Eutrochium maculatum (L.) E.E. Lamont var. maculatum
Joe-pye-weed
Asteraceae (Aster family)
Introduction to Vascular Plants
Joe-pye-weed
Asteraceae (Aster family)
Introduction to Vascular Plants
Map
Distribution of Eutrochium maculatum var. maculatum
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Introduction
This eastern variety of the very rare native Joe-Pye weed, is often grown in gardens. Collected on Herrling Island, Fraser Valley, where it arose from garden dumpings (Lomer 6195 @ UBC).
Note Author: Frank Lomer, Honourary Research Associate, UBC Herbarium |
Species Information
General:
Perennial herb from a fibrous root; stems solitary, stout, branched in the inflorescence, 60-200 cm tall.
Leaves:
Stem leaves opposite or whorled, mostly in 3's or 4's, lanceolate to lance-elliptic, narrowing abruptly to the stalk, 6-20 cm long and 2-7 cm wide, sharply saw-toothed, lower surfaces covered with spreading, curly hairs.
Flowers:
Heads discoid, clustered in somewhat flat-topped clusters, rarely solitary; involucres 6.5-9 mm tall; involucral bracts graduated, often purplish; disk flowers purple, 9-22, tubular and perfect.
Fruits:
Achenes 5-angled, glandular; pappus of numerous hairlike bristles.
Habitat and Range
Wet to moist swamp or pond margins and forest openings in the lowland zone; rare in the lower Fraser Valley; E to NF and S to UT and NM, probably introduced.Status Information
| Scientific Name | Origin Status | Provincial Status | BC List (Red Blue List) | COSEWIC |
|---|---|---|---|---|
| Eutrochium maculatum var. bruneri | Native | SU | Unknown | Not Listed |
| Eutrochium maculatum var. maculatum | Unlisted | Non-established | Not Listed |
BC Ministry of Environment: BC Species and Ecosystems Explorer.