Page author: David Giblin
Mentha spicata
spearmint
WTU specimens
Other herbaria

Distribution: Both sides of the Cascades in Washington; widespread throughout all of North America.

Habitat: Banks of streams and ditches and other damp places.

Flowers: June-August

Origin: Introduced

Conservation Status: Not of concern

Description:
General:

Aromatic, perennial herbs from creeping rhizomes, the square stems nearly glabrous, upright, 3-10 dm. tall.

Leaves:

Leaves opposite, all cauline, sub-sessile, the blade lance-ovate to elliptic, 2-7 cm. long and 0.8-2.5 cm. broad, serrate, pointed, the mid-vein with stiff hairs beneath.

Flowers:

Verticels crowded into slender, terminal spikes, 3-12 cm. long and 0.5-1 cm. wide; calyx 1.5-2 mm. long, the tube glabrous, the 5 lobes with stiff marginal hairs; corolla 2-4 mm. long, nearly regular, four-lobed, with a short tube, pale lavender or sometimes white; stamens 4, equal, exerted; style 2-parted; ovary 2-celled, superior.

Fruits:

Nutlets 4

Accepted Name:
Mentha spicata L.
Publication: Sp. Pl. 2: 576. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Mentha spicata in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Mentha spicata checklist entry.

E-Flora BC: Mentha spicata atlas page.

CalPhotos: Mentha spicata photos.

USDA Plants: Mentha spicata information.

12 photographs:
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