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American trailplant, pathfinder, trail plant

Aerial stems

usually leafy only near bases, openly branched.

Leaves

petioles winged;

blades 3–nerved, 3–25 cm.

Phyllaries

5–6(–10), 1–2 mm.

Cypselae

5–9 mm.

Peripheral

florets: corollas soon falling, 0.5–1.2 mm.

Inner

florets: corollas tardily falling, 1–2.3 mm.

2n

= 46.

Adenocaulon bicolor

Phenology Flowering Jun–Oct.
Habitat Woods, forests, usually in shade
Elevation 0–2000 m (0–6600 ft)
Distribution
from FNA
CA; ID; MI; MN; MT; OR; SD; WA; WI; WY; AB; BC; ON
[WildflowerSearch map]
[BONAP county map]
Discussion

Adenocaulon bicolor is a common forest herb from southwestern Canada to central California. It is disjunct in the Black Hills (eastern Wyoming, western South Dakota) and the Great Lakes region (southern Ontario, northern Michigan). Reports of the species from Minnesota and Wisconsin are unverified.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 78.
Parent taxa Asteraceae > tribe Mutisieae > Adenocaulon
Name authority Hooker: Bot. Misc. 1: 19, plate 15. (1829)
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