436 200. APOCYNACEAE 



23. Ovary i-celled, sometimes incompletely 2-celled. [Subtribe landol- 



PHiiNAE.] 24 



Ovary completely 2-celled. [Subtribe melodininae.] .... 29 



24. Corolla funnel-shaped, large, yellow ; tube cylindric below, much widened 



above. Disc ring-shaped. Calyx without glands. Stamens inserted 

 somewhat below the mouth of the corolla-tube. Fruit a woody, spinous, 

 2-valved capsule. Seeds winged, with fleshy albumen. Erect shrubs. — 

 Species i. Naturalized in the tropics. An ornamental and medicinal 



plant Allamanda L. 



Corolla salver-shaped ; tube more or less cylindric. Disc none. Fruit 

 a berry 25 



25. Anthers tailed at the base. Stamens inserted in the middle of the corolla- 



tube. Calyx small, with 5 small glands within. Ovary incompletely 

 2-celled. Style short. Seeds with flesh3^ ruminate albumen. Erect 

 shrubs or trees. — Species 5. West Africa. Used medicinally. {Iboga 



Schum.) Tabernanthe Baill. 



Anthers not tailed. Calyx small and without glands inside, or large and 

 with numerous glands within. Seeds with horny albumen. Twining 

 shrubs, more rarely erect shrubs or undershrubs 26 



26. Stamens inserted near the mouth of the corolla-tube. Style long, usually 



hairy. Calyx without glands. — Species 35. Central Africa. Some 

 species yield rubber and edible fruits. (Including Sclerodictyon Pierre) 



Carpodinus R. Br. 



Stamens inserted near the base or the middle of the corolla-tube. Style 



short or rather short, usually glabrous 27 



27. Calyx large, with numerous filiform glands within, spreading or bent back 



in the fruit. Corolla fleshy. Placentas much projecting. Pericarp 



woody. Flowers in terminal panicles. — Species i. West Africa 



(Congo). (Under Landolphia Beauv.) . . . Vahadenia Stapf 



Calyx small, without glands on the inside 28 



28. Flowers in axillary, or axillary and termmal cymes. Ovules 12 — lO ; 



placentas much projecting. Glabrous plants. — Species 25. Central 

 Africa. Several species yield rubber. (Including Aphanostylis Pierre 

 and Cylindropsis Pierre). (Plate 129.) . . Clitandra Benth. 



Flowers in terminal panicles or corymbs sometimes overtopped by barren 

 shoots and then apparently lateral. — Species 45. Tropical and South 

 Africa. Several species yield rubber, dyes, and edible fruits, from 

 which drinks are prepared. {Pacourea Aubl., including Ancylobothrys 

 Pierre and Vahea Lam.) Landolphia Beauv. 



29. (23.) Carpels cohering along the ventral suture only. Ovules numerous» 



in several rows. Stigmatic head glabrous. Stamens inserted in the 

 upper half of the corolla-tube. Fruit usually of 2 spreading berries. 

 Trees. Leaves opposite, with numerous axillary glands. Flowers in 



