122. EUPHORBIACEAE 315 



Disc of the female flowers cupular. Styles awl-shaped. Leafstalk very 

 short. Stipules awl-shaped, deciduous. Spikes unisexual. — Species i. 

 Madagascar. (Under Alchornea Swartz) Palissya Baill. 



47. Calj^x of the male flowers 2-partite. Stamens numerous. Styles thickish, 



united at the base. Shrubs. Leaves narrow, penninerved. Flowers in 

 axillary spikes, monoecious. — Species 1. Equatorial West Africa. 



Neopycnocoma Pax 

 Calyx of the male flowers 3 — 5-partite 48 



48. Flowers in leaf-opposed spikes, monoecious. Calyx 4-partite. Styles 4. 



Stem herbaceous. Leaves broad. — Species 2. Southern West Africa 



(Amboland) Pseudotragia Pax 



Flowers in axillary or terminal spikes or panicles. Stem woody. . . 49 



49. Leaves narrow, penninerved. Flowers monoecious, in spikes. Calyx 



of the male flowers 3-partite. Styles thin. — Species i. Central 



Africa Argomuellera Pax 



Leaves broad, palminerved. Flowers usually dioecious. — Species 10. 

 Tropical and South Africa. (Including Echinus Lour.) Mallotus Lour. 



50. (36.) Anther-halves attached at the middle. Stamens 6 — 12. Calyx 



5-partite. Ovary 3-celled. Styles 3, united at the base, 2-cleft. Herbs. 

 Flowers in cymes. — Species 8. South Africa. (Including Para- 



denoclinc Muell. Arg.) Adenocline Turcz. 



Anther-halves attached at the base or the top. Styles undivided or many- 

 cleft 51 



51. Anther-halves attached at the top, pendulous, spreading downwards. 



Styles 2, rarely 3, undivided. Herbs or undershrubs 52 



Anther-halves attached at the base, erect, spreading upward? ... 54 



52. Stamens 8 — 20. Di-?c of the femala flowers reduced to two scales. Calyx 



3-partite. Leaves opposite. — Species 3. North Africa ; also intro- 

 duced in South Africa. Used as dye-plants, pot -herbs, and in medicine. 



" Mercury." Mercurialis L. 



Stamens 2 — 7. Disc none. Flowers monoecious. Leaves alternate. . 53 



53. Calyx of the female flowers 3-partite. Stamens 2 — 3. Leaves narrow, 



entire. Flowers in clusters. — Species i. South Africa. 



Seidelia Baill. 



Cah-x of the female flowers reduced to a single scale or absent. Stamens 



4 — 7. Leaves broad, more or less toothed. Flowers in racemes. — 



Species 2. South Africa Leidesia Muell. Arg. 



54. Stem herbaceous. Flowers monoecious. Calyx of the female flowers 



imbricate in bud. Stamens 3 — 10. Disc of the female flowers reduced 

 to 3 — 4 hnear scales. Ovary 3 — -|-celled. Styles undivided. — Species 



I. Central Africa Micrococea Benth. 



Stem woody. Flowers dioecious, rarelv monoecious, but then calyx of 

 the female flowers valvate in bud. Ovary 2 — 3-celled 55 



55. Styles undivided. Disc of the female flowers entire or lobed. Stamens 5 



or more, usually numerous. — Species 25. Tropical and South Africa. 



