600 



376, illustrated. ■" Ceara Rubber in Portuguese East Africa/'* 



Johnson, in Ball. Imp. Inst. v. 1907, pp. 401-422. The Ceara 



Rubber-Tree in Hawaii, Smith & Bradford, Hawaii Agric. 



Exp. Station, Bull. No. 16, 1908, pp. 1-29, pis. i-iv. " Rubber 



Cultivation in Togoland and German East Africa," Kew Bull. 



1911, pp. 97-100, "Rubber" in The N. Nigeria Gazette, 



Nov. 30th, 1911, Suppl. pp. 317-318. " Manihot Glaziovii," in 



The Whole Art of Rubber Growing, Wieherley, pp. 47-84, with 

 illustrations of Tapping Methods, &c. (The West Strand Pub- 

 lishing Co. Ltd. London, 1911). "Ceara Rubber" in Col. 



Rep. Misc. No. 82, 1912, pp. 285-298.— — "Report on Ceara 

 Rubber from N. Nigeria," Dunstan, in N. Nig. Gazette, July 15th, 

 1913; Suppl. p. 268. 



b 



E 



Manihot piauhyensis, Ule; Fl. Tiop. Afr, VI. Sect. 1, p. 840. 



/7f._Notizbl. Bot. Gart. Berlin, v. 1908, pp. 22 C-H, 

 24 D-E and t, 3 ; Pax in Engl. Pflanzenr* Euphorb. — Adrianeae^ 

 p. 33, f. 11 C-H; p. 44, f, 15 C-E. 



Vernac. nam&. — Piauhy Manitoba (Brazil, Ule). — Piauhy 

 Rubber. 



Native of Brazil (Piauhy). 



The j^eld of rubber from this species as also that from 

 M. dichotoma is considered to be greater than that from 

 31. Glaziovii, A small tree 6-16 ft. high, recommended for culti- 

 vation in light sandy soil. In the native method of tapping 

 a small hole is dug in the ground on one side of the stem and 

 lined with clay ; scratches are then made just above the neck 

 of the root and the latex flows into the Kttle pit .where it 

 coagulates and is collected one or two days later, A cake of 

 from 10-100 grams may be obtained from a single tapping (Kew 

 Bull. 1908, p. 67). 



Manihot utilissima Pohl\ Fl. Trop. Afr. VI, Sect. 1, p. 842. 



111. — Sloane, Hist. Jam. i- t. 85 {Ricinus minor^ &c.), t. 141 

 f. 1 (Radix Bicini Cassada) ; Tussac, Ant. iii. t. 1 {Jatropha- 

 Manihot) ; Desc. Ant. iii. t, 176 {J. Manihot) ; Velloso, FL Flum. 

 X. t. 80 (J. Manihot)', t. 82 (J. stipiiJata)] Pohl, Ph Bras. t. 24; 

 Berg. Charact, t. 24, No. 199; Bot. Mag. t. 3071 {Janipha 

 Manihot) ; Adr. Juss. Tent. Euphorb. t. 10, f . 33 (J. Manihot) ; 

 Mart. FL Bras. xi. pt. 2, t. 65; Bentley & Trimen, Med. PL 

 t. 235; Vidal, FL For. FiHp. t. 83c; Agric. Gaz. N. S. Wales 

 iL 1891, t. 38; Kohler, Med. Pflan. iii; EngL & Prantl, Pflan. 

 iii. part 5, f, 49; Transv. Agric. Journ. ii. t. 24; Safford, Contr. 

 U. S. Nat. Herb. ix. t. 26 {M. Manihot) ; Zippel, AusL Handek 

 Nahrpfl. t. 58; Karst, & Schenck, Veg. bild. i. t. 10 ; \dii. t. 45 ; 

 Bavarian, L' Agric. au Dahomey, f. 10 (Pied de Manioc) ; Pax,. 

 Pas Pflan. Euphorbiaceae-Adrianeae, f. 24. 



Vernac. names, — Rogo (Hausa, Kano, Dudgeon, Dalzid) ; 

 Bara banankou (Valley of the Niger, Dumas) ; Duaday, Bantschi 

 (Gold Coast, Easmon)] [Yuca (West Indies, Central America,, 



