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

Hypericum majus (A. Gray) Britton
large Canadian St. John's-wort (large St. Johnswort)
Clusiaceae

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15846)

E-Flora BC Static Map
Distribution of Hypericum majus
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Species Information

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General:
Perennial or sometimes annual herb from a fibrous root; stems erect, branched above, glabrous, 10-50 cm tall.
Leaves:
Stem leaves lanceolate to oblong, unstalked, obtuse to abruptly sharp-pointed, 5-7 nerved, 1-4 cm long, glabrous.
Flowers:
Inflorescence 5-50 flowered, erect; petals orange-yellow, 2-4 mm long; sepals lanceolate, abruptly sharp-pointed, 5-6.5 mm long; stamens less than 30; styles 3.
Fruits:
Membranous capsules, 5.5-7.5 mm long; seeds yellowish, 0.5 mm long, longitudinally grooved and finely transversely corrugate.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to wet waste places, vernal pools, gravelly shorelines and tidal shores in the lowland zone; rare in SW and SC BC; E to NF and S to DE, PA, NE, CO and WA.

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