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)

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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


Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-11-21 8:29:58 PM ]
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© E-Flora BC: An initiative of the Spatial Data Lab, Department of Geography UBC, and the UBC Herbarium.