122. EUPHORBIACEAE 



317 



Stamens 12 or more. Male flowers without a rudimcntarv pistil. Flowers 

 in panicles. 64 



63. Stamens opposite the sepals, inserted upon a flat receptacle, free. Fruit 



a drupe. — Species i. West Africa .... Microdesmis Planch. 



Stamens opposite the petals, inserted upon a stalk-like receptacle. Fruit 



a capsule. — Species 40. South and Central Africa. Some are used as 



ornamental plants , Cluytia L. 



64. Petals free. Stamens free. Fruit a capsule. Leaves undivided, pin- 



nateh- nerved. Shrubs. — Species i. Equatorial West Africa (Congo). 



Mildbraedia Pax 



Petals united below. Fruit a drupe. Leaves lobed or dissected, palmately 



nerved at the base. Trees 65 



65. Leaves lobed. — Species i. Madagascar Givotia Griff. 



Leaves dissected. — - Species 3. West Africa. Yield timber and fat from 



the seeds Rieinodendron Muell. Arg. 



66. (59.) Stamens i — 4, rarely more, and then ovary many-celled. Disc little 



developed or wanting. Male flowers without a rudimentary pistil. 



Style-branches undivided. [Tribe HIPPOMANEAE.] . . ." . 67 



Stamens 5 or more. Ovary 2 — 4-celled. Style-branches two-cleft or 



lobed. Sepals 4 — 8. Shrubs or trees 74 



67. Stamens 8 or more. Calyx cup-shaped, almost entire. Ovary many- 



celled. Style columnar, many-branched at the top. Fruit a capsule. 

 Trees. Inflorescence spicate ; bracts adnate to the rachis throughout 

 their whole length, at first enclosing the flower-buds. Flowers monoec- 

 ious. — Species i {H. crepitans L., sandbox-tree). Naturalized in the 

 tropics. Ornamental tree, yielding oil and medicaments ; the fruits 



are used as sand-boxes ; the juice is poisonous Hura L. 



Stamens i — 4. Ovary 2 — 4-celled. Bracts adnate to the rachis of the 

 inflorescence by their base only 68 



68. Stamens i — 3, the filaments entirely or almost entirely united. Shrubs or 



trees. Flowers monoecious 69 



Stamens 2 — 4, the filaments free or united at the base only. Styles free 

 or united at the base. Ovary 2 — 3-celled 71 



69. Calyx 3-lobed. Stamens i — 3 ; filaments free at the top, connective not 



broadened. Ovary 3 — 4-celled. Styles united high up. Fruit a cap- 

 sule. Seeds with a large outgrowth at the hilum. Flowers in panicles. 



— Species 3. Central Africa Maprounea Aubl. 



Calyx 4 — 5-parted. Stamens 2 — 3 ; filaments united into a short column. 

 Anthers turned outwards. Ovary 2 — 3-celled. Fruit a capsule or a 

 drupe. Seeds without an outgrowth 70 



70. Calyx-segments broad. Connective broadened, peltate. Styles united 



high up. Flowers in panicles. — Species 2. Tropics. Omphalea L. 

 Cah^x-segments narrow. Connective not broadened. Styles free or 

 united at the base. Flowers in spikes. — Species 2. Central Africa. 



Excoecariopsis Pax 



