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10. Operculina S. Manso, Enum. Subst. Bras. 16. 1836. Hall. f. in Bot Jahrb. Syst. 16:582. 1893, Prain in J.As. Soc. Beng. 74:307.1906, van Ooststroom in van Steenis, Fl. Males., ser. 1,4:454.1953, Verdcourt in Hubbard & Milne-Redhead, Fl. Trop. E. Afr. 61.1963, Austin in Ann. Missouri Bot. Gard. 62:184.1975.
DANIEL F. AUSTIN
Florida Atlantic University, Boca Raton, Florida, USA
Large to small herbaceous climbers, the stems, petioles and pedicels often winged. Leaves entire to lobed, often cordate. Flowers axillary, in few-flowered cymes or solitary. Sepals large, glabrous, enlarging in fruit and becomings coriaceous, often irregularly erose on the margins. Corolla broadly campanulate, funnel-shaped or salverform, white, yellow or reddish. Anthers twisted in age. Fruits dehiscent at or above middle by a circumscissile epicarp, the upper part more or less fleshy and separating from the lower part and from the endocarp, 2-locular. Seeds glabrous or pubescent.
A genus of about 15 species found throughout the tropics. Flowering specimens are difficult to distinguish from Merremia. The assemblage has many of the same facies as Merremia.
Lower Taxon
Related Synonym(s):
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