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dogfennel

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

Phenology Flowering Aug–Oct.
Habitat Old fields, open sites, roadsides, flatwoods
Elevation 10–300 m (0–1000 ft)
Distribution
from FNA
AL; AR; CT; DE; FL; GA; KY; LA; MA; MD; MO; MS; NC; NJ; OK; PA; SC; TN; TX; VA; WV
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 466.
Parent taxa Asteraceae > tribe Eupatorieae > Eupatorium
Sibling taxa
E. album, E. altissimum, E. anomalum, E. cannabinum, E. compositifolium, E. godfreyanum, E. hyssopifolium, E. lancifolium, E. leptophyllum, E. leucolepis, E. linearifolium, E. mikanioides, E. mohrii, E. perfoliatum, E. petaloideum, E. pilosum, E. resinosum, E. rotundifolium, E. semiserratum, E. serotinum, E. sessilifolium, E. ×cordigerum, E. ×pinnatifidum
Synonyms Artemisia capillifolia
Name authority (Lamarck) Small: Mem. Torrey Bot. Club 5: 311. (1894)
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