744 cxxii. euphokbiacea: (hutchinson). [Hevea, 



base, 3-8 in. long, 1-3 in. broad, entire, membranous or thinly cliarta- 

 ceous, glabrous on both surfaces, often somewhat glaucous below ; lateral 

 nerves about 20 on each side of the midrib, looped quite close to the 

 margin, distinct on both surfaces, prominent below ; tertiary nerves 

 parallel, numerous, prominent on both surfaces ; stalks of the leaflets 

 :-^-7 lin. long, each provided at the base with a large flat orbicular gland, 

 the glands often contiguous or almost merged into one ; petiole 2^11 in. 

 long, faintly longitudinally sulcate, with a narrow groove on the upper 

 side, glabrous. Panicles several below the tufts of leaves on each young 

 shoot, d-bh in. long ; axis slightly pubescent or glabrous, more or less- 

 angular or sulcate ; lateral l)ranchlets up to 2 J in. long, terminating in a 

 solitary pedicellate female flower, the remaining lateral flowers all male. 

 Male flowers numerous, shortly pedicellate: Buds ovoid, acuminate, 

 tomentellous, about IJ lin. long just before opening. Calyx-lobes 5, 

 narrowly lanceolate, acuminate, subacute, about J lin. long, tomentel- 

 lous on both sides. Disk small, pubescent. Anthers 10, in two series 

 of 5 each on the column ; column obtuse, pubescent. Female pedicel 

 about 2 lin. long, thickened upwards towards the base of the flower. 

 Buds ellipsoid, narrowed to the base, acuminate to the apex, lJ-2 lin. 

 long, densely puberulous. Calyx-tube about I lin. long, puberulous 

 outside, nearly glabrous within ; lobes narrowly lanceolate, tapered ta 

 an acute apex, 2-2 J lin. long, densely puberulous or almost tomentel- 

 lous on both surfaces. Ovary triangular-ovoid, sulcate, tomentellous; 

 stigmas 3, sessile or subsessile, suborbicular, glabrous. Capsule o-lobed, 

 about IJ in. in diam. ; lobes about 1 in. broad, slightly keeled. Seeds 

 broadly oblong or oblong-ellipsoid, about 1 in. long and | in. broad ; testa 

 mottled and speckled, sligntly shining. — Miill. Arg. in DC. Prodr. xv. 

 ii. 718, in Collins, Caout. 1, and in Fl. Bras. xi. ii. 302 ; Engl. Pfl. Ost- 

 Afr. B. 440; Kohler, Mediz. Pfl. iii. with fig.; Der Tropenpflanzer, 

 1808, 271, with fig.; 1905, Beih. No. 1, 7 and 23, with figs.; Hemsl. 

 in Hook. Ic. PI. xxvi. t. 2573, tigs. 1-7 ; Bull. Econ. Indo-Chine, 11)05, 

 C90, Gin, (11)3, with figs. ; Yves Henry, Caoutch. Afr. Ucc. Fr. 11)7, with 

 fig. ; Huber in Bol. Mus. Goeldi, Para, iv. 037 ; Pax in Engl. Pflanzenr. 

 Euphorb.-Jatroph. 121. //. janeirensis, Miill. Arg. in Fl. Bras. xi. 

 ii. 706. Siphonia In-asiliensis, Kunth. in Humb. tt Bonpl. Nov. 

 Gen. et Sp. PI. vii. 171 ; Jussieu, Euph. t. 12, fig. 38, B; Klotzsch in 

 Hayne, Arzneik. xiv. t. 5; Benth. in Hook. Kew Journ. Bot. 1854, 3G9. 

 S. kunthiana, Baill. Etude Gen. Euph. 32(1. 



Native of Brazil ; cultivated in various parts of Africa. 



37. RICINODENDRON, Miill. Arg. ; Benth. et Hook, 

 f. (Jen. PI. iii. 21)7. 



Flowers dia3cious. Petals present. Male flowers : Calyx subglobose ; 

 segments 5, imbricate, unequal. Petals connate into a 5-lobed tube. 

 Disk-glands 5, large, erect, more or Jess ovate. Stamens 10-16; fila- 

 ments central, free, often hairy at the base ; anthers oblong, dorsitixed ; 

 cells paiullel, dehiscing longitudinally. Rudimentary ovary absent. 

 Female flowers : Sepals and petals as in the male. Disk saucer-shaped. 



