Page authors: Don Knoke, David Giblin
Apocynum ×floribundum
western dogbane
Specimens
Photos

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east across North America to the Atlantic Coast.

Habitat: Dry, open areas, gen in valleys and at lower elevations in the mountains.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bumblebees, bees, flies, butterflies, beetles, wasps

Description:
General:

Perennial herbs with milky juice, the branched stems 2-6 dm. tall, glabrous or pubescent.

Leaves:

Leaves opposite, entire, spreading, sub-sessile to petiolate, ovate-lanceolate to ovate, obtuse to acute at the tip and rounded to cordate at the base, 4-8 cm. long.

Flowers:

Inflorescence of terminal and axillary cymes; calyx divided nearly to the base, the 5 lobes lanceolate, about as long as the corolla tube; corolla 4.5-6 mm. long, bell-shaped, pinkish, the 5 lobes spreading; there are triangular, awl-shaped appendages alternate with the bases of the 5 stamens in the corolla tube; style very short, enlarged; ovary superior.

Fruits:

Follicles 2, elongate, 7-14 cm. long, pendulous.

Accepted Name:
Apocynum ×floribundum Greene
Publication: Erythea 1(7): 151. 1893.

Synonyms & Misapplications:
Apocynum medium Greene [HC, KZ99]
Additional Resources:

PNW Herbaria: Specimen records of Apocynum ×floribundum in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Apocynum ×floribundum checklist entry

OregonFlora: Apocynum ×floribundum information

E-Flora BC: Apocynum ×floribundum atlas page

CalPhotos: Apocynum ×floribundum photos

3 photographs:
Group by