Page authors: Don Knoke, David Giblin
Orobanche minor
WTU specimens
Other herbaria

Distribution: Occurring only sparingly, west of the Cascades in Washington; Washington south to Oregon; along the Atlantic Coast of the U.S.

Habitat: Lowland areas, parasitic, especially on clover.

Flowers: May-June

Origin: Introduced

Conservation Status: Not of concern


Fleshy root parasites, the plants 1.5-5 dm. tall, strict and simple from a bulbous-thickened base, somewhat glandular-pubescent throughout.


Leaves alternate, reduced to a few bracts.


Inflorescence spicate, not dense, the axis exposed in the lower part; flowers subtended by a bract but without bractlets; calyx split to the base, forming 2 lateral segments, these unequally forked; corolla white or yellowish, marked with violet, 10-15 mm. long; anthers glabrous.


Capsule 2-celled.

Accepted Name:
Orobanche minor Sm.
Publication: Engl. Bot. 6: pl. 422. 1797.

Synonyms & Misapplications:
Orobanche columbiana
Additional Resources:

PNW Herbaria: Specimen records of Orobanche minor in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Orobanche minor checklist entry.

E-Flora BC: Orobanche minor atlas page.

CalPhotos: Orobanche minor photos.

USDA Plants: Orobanche minor information.

15 photographs:
Group by