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

Mirabilis nyctaginea (Michx.) MacMill.
umbrellawort (heartleaf four o'clock)
Nyctaginaceae (Four o'clock family)

Introduction to Vascular Plants

© Barb Scharf  Email the photographer   (Photo ID #81323)

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Distribution of Mirabilis nyctaginea
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Species Information

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Perennial herb from a deep root; stems erect, branched, 30-100 cm tall, glabrous to slightly hairy.
Opposite, broadly egg-shaped to rounded, to 10 cm long, tips pointed, heart-shaped to squared off at base, basically glabrous; stalks 5-20 mm long.
Inflorescence of umbels grouped in branched clusters; flower stalks hairy; bracts of inflorescence saucer-shaped, about 1 cm wide and papery in fruit, bracts 5, about 2/3 fused, base short-hairy, lobes glabrous; perianth white or pale pink, 8-10 mm long, broadly funnel-shaped with widely-flaring 5-lobed limb.
Achenes, broadly club-shaped, 4-6 mm long, 5-angled, wrinkled or warty, usually densely hairy.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry waste places in the montane zone; rare in SC BC, known only from Salmon Arm and Spences Bridge; introduced from C and 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

Allionia nyctaginea Michx.
Mirabilis collina Shinners
Oxybaphus nyctagineus (Michx.) Sweet

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References