118 xm. BIXINEJS (olivek). [Oncoba. 



oblong-elliptical or oblong-obovate, shortly cuspidate, entire or slightly undu- 

 late leaves, 6-12 in. long, 2|-5| in. broad. Petioles 1-2 in., slightly curved 

 near the blade. Flowers about l\ in. diam., in interrupted racemes 3-6 in. 

 long, from the axils of the upper leaves ; pedicels 4-8 lines, articulated at 

 the base, in fascicles of 2, 8 or more or single, scattered along the raceme. 

 Sepals 3. Anthers linear, shortly apiculate, with slightly interrupted cells. 

 Ovary glabrous. Stigma radiate, with about 4 spreading or recurved linear 

 lobes. Fruit not seen. 



Upper Guinea. Ambas Bay ; Old Calabar river ; Fernando Po, Mann ! 



10. O. lophocarpa, Oliv. A glabrous tree, 30-40 ft. high. Leaves 

 oval-oblong, sometimes lanceolate-elliptical, shortly acuminate, finely mem- 

 branous, entire or faintly undulate, 4-7 in. long, lf-3 in. broad ; curved 

 secondary nerves rather prominent below. Petioles |-1^ in. long. Flowers 

 usually from the axils of fallen leaves on shoots of the previous season, 

 solitary or in fascicles of 2, 3 or more, on erect, firm, straight peduncles, 

 lf-tym. long, about lf-2| in. diam. Sepals 3, deciduous. Petals nume- 

 rous, half as long again as the sepals. Anthers linear, without a terminal 

 appendage. Ovary glabrous, soon showing numerous longitudinal furrows, 

 which in the young lanceolate-oblong fruit (which only I have seen) are 

 bounded by strongly-marked, much crisped or wavy ridges, confluent in 

 pairs below and above. Style rigid ; stigma obtuse, undivided or denticu- 

 late, the extremity apparently more or less resolved at length into a minute 

 viscous or semifluid drop. The fruit narrows at the top to an obtuse point. 



Upper Guinea. Camaroous mountain, 2-3000 ft., Mann ! 



1 1 . O. ovalis, Oliv. A glabrous tree of 20-30 ft., with entire or slightly 

 undulate, elliptical or oblong-elliptical, shortly, abruptly, and obtusely acu- 

 minate, firmly membranous or rather coriaceous leaves, 4-6 in. long, If- 3 in - 

 broad. Petiole f -1 in. Flowers about 4-5 lines in diam., in axillary, rather 

 slender racemes, about 3 in. long, on short pedicels of 1-2 lines. Anthers 

 very shortly pointed. Ovary longitudinally furrowed, tapering into the style. 

 Stigma with 4-5 radiate, recurved, obtuse lobes. Fruit smooth, lanceolate- 

 oval, 2|-3 in. long, tapering at the top and marked with 4 or 5 strong, equi- 

 distant, longitudinal furrows with raised margins. 



Upper Guinea. Camaroons mountain, 4000 ft., Mann ! 



12. O. aristata, Oliv. A small glabrous tree. Loaves 9-12 in. Ion*, 

 4-5 in. broad, oblong-elliptical or obovate-elliptical, wedge-shaped at base ; 

 apex with an abrupt narrow acumen, \-\ in. long. Midrib and secondary 

 nerves prominent beneath. Petioles 3-4 in. long, slightly thickened and curved 

 at the top. Male flowers about \ in. diam., shortly pedicellate, in slender extra- 

 axillary racemes about 2 in. long. Sepals 3. Petals 7-8. Anthers minutely 

 pubescent, terminating in an awn half as long to nearly as long as the cells- 

 Pistillate flowers and fruit unknown. 



Upper Guinea. River Gaboon, Mann ! 



13. O. echinata, Oliv. A glabrous shrub. Leaves thinly coriaceous, 



