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

Lysimachia terrestris (L.) Britton, Sterns & Poggenb.
bog loosestrife (earth loosestrife)
Myrsinaceae (Myrsine family)

Introduction to Vascular Plants

© Jeremy Smith  Email the photographer   (Photo ID #25577)

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Distribution of Lysimachia terrestris
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Species Information

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Perennial herb from a rootstock; stems erect, solitary, simple, smooth, reddish- to purplish-black streaked, 20-90 cm tall.
Basal leaves lacking; stem leaves opposite, the lowermost leaves unstalked, clasping-based, 5-15 cm long, the upper leaves linear-lanceolate to narrowly elliptic or lanceolate, 3-8 cm long, short-stalked, dotted with black spots, with small, dark bulblets produced in the leaf axils.
Inflorescence a terminal, loose, leafy-bracted, simple to compound, elongate cluster, the individual flowers on stalks arranged on a single axis, the lower flowers often whorled, the flower stalks slender, 1-2 cm long; corollas deep yellow, saucer-shaped, streaked with red or purplish-black spots, deeply 5-lobed, the lobes oblong to lanceolate, 4-8 mm long; calyces 5-lobed, the lobes lanceolate, 2-4 mm long; filaments about 3 mm long, fused at the bases, shorter than the corolla lobes; sterile stamens lacking.
Capsules, breaking into valves at dispersal; seeds few, chocolate brown, very finely pitted.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Bogs, swamps and wet ditches in the lowland zone; infrequent on Vancouver Island and adjacent lower mainland; introduced from E North America.

Source: The Illustrated Flora of British Columbia


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.

Synonyms and Alternate Names

Lysimachia terrestris var. ovata (Rand & Redf.) Fernald

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References