Vascular Plants of North Carolina
Account for Flower-of-an-hour - Hibiscus trionum   L.
Members of Malvaceae:
Members of Hibiscus with account distribution info or public map:
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Section 6 » Order Malvales » Family Malvaceae
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DistributionScattered from the Mountains to Greene County in the Coastal Plain; most widespread in the Piedmont.

Native of Eurasia and Africa; in N.A. throughout the U.S. and much of southern Canada.
AbundanceGenerally uncommon as an escape; perhaps somewhat overlooked.
HabitatWaste ground, crop fields, garden weed, vegetable garden weed, cemetery, pasture.
PhenologyFlowering June-September.
IdentificationThis is an annual that usually does not exceed 2 feet high. The leaves are few to many, deeply 3-lobed, margins with irregular blunt teeth -- producing an odd-looking but very distinctive form. The flowers occur on long stalks from leaf axils, with the petals about 1-inch long, creamy yellow with a brown-violet basal spot; each flower lasts only a few hours (hence the common name).
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Other Common Name(s)
State RankSE
Global RankGNR
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US Status
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