Conoclinium betonicifolium

(Miller) R. M. King & H. Robinson

Phytologia 19: 300. 1970.

Common names: Betony-leaf mistflower
Basionym: Eupatorium betonicifolium Miller Gard. Dict. ed. 8, Eupatorium no. 9. 1768
Treatment appears in FNA Volume 21. Treatment on page 479.

Stems decumbent or procumbent (rooting at nodes). Leaf blades usually oblong to oblong-lanceolate or oblanceolate to ovate, sometimes triangular, 2.5–5(–11) cm, bases cordate, obtuse, or truncate (often subauriculate), margins usually crenate to dentate, rarely entire, apices rounded to obtuse. Phyllaries ca. 4 mm. Corollas blue to purple, 2.5–3 mm. Cypselae 1.2–1.8 mm, glabrous; pappi: bristle tips dilated.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaf blades mostly oblong to oblong-lanceolate, bases cordate to truncate (often subauriculate), margins crenate; coastal habitats Conoclinium betonicifolium var. betonicifolium
1 Leaf blades mostly oblanceolate to ovate, bases cordate, obtuse, or truncate, margins crenate or entire; inland habitats along streams and around lakes Conoclinium betonicifolium var. integrifolium