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Project Name Data (Last Modified On 1/29/2013)

Flora Data (Last Modified On 1/29/2013)
Genus BYTTNERIA Loefl.
PlaceOfPublication Iter Hisp. 313. 1758.
Synonym Pentaceros G. F. W. Meyer, Primit. Fl. Essequeboensis 136. 1818.
Description Undershrubs or shrubs, erect or scandent, sometimes lianas, the stems often aculeate, glabrous or with simple or stellate hairs. Leaves alternate, simple, petio- late, stipulate, the stipules caducous, the blade entire or not. Inflorescences axillary, usually umbelliform, sometimes of sessile or pedunculate, axillary or subterminal cymes. Flowers small, hermaphrodite, actinomorphous, pedicellate, bracteolate; calyx deeply 5-lobate, deciduous; petals 5, valvate, the limb concave, unguiculate, lobulate or not at the apex, the apex inflexed and adnate to the androecium, pro- longed dorsally into an elongate, simple or 3-fid appendage; stamens 5, the staminal tube short, the sessile or short-stipitate anthers oppositipetalous, the 5 staminodes alternipetalous; anthers 2- or 3-thecate, the thecae parallel, extrorse, longitudinally dehiscent; ovary sessile, 5-celled, each cell 2-ovulate; style simple, short; stigma 5-fid or entire. Capsule globose, spinose, the carpels separating at maturity into 5 cocci, each coccus dehiscent along the ventral suture and along the dorsal upper half, 1-seeded; seeds ascending, exalbuminous; embryo straight; cotyledons large, foliaceous, spirally convolute around the radicle.
Habit Undershrubs shrubs
Distribution A pantropical genus of about 9G species, especially well represented in tropical America (about 50 species) and in Madagascar (27 native species).
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