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

Introduction to Vascular Plants


© Jeremy Smith     (Photo ID #25577)


E-Flora BC Static Map

Distribution of Lysimachia terrestris
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Species Information

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.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Habitat and Range

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

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Lysimachia terrestris var. ovata (Rand & Redf.) Fernald