EUPiioiiBiAGE.E (Brown, Hutchinson and Piviin). 217 



enclosed in a cup-ahaped, obconic or 4-atigled iiivulucre ; the whole 

 resembling u riinall male or hermaplirodite flower. Omr»j 2-3-celIed, with 

 1 pendulous ovule in each cell. 



I. Synadenium, — Involucre with one continuous rim-likc gland, which is 



quite entire or occasionally with 1-5 cut-like notches dividing it 

 into segmentg, but not forming equally spaced glands. A bushy 

 shrub, with terete spineless iBuccuIent branches and large alternate 



II. El^ophorbia, — -[nrolncre with 5 separate equally spcaced contiguours 



glands. Fruit indehiacent, thickly fleshy, containing one hard 

 3-celled ^' stone," A succulent tree, with angular branches armed 

 with spines in pairs. 



III. Euphorbia. ^//tt'oZwcv't with 2-8 (usually 4-5) t<eparatc and usually 



equally spaced contiguous or distant gland??. FrHit separating 

 into 3 lobes or cells, which open down the inner face to liberate 

 the seeds, not fleshy or but slightly so in a few succulent species. 

 Herbs, shrubs or trees, often succulent. 



Tribe 2. BUXE^E. — Perianth calycine. Segments imbricate or rarely (in extra- 

 African species) absent. Stamens in the African genera 4 or fj. Ovules 2 

 in each cell, rarely solitary ; raphe dorsal. Sti/hs undivided or slightly 

 bifid. Cotyltdons various. Shrubs or trees with opposite entire leaves. 



IV. Buxus. — Stamens 4, opposite the perianth-segments. 



V. Notobuxus, — Stamens 6, two solitary ones opposite the outer perianth- 

 segments, four in pairs opposite the inner segments. 



Tribe 3. PHYLLANTIIE.E.— 5f^)a/5valvate or imbricate in bud, 1-2-scnate. Petafs 



when pi'esent small and scale-like. Stamens 1-2 -seriate, the outer opposite 

 the sepals, rarely indefinite in tlie middle of the flower. Ocufcs 2 in each 

 cell, collateral and usually contiguous ; caruncle usually conspicuous ; 

 raphe ventral. Cotf/Iedt*ns much broader tlian the radicle. Injloresccucc 

 \'arious, axillary, rarely terminal. Habit various. 



^Leatcs opposite ; stiprnJes inti^apetiolar and sheathivf/ ; stamens very 

 numeroaSj arranjed on an el'jn[jatcd rcccptctcle, 



w 



VL Androstachys. — A tall erect tree with dicecious flowers and numerous 



statnens. 



■ 



''"^Leaves alternate or rarely whorled ; stipules neither IntrapUlohtr nor 



sheatliinij : stamens rarely numerous : receptacle not elongated. 



fSepals of the male flowers valvate in bud. 



J 



VII, Bridelia.^F?*Mfe drupaceous. Ovary 2-celIed. Tertiary nerves of the 



leaves usually parallel. 



Mil. Cleistanthus. — Fruits capsular. Ovary 3-celled. Tertiary nerves of 



the leaves not parallel. 



tt^epals of the male flowers unbricate in bud. 

 +Petals present in the male flowers. 



§Flovvers dioecious. Petals larger than the sepals in the male flowers. 

 Disc in the male flowers of sex>arate glands or absent. 



IX. Lachnostylis. — Flowers in axillary' fascicles. Sepals in the male 



flowers 5. Disc-gtands thick, villous. Hudimentary ovary well 

 developed. 



