E-Flora BC: Electronic Atlas of the Flora of British Columbia

Mentha pulegium L.
pennyroyal
Lamiaceae (Mint family)

Introduction to Vascular Plants

© Jeremy Gatten  Email the photographer   (Photo ID #70983)

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Distribution of Mentha pulegium
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Species Information

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General:
Perennial herb from a creeping rhizome; stems reclining to ascending, stout, 10-60 cm long, short-hairy, often red, 4-angled.
Leaves:
Opposite, narrowly egg-shaped to elliptic, 1-2 cm long, 0.6-1 cm wide, tips rounded, bases somewhat wedge-shaped, minutely-hairy, gland-dotted, margins somewhat toothed, 1-6 teeth on each side; short-stalked; uppermost leaves reduced, more or less unstalked.
Flowers:
Inflorescence of many separated, axillary flower clusters, subtended by leaf-like bracts barely longer than flowers; corollas tubular, violet to lavender, 5-8 mm long, 4-lobed, the lobes nearly equal, hairy outside, the tube somewhat swollen on one side below the mouth; calyces cone- to bell-shaped, 2.5-4 mm long, short-hairy and hairy within, weakly 2-lipped, the lower 2 teeth narrower than upper 3.
Fruits:
Nutlets, 4 clustered together, egg-shaped.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet waste places in the lowland zone; rare in SW BC; introduced from Europe.

Source: The Illustrated Flora of British Columbia

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References