5l8, 219. RUBIACEAE 



Flowers in forked cymes. Ovules with a thickened funicle. Fruit a 

 drupe. Seeds with scanty albumen or without albumen. [Tribe 

 GUETTARDEAE.] 17 



17. Calyx deciduous. Corolla salver-shaped. Anthers included. Ovary 4 — 9- 



celled. Fruit globose ; cells of the stone curved. — Species i. East 

 Africa, Madagascar and neighbouring islands. Used as an ornamental 



plant and in medicine Guettarda Blume 



Calyx persistent. Corolla funnel-shaped. Anthers somewhat exserted. 

 Ovary 2 — 8-celled. Fruit oblong. — Species 5. Madagascar and 

 neighbouring islands. They yield timber and medicaments. (Under 

 Guettarda Blume) Antirrhoea Comm. 



18. (3.) Flowers in terminal or terminal and lateral heads. Ovary i — 2-celled. 



Fruit dry, of i — 2 nutlets. Herbs. Stipules united. [Tribe KNOX- 



lEAE.] 19 



Flowers in lateral c^vTnes, fascicles, or panicles. Ovary 2 — many-celled. 

 Fruit fleshy, drupe-like. Shrubs or trees, rarely {P achy stigma) herbs, 

 but then ovary 3 — 5-celled 22 



19. Ovary i-celled. Sepals i — 2. Corolla bluish, funnel-shaped, 5-lobed. 



Anthers included. Leaves whorled. Flowers connate in pairs, without 

 bract eoles. Stipules undivided. — Species i. Southern West Africa 



(Angola) Calanda K. Schum. 



Ovary 2-celled. Leaves opposite. Stipules lacerated or bristle-like. 20 



20. Calyx with awl-shaped, not enlarged segments. Corolla violet, salver- 



shaped, with 4 lobes bearded at the apex. Anthers exserted. Disc 

 tubular. Stigma 2-lobed. Mericarps dehiscing lengthwise. — Species 

 I. Equatorial West Africa (Cameroons). Paragophyton K. Schum. 

 Calyx with some of the segments enlarged and leaf-like. Corolla with long 

 hairs at the throat. Mericarps dehiscing transversely or indehiscent. 21 



21. Mericarps separating from a central column, dehiscing transversely. 



Calyx-segments 4, one of them enlarged. Corolla-lobes 4. Anthers 

 included. Stigma 2-lobed. Heads in panicles. — Species i. West 



Africa (Togo) Baumannia K. Schum. 



Mericarp. without a central column, indehiscent. — Species 15. Tropical 

 and South Africa. (Including Holocarpa Bak.) . Pentanisia Harv. 



22. Ovary-cells and fruit-stones 20 — 30. Flowers polygamous-dioecious, 



4-merous. Corolla white or yellowish, glabrous within. Anthers 

 included or nearly so. Seeds with scanty albumen. Shrubs. — Species 



I . Madagascar and Seychelles Timonius Rumph. 



Ovary-cells 2 — 10. Fruit-stones i — 10. Seeds with copious albumen. 

 [Tribe VANGUERIEAE.] 23 



23. Stem herbaceous. Leaves whorled. Ovary 3 — 5-celled. Stigma lobed. — 



Species 20. Central and South-east Africa. {Fadogia Schweinf.) 



Pachystigma Höchst. 

 Stem woody. Leaves opposite 24 



