Blooms: July-September
Habit: herb
Duration: perennial
Origin: Introduced from Eurasia
Distribution: West of the Cascades in Washington; introduced from Eurasia into northeastern United States.
Habitat: Escaped from cultivation along roadsides and in disturbed soil.
Habit: herb
Duration: perennial
Origin: Introduced from Eurasia
Distribution: West of the Cascades in Washington; introduced from Eurasia into northeastern United States.
Habitat: Escaped from cultivation along roadsides and in disturbed soil.
Species Description:
General: Pleasantly aromatic, perennial herbs from creeping rhizomes, the stems square, simple below the inflorescence, 3-7 dm. tall, loosely hairy.
Leaves: Leaves opposite, wholly cauline, gradually reduced upward, ovate to ovate-deltoid, 1.5-3 cm. long, entire, short-petiolate; clusters of small leaves in the leaf axils.
Flowers: Flowers solitary in the axils of small bracts, crowded in dense, trichotomously-branched, head-like clusters which terminate the stem and upper branches; bracts elliptic to obovate, 3-5 mm. long, purple-tipped; calyx 2-2.5 mm. long, the 5 triangular teeth purplish, shorter than to tube; corolla purple, 5 mm. long, two-lipped, the upper lip flat, shallowly notched, the lower lip spreading, 3-lobed; stamens 4, the upper pair equaling the corolla, the lower pair longer and divergent; style 2-parted; ovary 2-celled, superior.
Fruits: Nutlets 4
General: Pleasantly aromatic, perennial herbs from creeping rhizomes, the stems square, simple below the inflorescence, 3-7 dm. tall, loosely hairy.
Leaves: Leaves opposite, wholly cauline, gradually reduced upward, ovate to ovate-deltoid, 1.5-3 cm. long, entire, short-petiolate; clusters of small leaves in the leaf axils.
Flowers: Flowers solitary in the axils of small bracts, crowded in dense, trichotomously-branched, head-like clusters which terminate the stem and upper branches; bracts elliptic to obovate, 3-5 mm. long, purple-tipped; calyx 2-2.5 mm. long, the 5 triangular teeth purplish, shorter than to tube; corolla purple, 5 mm. long, two-lipped, the upper lip flat, shallowly notched, the lower lip spreading, 3-lobed; stamens 4, the upper pair equaling the corolla, the lower pair longer and divergent; style 2-parted; ovary 2-celled, superior.
Fruits: Nutlets 4
Accepted Name:
Origanum vulgare L.Synonyms:
(none)
Treated in Flora of the PNW as:
Origanum vulgare
Additional Resources:
PNW Herbaria Specimens: View list of Origanum vulgare specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Origanum vulgare specimens in the WTU Herbarium database.
Washington Flora Checklist: Origanum vulgare treatment.
E-Flora BC: Origanum vulgare atlas page.
CalPhotos: Origanum vulgare images.
USDA Plants Database: Origanum vulgare.
Richard Old
Richard Old
Richard Old
Richard Old
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 WA Native Plant Society |
