Mcmihot.] cxxii. eupuokbiace.e (prain). 841 



the middle to the junction with the petiole, margin entire, central largest 

 lobe 4 in. long, 2 in. wide, dark green and glabrous above, paler and rusty- , 

 pubescent beneath; petiole reddish, pruinose, 4-4J in. long; stipules 

 setaceous, tawny-tomentose, deciduous. Racemes elongated, up to 10 in. 

 long, from the forks of the younger twigs ; bracts foliaceous, glabrous, 

 ovate, acuminate, over 1 in. long; bracteoles similar, but smaller, about 

 J in. long; pedicels of males over 1 in. long, of females 2 in. long or 

 longer, thickened in fruit ; flowers ascending, those at the base female, 

 males more numerous and higher up. Calyx 1 in. long or rather less, 

 glabrous outside and within, tubular-cylindric, the male 5-sect nearly to 

 the middle, the female 5-sect rather beyond the middle. Stamens 10 ; 

 filaments glabrous : anthers glabrous. Ovary puberulous or glabrous, 

 ovoid, 6-keeled. Disk glabrous. Capsule ovoid-globose, distinctly 

 6-winged, H-2 in. long, about as wide. Seed suborbicular, compressed, 

 about J in. wide. — Kew Bulletin, 1908, G4 ; Pax in Engl. Pflanzenr. 

 Euphorb.-Adrian. 34, fig. 11, C-H, fig. 15, C-E. M. Glaziovii, var. 

 piauhy, Pobeg. Ess. Fl. Guin. Fr. 353. 



Native of Brazil, rather widely cultivated as a rubber-plant in Tropical Africa. 

 The Piauliy Rubber or Piauby Maiii9obii. 



M. Teis.wnierii, Cbev. in Journ. Agric. Trop. vii. 357 (1907), a Brazilian 

 caoutcliouc-yielding plant, cultivated in French West Africa, iij^rees in all other 

 characters with M. piauhyensis, but differs in having an indehisceiit fruit. On 

 account of this difference the plant has since been treated as the typo of a distinct 

 genus Iloinima, Chev. in Journ. Agric. Trop. viii. Ill (1908), with a single species, 

 H. Teissonierii, Chev. I.e. 



3. M. dichotoxna, Vie in Notizhl. Konigl. Bot. Gart. Berlin, v. 

 No. 41, 2, and 41a, 16, \\),Jig. 1, A-B. Tree, 10-40 ft. high, twigs glab- 

 rous ; stems yielding rubber. Leaves long-petioled, firmly chartaceous 

 or almost coriaceous, not peltate, cordate at the base, some of the upper- 

 most 3-lobed, the others palmately 5-lobed, 6 in. long, 7-8 in. wide : 

 lobes united in their lower fourth, acutely acuminate, mucronulate, some- 

 times all entire, usually the central and intermediate lyrately lobulate, 

 basal lobes entire and much smaller than the central, 2i-5 in. long, 

 1-1 J in. wide, sinuses rounded, broad, glabrous, glaucescent on both 

 sides ; petiole 3-5 in. long, stout, glabrous ; stipules filiform, denticulate, 

 \ in. long. Racemes rather short, 1-1 J in. long, from the forks of the 

 younger twigs ; bracts lanceolate, sharply toothed upwards, \ in. long ; 

 pedicels J in. long or less, the females thickened in fruit ; flowers 

 ascending, those at the base female, males more numerous and higher up. 

 Calyx greenish-yellow, | in. long or less, glabrous outside, sparingly 

 puberulous and densely papillose near the top within, campanulate, 

 male 5-partite to about the middle, female 5-sect almost to the base. 

 Stamens 10 ; filaments glabrous ; anthers glabrous. Ovary glabrous, 

 oblong-ovoid, 6-winged. Disk glabrous. Capsule oblong, narrowly to 

 distinctly 6-winged, \h in. long, 1 in. wide. Seed ovoid, compressed, 

 1 in. long, \ in. wide.— Kew Bulletin, 1U08, 64 ; Hemsl. in Hook. Ic. 

 PI. tt. 2«76, 2877 ; Pax in Engl. Pflanzenr. Euphorb.-Adrian. 83, 

 fig. 11, A-B, fig. 15, F-H. M.j^reciosa, Schindl, MSS. ex Agric. Rep. 



