The natural and forest products of Mexico include the agave and yucca (ixtle) fibres already mentioned; the " ceibon " fibre derived from the silk-cotton tree (Bombax pentandria); rubber and vanilla in addition to the cultivated products; palm oil; castor beans; ginger; chicle, the gum extracted from the " chico-zapote " tree (Achras sapota); logwood and other dye-woods; mahogany, rosewood, ebony, cedar and other valuable woods; " cascalote " or divi-divi; jalap root (Ipomaea); sarsaparilla (Smilax); nuts and fruits.