20 



EUiHiouiUACE^E (Brown, Hutchinsou aud Train). 



XXXIir. Adenocline.— Stamens 2-seriate, peripheral. StfjJes slightly connate 



below, Floivcrs in cymules. Ilerhs. 



XXXIV. Oelonmm.—Stamcns central. Stf/les free. Flowers glotnemlate. 



Trees or ahruls, 



§§Styles connate in a column continuous with the body of the carpels ; 



male calys-lobes valvatCj closed in bud, 



XXXV. Plukenetia. — Ovary 4-carpellary. 



XXXVI. Dalechampia, — Orar?/ 3-carpellary, Floivers in den.se involucrate 



headri. 



XXXVII. Ctenomeria. — Orcr?-^3-carpullary. Fknvers in racemes. Stamtm 30 or 



more. 



XXXVIII. Tragia, — Ovar)j 3-carpellary. Floivcrs in racemes or ri2jibes. Stamens 



normally 3. 



JJSepals of male flower open in Inid. 



XXXIX. Maprounea — Calyx-hhcs of male slightly imbricate. Stamens nxona- 



delphous. Seeds caruncled. Spikes very denize, ovoid. 



XL. Spirostachys. — C((?.*/a--Zt>6cs of male slightly imbricate. Stamens xnouii- 



delphous. Seeds not caruncled. Spikes very dense, subcyliudric. 



XLI. Sapium. — Calyx-luhes of male not overlapping. Staniais free. Seeds 



not caruncled. Spfkes rather lax. 



I. SYNADENIUM, Boiss. 





like involucre, with a very spreading or more rarely erect rim-like 

 ghmd outside of ami completely surrounding an inner series of a 

 inflexed-erect membranous suV^uadrate fringe-toothed lol>es ; gland 

 usually entire, occasionally having a cut-like notch on one side or 

 divided by 2-5 cut-like notches into une(]ual or equal segments, but 

 not forming equally-spaced separate glands. Stamens (really male 

 flowers without a perianth, as in EujiJiurhia) arranged in 5 groups 

 contained in 5 compartments with membranous walls opposite the 

 lobes of the involucre. Ovary (really a female flower with the 

 perianth reduced to a rudimentary rim or of 3 minute or rarely 

 well developed conspicuous lobes, as in Euj^Hiorhia) pedicellate, 

 3-celled, often absent ; when present central and its pedicel sur- 

 rouuded by a membranous tube formed by the inner wall of the 

 compartments containing the stamens, lobed and fringed at the 

 top, puberulous; styles 3, united at the basal part ; stigmas biiid, 

 rarely entire. Ovule solitary in each cell, attached to the inner 

 angle at or above the middle of the cell, 



. Shrul^ or small trees, with the young branches fieshy, full of milky juice ; 

 leaves alternate, entire, ex^tipulatCj more or less fleahy, coriaceous when dried ; 

 inflorescence axillary, cymose, cymose -paniculate or umbel-like, with a pair oi 

 fi-ee persistent or deciduous bracts at the base of each involucre and not or 

 scarcely exceeding its rim-like gland. 



DiSTRiB. Species 13, all but the following in Tropical Africa. 



