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Published In: Species Plantarum 2: 695. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 8/25/2017)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Introduced


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3. Hibiscus syriacus L. (rose of Sharon)

Pl. 452 h; Map 2053

Plants shrubs or small trees. Stems 200–600 cm long, erect or ascending, sparsely to moderately hairy when young, becoming glabrous or nearly so with age, the twigs usually light brown. Leaf blades 3–10 cm long, ovate in outline, mostly deeply 3-lobed, the lobes sometimes shallowly lobed again, the margins coarsely scalloped or bluntly toothed, the upper surface glabrous, the undersurface glabrous or sparsely pubescent with stellate or simple hairs. Stipules more or less persistent. Bractlets subtending the calyx 8–10, 8–18 mm long, glabrous or finely pubescent with stellate hairs. Calyces 10–15 mm long at flowering, not becoming enlarged or inflated at fruiting, finely pubescent with stellate hairs. Petals 3–5 cm long, white or cream-colored to pink or purple, usually with dark reddish purple bases. Fruits 1.5–2.5 cm long, ovoid to ovoid-cylindric, noticeably beaked, hairy, yellow. Seeds 5–8 per locule, 4.0–4.5 mm long, broadly kidney-shaped to nearly, semicircular in outline, the surface minutely roughened or with a faint pattern of reticulate ridges, dark brown, glabrous, the margin densely pubescent with a line of spreading, simple or fasciculate, orangish tan hairs. 2n=80, 90, 92. July–September.

Introduced, uncommon and widely scattered in the state (native of Asia, sporadically escaped from cultivation in North America). Banks of streams and rivers, bottomland forests, and mesic upland forests; also roadsides, railroads, and open disturbed areas.

Hibiscus syriacus is commonly cultivated as an ornamental shrub. Flower color is highly variable and some cultivars have doubled corollas. It often persists at old home sites, but only rarely becomes established in self-reproducing populations outside cultivation.



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