366 PHYSIOLOGY AT THE FARM. 



taste of the Cruciferce. Its leaves may be put into salads ; 

 the fruit pickled is used as a substitute for capers. The cater- 

 pillar of the cabbage butterfly feeds exclusively on the Cruci- 

 ferce and Tropceolums. 



Tropceolum tulerosum has tubers, which are eaten in Peru. 

 T. chymocarpus is used in Peru as an antiscorbutic. 

 Pittosporacece, Pittosporum order. The genus Billardiera, 

 which belongs to New Holland, produces berries, which in 

 some species are eatable. Pittosporum mutabile has a very 

 pleasant green subacid fruit. 



Zugophyllacece, Bean Caper and Guaiacum order. Zugo- 

 pliyllum fabago, the bean caper, so called on account of its 

 flower-buds being used as a substitute for capers, grows in 

 Syria. Tribulus terrestris, small caltrops, a native of the south 

 of Europe, is famed for fattening fowls and heightening their 

 flavour; the same is well known in Jamaica as Turkey blos- 

 som. Melanihus major has flowers full of honey, fit for food. 

 Rutacece, Rue order. Correa alba has leaves which afford 

 a kind of tea in Australia. Some other species of Correa are 

 also in use for tea. 



Sub-class Calyciflorce. 1. Polypdalm : Rhamnacece, Buck- 

 thorn order. The genus Zizyplius has in general edible fruit. 

 From Z. jujuba and Z. vulgaris the jujube paste is prepared. 

 Z. lotus affords an edible fruit in use in Arabia. Z. mai- 

 munna is a fruit the size of a currant, of much request in 

 Afghanistan. 



Anacardiacece, Cashew order. Anacardium occidentale, 

 the cashew nut, has a fleshy edible peduncle supporting a nut, 

 the kernel of which can be eaten, while the pericarp is acrid. 



Mangifera indica affords the mango, a highly-prized tropi- 

 cal drupaceous fruit. 



Of the genus Spondias, several species, as S. purpurea and 

 S. mombin, afford edible fruit, called hog plums in the West 



