EUPHORBIACE^. 



153 



in 1738, dietinguislied. it in his Fragmenta Methodi Naturalis, under 

 the name of Tricoccce, wliioh it has kept till now. B. de Jussietj, 

 in 1759, in the garden of Trianon, allowed a class of Euphorliece^ 



leaves. Flowers in axillary and terminal dioecious 

 fasciculate racemes. — 1 species from Jamaica; M. 

 glohosa Gbisee. — Croton glohosus Sw. Prodr. 100. 

 — Sicinus globoaua'W. Spec. iv. 567. Belongs to the 

 . series of the Sippomanea (M. Akg. Prodr. 1255). 



14. Phyllobotryum M. Akg. in Flora (1864), 

 524 ; Prodr. 1231. — H. Bn. in Adaitsonia, xi. 

 137). United by Muelleu to the Sippomaneie- 

 JiuphorUacea, and described as dioecious, this 

 genus must have polygamous flowers, for we 

 have observed one having a young gynseceum, 

 whose ovary was surmounted by a style with 

 three small stigmatiferous lobes. Its pauciovu- 

 late placentas, three in number, being parietal, 

 the genus should, perhaps, be separated from 

 the Euphorliacew and joined to the Bixacece 

 or Saxifragucece. The apetalous male flowers 

 have five or six imbricated sepals, surrrounded 

 by two or three analogous leaves, which have 

 been described as forming an involucre. The sta- 

 mens, of indefinite number, inserted on a flat or 

 slightly convex receptacle, are formed of a free 

 upright filament, surmounted by a coloured 

 connective whose edges bear the cells of the 

 anther, nearly triangular, with longitudinal in- 

 trorse dehiscence. A rudimentary gyn»ceum, 

 with two or three apiculate projections, may 

 exist in the male flower. P. spatAtilatttm, the 

 only known species of the genus, is a tree from 

 western tropical Africa. Its alternate leaves 

 are in fact spathulate, petiolate, accompanied 

 by two stipules. The flowers are epiphyllous, 

 the axis |of the axillary inflorescence, which 

 bears a pauoiflorous oyme, being raised with the 

 upper surface of the petiole and a portion of the 

 upper surface of the limb. 



15. Phylhxyhn {S.. 'Bs. in. Adansonia,n. 5i). 

 Male flowers with 3 imbricated sepals and 

 3 imbricated petals. Stamens 6, on 2 verticils. — 

 Shrub, from Mauritius, with cladodes of Xylo- 

 phylla, aphyllous, with flowers in axiUary, amen- 

 tiform spikes. Female flower. . . . ? (Santa- 

 lacese ? M. Akg. Prodr. 1256). 



16. Pretoria (H. Bn. EiiphorUtte. 478 ; — 

 Croton ineanum Bl.). Urticaceae of the genus 

 Fipturus (M. Akg. Prodr. 1260). 



17. Segnaldia (H. Bn. in Adansonia, i. 187, 

 t. 7, fig. 7, 8). A shrub from Ceylon, with 

 alternate leaves and numerous male flowers in 

 axillary cymes. Calyx of 4 imbricated sepals. 

 Androceum column surrounded by a circular 

 disk, surmounted by a rudiment of the pistil, 

 and bearing below its two 4-merous verticils^ 

 of stamens. Female flowers. . . . ? A genus 



VOL. V. 



probably allied to Securinega, Drypeies, etc. 



18. Syparia (Bi. Bijdr. 600.— H. Bn. Muphor- 

 liiae. 339). A genus whose male flowers are un- 

 known to us. JJ. Casta (^Aspidandra Hassk. 

 Oat. Sort. Bog. ed. nov. 47) wiU be, perhaps, an 

 Artocarpad (M. Akg. Prodr. 1258). It seems 

 to be more probably a Bixaoeee, closely allied to 

 Osmelia and Lunania of the series of Samydaceee 

 (see Hist, de Plantes, iv. 307, 308). 



19. Steleohanteria (Dttp.-Th. et H. Bn. in 

 Adansonia, iv. 147). Male flowers arranged in 

 small clusters on the stems. Trimerous imbri- 

 cated calyx. Stamens 4, 5, with introrse an- 

 thers, filaments inserted outside a large, urceo- 

 late, monophyUous disk, of the same height as 

 the calyx, contracted towards its superior open- 

 ing, and having unequally out edges. Female 

 flowers . . . ? Plant from Madagascar [Buphor- 

 biacea ? biovulate ?) 



20. Seeretania (M. Arg. Prodr. 227). Male 

 flower with four sepals and four alternate petals, 

 four oppositipetalouB stamens, with introrse an- 

 thers inserted round a rudiment of gynseceum. 

 Female flower. . . ? Tree from G-uiana {S. 

 loranthacea), with alternate leaves, loaded with 

 short, ferruginous hairs, and male flowers in 

 compound racemes. Placed in Prodi-omus near 

 Soma, and perhaps allied to the polypetalous 

 Myrsinacece (H. Bn. in Adansonia, xi. 137). 



21. Tetragyne (Mia. Fl. Ind.-Bat. Suppl. i. 

 463). Female flower : calyx 5-phyllous. Ovary 

 with 4 cells, 1 ovulate (or with 2 cells 2 ovulate?) 

 Stigmata 4, linear. Ligneous plant from Sumatra 

 (^T. acuminata), yrith alternate leaves and axile 

 flowers (Jporosa ? M.. Ana. Prodr. 1254). 



22. Trisyngyne (H. Bn.- in Adansonia, xi. 136). 

 Monoecious apetalous flowers, male with mem- 

 branous, gamophyllous, tubular, obconioal calyx, 

 and 4, 5 valvate teeth. Stamens ■» , with very 

 slender, central, free filaments, and basifixed 

 subapiculate, introrse, linear anthers. Female 

 flower (incompletely known) accompanied by 

 two small leaves (sepals?). Ovary with two 

 uniovulate cells. Style thick, upright, bifid 

 and stigmatiferous at the apex. Trees from 

 New Caledonia, with simple, penaiaerved, alter- 

 nate leaves. Numerous flowers growing out of 

 an axillary or lateral shoot, the male disposed 

 in cymes, inserted in the axU of a scarious 

 scale ; the female arranged higher on a small, 

 rigid axis in 3-flowered glomerules, compressed 

 together, accompanied by glanduhferous bracts 

 and bractlets in the axils, and two compressd 

 glands, lateral to each glomerule. 



X 



