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

Penthorum sedoides L.
ditch stonecrop
Penthoraceae (Stonecrop family)
(Previously in Crassulaceae)

Introduction to Vascular Plants

© RĂ©al Sarrazin  Email the photographer   (Photo ID #26691)

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Distribution of Penthorum sedoides
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Species Information

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Perennial herb from a rhizome; stems erect, simple or branched above, smooth below, 20-70 cm tall.
Alternate, lanceolate to narrowly elliptic, 5-10 cm long, sharply toothed, long-pointed, not succulent.
Inflorescence a terminal cyme, with glandular-stalked hairs, 2-8 cm long, the flowers borne on 1 side of the axis, greenish; petals usually absent; sepals 5, broadly-lanceolate.
Follicles, strongly beaked, flattened, circular, 5-6 mm wide, spreading at maturity, the base formed by the expanded hypanthium, eventually circumcissile just above the placentae; seeds spindle-shaped, covered with minute papillae, usually reddish-brown.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Source:  The USDA

Habitat / Range

Cranberry bogs in the lowland zone; rare in SW BC, known only from Richmond and Fort Langley; 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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References