14 X. BIXACE^. 



united at base, persistent ; sometimes partly adnate to the 

 ovary. Petals sometimes wanting, rarely large. Stamens de- 

 finite or indefinite, hypogynous or rarely perigynous. Ovary 

 1-locular, witli parietal placentae. Fruit either a fleshy berry, 

 or a pulpy, dehiscent capsule. Seed albuminous ; embryo 

 straight, central. — Trees or shrubs, with alternate, simple 

 leaves ; often spiny. 



Suborder 1. Bixine^:. Ovary quite free. Stamens hypogynous. (Gren. 1-7.) 

 Flowers bisexual or polygamous. Style columnar or short. 

 Sepals deciduous. Petals 10-12, much larger than the 



sepals 1. Oncoba. 



Sepals 4-5, persistent. Petals 4-5, small, deciduous 2. Rawsonia. 

 Calyx persistent, deeply 10-12-fid in 2 rows ; petals 



none 3. Scolopia. 



Flowers imisexual, dioecious. Stigma subsessile. Ovule 



solitary 4. XvLOSiiA ? 



Flowers unisexual, dioecious. Styles as many as the 

 carpels. 

 Anthers opening by slits. Petals 0. 



Calyx 6-10-fid in a double row ; capsule .... 5. Trimeria. 



Calyx 5-7-fid in a single row ; berry 6. Dovyalis. 



Anthers opening by pores. Petals 5, with a scale at 



base 7. KlGGELARIA. 



Suborder 2. Homaline^. Flowers bisexual. Ovary half- inferior. 

 Stamens perigynous. (Gren. 8.) 

 Calyx with a conical, adherent tube, and a 10-30-fid 



limb ; the segments in two rows 8. Homalium. 



SUBOEUEE 1. BlXITfEiE. (Gren. 1-7.) 

 1. 03>TC0BA, Forsk. 



Flowers polygamous. Sepals 3-5, deciduous, imbricated. 

 Petals 6-12, much larger than the sepals, ob ovate, clawed, im- 

 bricate. Stamens many, inserted in several rows on a fleshy 

 torus ; filaments filiform ; anthers linear or oblong, erect, 

 opening by slits. Ovary with 3-10 parietal placentae ; style 

 simple ; stigma radiate ; ovules many. Berry leathery, pulpy 

 within ; seeds numerous. — Fl. Cap. i. p. QQ. 



Trees or shrubs, glabrous or pubescent, sometimes spinous. Leaves 

 simple, entire or serrulate. Flowers terminal, large, white or yellow.-^-S 

 South African species ; 2 found at Natal, 1 at Delagoa Bay. 



2. RAWSONIA, Harv. and Sond. 



Flowers perfect or polygamous. Sepals 4-5, very unequal, 

 concave, imbricate, persistent. Petals 4-5, unequal and con- 

 cave like the sepals and not longer, deciduous. Petaloid 

 scales {staminodia) opposite the petals and longer, each ^vith 

 a 2-lobed, fleshy gland at base. Stamens many, in several 



