Eupatorium capillifolium |
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dogfennel |
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Habit | Perennials, 50–200 cm. |
Stems | (from short caudices) multiple, branched distally, puberulent throughout. |
Leaves | opposite (proximal) or alternate (nodes often appearing leafy because of development of leaves on lateral buds without axis elongation); sessile; blades (often ternately lobed) or lobes linear, 5–100 × 0.2–0.5(–1) mm, bases ± cuneate, margins entire (strongly revolute), apices rounded to acute, faces glabrate, gland-dotted. |
Florets | 5; corollas 2–2.5 mm. |
Phyllaries | 8–10 in 2–3 series, oblong, 0.5–2.5 × 0.2–0.5 mm, apices acuminate and mucronate, abaxial faces glabrous or glabrate, not or little, if at all, gland-dotted. |
Heads | in dense, paniculiform arrays. |
Cypselae | 1–1.7 mm; pappi of 20–30 bristles 2–2.5 mm. |
2n | = 20. |
Eupatorium capillifolium |
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Phenology | Flowering Aug–Oct. |
Habitat | Old fields, open sites, roadsides, flatwoods |
Elevation | 10–300 m (0–1000 ft) |
Distribution |
AL; AR; CT; DE; FL; GA; KY; LA; MA; MD; MO; MS; NC; NJ; OK; PA; SC; TN; TX; VA; WV
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Source | FNA vol. 21, p. 466. |
Parent taxa | Asteraceae > tribe Eupatorieae > Eupatorium |
Sibling taxa | |
Synonyms | Artemisia capillifolia |
Name authority | (Lamarck) Small: Mem. Torrey Bot. Club 5: 311. (1894) |
Web links |