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Sphenostemonaceae

Sphenostemonaceae P. Royen & Airy Shaw, Kew Bull. 27: 325 (1972).

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Part of the book series: The Families and Genera of Vascular Plants ((FAMILIES GENERA,volume 14))

Abstract

Evergreen shrubs or trees up to 25 high. Leaves alternate, opposite to subopposite, or pseudo-whorled, petiolate, exstipulate (present, minute?), simple, coriaceous, entire to glandular-dentate, penninerved. Inflorescences axillary or terminal racemes, bracteate at base, floral bracts caducous. Flowers hermaphrodite or rarely unisexual, actinomorphic; perianth composed of 4–6 distinct, imbricate, caducous sepals, and 4–6 distinct, imbricate, fleshy, caducous petals, or apetalous; stamens 4–6 or 8–13, distinct, in one whorl, antesepalous, filaments short or almost absent, anthers introrse; disk absent, ovary superior, sessile, bicarpellate, bilocular, fusiform to cylindric, style absent, stigma slightly bipartite, cup-shaped; ovules one per locule, pendant, anatropous, apotropic, unitegmic. Fruit a berry, sometimes asymmetric, crowned by the stigma. Seed 1 or 2, non-arillate; embryo surrounded by chalazal envelope with copious, ruminate endosperm.

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Thiv, M. (2016). Sphenostemonaceae. In: Kadereit, J., Bittrich, V. (eds) Flowering Plants. Eudicots. The Families and Genera of Vascular Plants, vol 14. Springer, Cham. https://doi.org/10.1007/978-3-319-28534-4_31

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