w 



j 

 840 cxxii. EUPHORBiACE^ (prain). [Manihot. 



petiole above; petiole glabrous, 4-6 in. long; stipules 2-3 lin. long, 

 pale green, ovate-lanceolate, denticulate. Racemes paniculate, from the 

 forks of the younger twigs, panicles pyramidal ; bracts lanceolate, 

 denticulate below, entire higher up, under 2 lin. long ; pedicels about 

 J in. long ; flowers nodding, those at the base of each raceme female, 

 opening some days before the more numerous males higher up. Calyx 

 J in. long or rather longer, glabrous outside and within, campanulate, 

 the male 5-fid, the female 5-partite, green blotched with purple at the 

 base. Stamens 10 ; filaments glabrous, outer longer than inner ; anthers 

 with the connective slightly hairy at the tip. Ovary glabrous, sub- 

 globose. Disk glabrous. Capsule globose, f-f in. across, wingless, 

 plicate-rugose, grey. Seed flattish, J in. long, J in. wide, grey marbled 

 with brown. — Trimen in Journ. Bot. 1880, 821. t. 215; Kew Rep. 

 1880, 17, with plate; Pax in Engl, and Prantl, Pflanzenfam. iii. 5, 79, 

 fig. 48 ; Kew Bulletin, 1898, 1 ; De Wild. Miss. E. Laurent, 134, fig. 

 17-21, and Etudes Fl. Bas- et Moyen-Congo, i. 278 and ii. 287 ; Dawe, 

 Miss. Bot. Uganda, 5G ; Th. k Hel. Durand, Syll. Fl. Congol. 490; Pax 

 in Engl. Pflanzenr. Euphorb. -Adrian. 89, fig. 31. Manihot s;;.. Pax in 

 Ann. Istit. Bot. Roma, vi. 185. 



Native of Brazil, widely cultivated as a rubber-plaiit in Tropical Africa. The 

 Ceara Rubber or Mani(,'oba. 



The figure in the Kew Report for 1880 is a reproduction, that of the PHanzun- 

 faniilieii repeated in the Rtlanzenreich is an adaptation of the original drawing 

 made by Fitch for Trimen. 



Var. alienigena, Prain. Slirub or small tree, 10-12 ft. high; yielding rubber. 

 Leaves long-petioled, meinbranou?, peltate, some of the uppermost entire, the 

 others palmately 3-5-lobed, 3-4 in. long, when entire 1 in., when lobed 4-5 in. 

 wide ; lobes wide-spathulate, rounded or subacute with a long terminal mucro, 

 separated by wide rounded sinuses, their margins entire, the basal pair almost 

 borizontal, central largest lobe 2-3 in. long, 1-1 A in. wide, very glaucous beneath. 

 Calyx white, blotched with })urple at the base. C^apsule globose, -^-g in. across. 



Mozamb. Dlstr. Mozambicpie: Buzi district, Lusitania estate, cultivated, 

 Johnson, 67 ! 



Donbtless also inii)ortcd from Brazil. .Johnson notes that this is "(piite distinct 

 from M. Glaziovii," with drooping branches, wliite female flowers with purple 

 marks inside, only growing to about one-fouith the size of M. Glaziovii, with 

 smaller trunk, leaves and fruit, and with thinner leaves of a paler green. The wide 

 sinuses, whereby the lobes of the leaves, instead of being in contact or overlapping in 

 their lower third, are separated from each other by interspaces ^-'^ in. across, 

 impart a distinct facies to the foliage. But excei)t as regards its smaller size, 

 var. alienigena does not otherwise differ essentially from M. Glaziovii. The seeds 

 are sa'd to have been received nloncr with a consignment of seeds of M. Glaziovii 

 supi)lied to the Lusitania estate by Messrs. Vilmorin, Audrieux k Cie. 



2. M. piauhyensis, Ule in Notizhl. Konigl. J Jot. Gart. Berlin, v. XoAl, 

 2, and No. 41a, 18, 23,>V. 1 C-II,Jig. 2 C-E. Shrub, H-16 ft. high ; twigs 

 tawny-tomentose, soon glabrou.s ; stems yielding rubber. Leaves long- 

 petioled, firmly membranous or chartaceous, not peltate, some of the 

 uppermost occasionally 3-lobed, the others palmately 5-7 -lobed, 4 in. 

 long, 7-8 in. wide ; lobes free almost at the base, obovate-cuneate, obtuse 

 or slightly retuse, very distinctly mucronulate, gradually narrowed from 



