Midwest: FACW
Heliophily ⓘ: 7
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Horticultural Information
Intro: Erect perennial of swamp forests, seepage bogs, savannas, clay-based Carolina bays and other wetlands.
Stems: Stems usually solitary and branched only in the inflorescence, densely hairy and sometimes glandular.
Leaves: Leaves in whorls of 3 (rarely 4 or opposite), elliptic to oblong-lance-shaped, with 3 primary veins, toothed, minutely hairy.
Inforescence:
Flowers: Composite flowers (heads) arranged in omewhat round-topped clusters at tips of inflorescence branches; heads white, about 1/4 in. long and consisting of several tiny, tubular disk florets surrounded by several series of tiny bracts.
Fruits:
Comments:
Height: 1 1/2-5 ft.
plant sale text:
bloom table text:
description: Erect perennial of swamp forests, seepage bogs, savannas, clay-based Carolina bays and other wetlands.
stems: Stems usually solitary and branched only in the inflorescence, densely hairy and sometimes glandular.
leaves: Leaves in whorls of 3 (rarely 4 or opposite), elliptic to oblong-lance-shaped, with 3 primary veins, toothed, minutely hairy.
inflorescence:
flowers: Composite flowers (heads) arranged in omewhat round-topped clusters at tips of inflorescence branches; heads white, about 1/4 in. long and consisting of several tiny, tubular disk florets surrounded by several series of tiny bracts.
fruits:
comments:
cultural notes:
germination code:
native range:
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