ROSALBS. 



531 



Africa. Some of tlie latter bear edible fruits. The bark of Brazilian 

 trees of the genera Licania and Couepia is said to contain such consid- 

 erable quantities of silica, that it is burnt by the natives and used in 

 the manufacture of pottery. 



Order Leguminosse. — The Pulse Family. Herbs, shrubs, and 

 trees, with alternate and usually compound leaves ; flowers for the most 

 part zygoiuorphic ; stamens usually twice as many as the petals ; pistil 



FiQS. 480-6.— Illustkations or Papilionackje. 

 (480-5, Lathyrua odoratm.) 



Pia. 484. 



Fig. 480.— Section of flower. Magnified. 

 Ml'. 482.— Calyx. Magnified. 

 Pig. 484.— Ripe fruit. 



Fig 488.— Section of seed of Tetragonololms. Magnifled. 



Fig. 486. 



Fig. 481.— Diagram of flower. 



Fig. 48-3. — Stamens and pistil Mag. 



Vhj. 485.— Part of fruit, wiUi a seed. 



A 



monocarpellary and free ; seeds generally wanting: 3B endosperm 

 vast order of 6500 species, distributed throughout the world. 



The species are usually disposed in three sub-orders, each containing 

 many tribes. 



Sub-Order I. PaplUonaceee, with zygomorphie flowers ; sta- 

 mens generally ten, monadelphous or diadelphous. This sub-order 

 contains a large number of plants of great economic importance. 



'X:\\e food plants inclu>ie the Pea {Pimm sativum), the so-called English 

 Bean ( Vicia faba), the Pole Bean {fhaseolus vulgaris), the Field Bean 



