Flora of Scotts Creek Watershed
Adenocaulon bicolor - American Trailplant
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Family Name: Asteraceae
Common Names: American Trailplant, Trail Plant, Pathfinder
Origin: Native to California
Habitat: Moist, shaded woods and forests, often along roadsides and deer trails. Below 2000 m.
Life Form and Duration: Perennial Herb, 30-100 cm
Comments on overall growth: Grows +/- erect with a single slender stem, fibrous roots, openly branched, large alternate leaves near base, lower portion of plant tomentose, upper portion stalked glandular.
Foliage Description: Leaves attached at base of stem, triangular-ovate to heart shaped, shallowly lobed, dark green glabrous above, white woolly beneath, blades 3-25 cm long. Lower leaves long petioled (stalked) and larger, leaf stalks equal to or longer in length than the blade.
Infloresence Description: Heads are small, disciform, in a slender, branched 40-60 cm long panicle. Few flowers per head, 3-7 pistillate and 3-10 staminate disk flowers.
Flower Description: Flowers whitish, corollas 0.5-2 mm long.
Flowering Season: May-September
Fruit Type: Achenes
Fruit Description: Club shaped, 5-8 mm, blackish green, with stalked glands.
Common Associates: Pseudostuga menziesii, Sequoia sempervirens, Lithocarpus densiflorus, Umbellularia californica
Other Comments: "Called Trailplant or Pathfinder because when the leaves are disturbed by someone walking past, the white undersides are highly visible."