Oncoba.] xiii. BIXINE.E (oliver). 115 



Leaves obovnte or oblong, rounded at the apei. Stigma- 

 lobes subulate. Fruit circular in section 3. 0. Peiersiana. 



Leaves obovate or oblong. Stigma-lobes minute, spreading. 



Fruit longitudiually furrowed 4. 0. Teitensis. 



Leaves lanceolate or oblanceolate. Stigma obtuse, nearly or 



quite undivided 6. 0. Kraussiana. 



Leaves more or less pubescent or hairy at first, crenate-serrate, 

 petioles short. Flowers solitary. Stigma-lobes radiate, 



singly capitate. (Usually with short, slightly curved spines.) 2. 0. brachyanthera. 

 Leaves glabrous. 



Leaves obovate, shortly petiolate. Fruit ovoid-globose, 



pointed 5. 0. Kirkii. 



Leaves elliptical, oval or lanceolate. Stigma peltate, entire 

 or lobed. Fruit globose. (Usually with sleuder, axillary 



spines.) 1. 0. spinosa. 



Leaves lanceolate or oblanceolate ; petioles short. Stigma 



obtuse. Flower usually solitary 6. 0. Kraussiana. 



Leaves oval or elliptical ; petioles 1 in. or more. Flowers 

 3-4 in. diam. Stigma obtuse, scarcely lobed. Fruit 

 globose, usually more or less pointed or cuspidate . . . 7. 0. glauca. 

 Leaves large, membranous, ovate, acuminate; petioles 3-5 

 in. Flowers large, in lateral fascicles. Stigma-lobes ra- 

 diate, linear. Fruit echinate 8. 0. Welwilschii. 



Leaves oval-oblong. Flowers in lateral fascicles on straight, 

 erect peduncles. Stigma obtuse, undivided or minutely 



lobed. Fruit with wavy ridges 10. 0. lophocarpa. 



Flowers small, less than 1 in. diam. Fruit echinate . . . . 13. 0. echinata. 

 Flowers in axillary or extra-axillary racemes. 

 Leaves entire or undulate. 



Flowers about IJ in. diam. Pedicels 4-8 lines. Anthers very 



shortly pointed. Stigma-lobes 4-5, linear, radiate . . . 9. 0. Mannii. 

 Flowers -J in. or less in diam. Pedicels 1-2 lines. Anthers 

 very shortly pointed. Stigma-lobes radiate, obtuse. Fruit 



furrowed , 11. 0. ovalis. 



Flowers about \ in. diam., in extra-axillary racemes, shorter 



than petioles. Anthers aristate 12. (9. aristata. 



I.ieaves dentate-serrate, membranous. Flowers in loose or inter- 

 rupted axillary racemes. Stigma minute. Fruit smaU, echinate. 1 4. 0. dentaia. 



1. O. spinosa, Jorsk, ; Rich, in II. Seneg. 32. ^.10. A glabrous shrub, 

 usually armed with slender, spreading, very acute, axillary spines, some- 

 times 2 in. long or more. Young twigs marked with numerous, minute, j)ale, 

 lenticel-spots. Leaves membranous or rather coriaceous, shortly petiolate, 

 elliptical, generally shortly acuminate, serrulate or crenate-serrate (sometimes 

 obsoletely) from a little above the wedge-shaped or rounded bas^, 2-3^ in. 

 long, \\-2 in. broad. Flowers showy, white, fragrant, about 2 in. across, 

 terminal or lateral, upon short, axillary shoots. Calyx deeply 4-ficl, usually 

 persisting, about half as long as the petals, which appear to be variable in 

 number. Anthers linear, much shorter than the slender filaments, with a mi- 

 nute, acute, triangular tip beyond the cells. Fruit globose, 1^-2 in. diam. 

 or sometimes more, smooth, with a hard shell, marked with several equidistant, 

 scarcely prominent, longitudinal lines ; applied to ornamental and other uses 

 by the natives. — Lundia monacantha, Schum. et Thonn. Guin. Pi. 231. 

 Oncoba monacantha, Steud. Nora. Bot. 



Upper Quinea. Senegambia {Schumacher and Thonning) ; Cnpc Verde, {Richard) ; 

 Sierra Leone, Dr. Kirk ! Abbeokuta, and Nupe, Niger, Barter I 



