200. APOCYNACEAE 435 



i6. Anthers with blunt, reflexed tails at the base and a small, feathery mucro 

 at the apex. Corolla white or yellow ; tube with 5 longitudinal ridges 

 inside, without scales or swellings. Stigmatic head spindle-shaped, with 

 2 narrow lobes. Seeds with an apical tuft of hairs. — Species 5. West 

 Africa and equatorial Lake-region. One species yields rubber. 



Motandra A. DC. 



Anthers with pointed, almost straight tails at the base and without an 



apical mucro. Corolla-tube usually with scales or swellings above the 



insertion of the stamens 17 



17. Flowers in dense axillary cymes, inconspicuous. Corolla-lobes as long as or 



shorter than the tube, broad. Stigmatic head conical, crowned by a 

 2-cleft point. — Species 5. Central Africa. . . . Zygodia Benth. 

 Flowers in terminal and axillary panicles or corymbs, more rarely in few- 

 flowered cymes. Corolla-lobes as long as or longer than the tube, usually 

 narrow. Stigmatic head campanulate. Seeds with an apical tuft of 

 hairs. — Species 20. West Africa and Madagascar. One species yields 

 rubber. (Including Codonura K. Schum., Guerkea K. Schum., and 

 Perinerion Baill.) Baissea A. DC. 



18. Calyx with 5 glands inside the base. Disc none. Twining shrubs. Stipules 



usually present 19 



Calyx with numerous glands inside the base. Erect shrubs or trees. 

 Stipules absent 20 



19. Ovary i, entire, more or less completely 2-celled — Species i. West 



Africa. (Under Alafia Thouars) Holalafla Stapf 



Ovaries 2, free. — Species 15. Tropics. (Including Ectinodadus Benth.) 



Alafia Thouars 



20. Corolla-lobes overlapping to the left. Calyx with unequal segments. 



Disc absent. Ovary i, two-celled. — Species i. Madagascar. 



Ochronerium Baill. 

 Corolla-lobes overlapping to the right. Disc present. Ovaries 2, free. 21 



21. Flowers in many-flowered, axillary cymes. Corolla fleshy, white or 



yellowish ; segments not folded in the bud. Stigmatic head ovoid. 

 Mericarps oblong or spindle-shaped. Seeds with a feathery, basal awn. — 

 Species 3. Central Africa. One of them (F. elaslica Stapf, Ireh-tree) 

 yields rubber (Lagos-rubber). (Under Kickxia Blume) 



Funtumia Stapf 

 Flowers solitary or in few-flowered fascicles. Corolla not fleshy, usually 

 red ; segments folded lengthwise in the bud. Stigmatic head oblong. 

 Mericarps linear. Seeds with an apical tuft of hairs. — Species 30. 

 Madagascar and East Africa. Some of the species yield timber and 

 rubber Mascarenhasia A. DC. 



22. (i.) Carpels united throughout their whole length. [Tribe ARDUI- 



NEAE.] 23 



Carpels only partly united ; ovaries wholly free or in their upper part only, 

 styles usually free at the base. [Tribe PLUMIEREAE.] ... 33 



