Napaea is a monotypic genus of flowering plant in the family Malvaceae. The single species is Napaea dioica, which is a tall perennial herb, native from central and eastern USA. Plants are occasionally grown as an ornamental plant in wildflower gardens. A common name is glade mallow.
N. dioica grows 1.5–3 metres (5–10 ft) tall with leaves up to 75 centimetres (30 in) in length. The plant has white flowers which bloom for 4–5 weeks appearing in late June. The blooms open in the morning and close at sundown.
The species is found in east-central Ohio, across central Indiana and the northern half of Illinois to southwestern Wisconsin, southeastern Minnesota and northeastern Iowa. It prefers to grow in damp conditions and can be found in ditches or on stream banks.
- Gardner, Harold W. (2011). Tallgrass prairie restoration in the Midwestern and Eastern United States : A hands-on guide. New York: Springer. pp. 154–155. ISBN 978-1-4419-7426-6.
- Iltis, Hugh H. (July 1963). "Napaea dioica (Malvaceae): Whence Came the Type?". American Midland Naturalist. 70 (1): 90. doi:10.2307/2422773.
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