Naturalisation in Extra-Tropical Countries. 247 



Guajacum officinale, Linne. 



Antilles and Venezuela. Tree, attaining middle size, but of slow 

 growth. Hardy in Natal, also at Moreton-Bay. Yields the heavy, 

 diagonally fibrous, somewhat odorous, greenish " Lignum Vitae," a 

 wood which is unique in its qualities and much sought for skittle- 

 balls, blocks, pulleys, rulers. The resin is used medicinally and for 

 chemic tests. 



Guevina Avellana, Molina.* (Quadria heterophylla, Ruiz and Pavon.) 



The evergreen Hazel-tree of Chili, extending to the Chonos- 

 Archipelagus. One of the most beautiful trees in existence, attain- 

 ing a height of 30 feet. The snowy-white flower-spikes produced 

 simultaneously with the ripening of the coral-red fruit. In the cooler 

 southern regions the tree attains considerable dimensions. The wood 

 is tough and elastic, and used particularly for boat-building [Dr. 

 Philippi]. The fruit of the allied South- African Brabejum stellati- 

 folium (Linne) can only be utilised with caution and in a roasted 

 state as an article of diet, because it is noxious or even absolutely 

 poisonous in a raw state. 



Guizotia Abyssinica, Cassini. (G. oleifera, De Candolle.) 



Tropical Africa. Rantil-oil is pressed from the seeds of this 

 annual herb, which yields its crop in three months. The oil is much 

 used like Sesamum-oil, for culinary as well as for technic purposes. 

 Madia sativa (Molina), a native of Western America, is purposely 

 excluded from a recommendatory position in this work, as it becomes 

 an irrepressibly troublesome weed. 



Gunnera Chilensis, Lamarck. 



Caraccas to Patagonia, chiefly on cliffs. A most impressive plant 

 for scenic groups in gardens. Darwin measured leaves 8 feet broad 

 and 24 feet in circumference. It thrives luxuriantly at Port Phillip, 

 when somewhat shaded from intense dry heat. Severe frosts affect 

 it in exposed situations. The acidulous leaf-stalks serve as a vege- 

 table ; the thick roots are used for tanning and dyeing. G. peltata 

 (Philippi) is another large species, restricted to Juan Fernandez, 

 G. macrophylla (Blume) is a native of Java and Sumatra, where it 

 occurs on mountains up to 6,000 feet elevation. G. manicata 

 (Linden) is a Brazilian species, allied to G. Chilensis and still more 

 robust [J. G. Baker]. 



Gymnocladus Canadensis, Lamarck. 



The Chicot or Kentucky Coffee-tree. North-Eastern America. 

 A timber- and avenue-tree, attaining a height of 80 feet ; allied to 

 Gleditschia, but as the name implies, thornless. Delights in a rich 

 soil and a sheltered position. Can be raised from cuttings of the 

 roots. The wood is strong, tough, compact, fine-grained, and assumes 

 a rosy colour. The pods, preserved like those of Tamarinds, are 



