468 MANUAL OF NATUEAL HISTOEY. 



celled ; stigmas three, sessile ; fruit capsular, 

 3-celled, 3-valved ; embryo curved ; albumen 

 fleshy. Natives of Southern Brazil and of 

 Chili. 



5. Family. — Cacao-plants (Byttneriacese). Trees, 



shrubs, or under-shrubs ; leaves alternate ; 

 stipules deciduous or ; flowers in clusters, 

 spikes, or panicles ; calyx 4-5-lobed ; petals 

 4-5, or ; stamens equal to, or some mul- 

 tiple of, the petals, more or less monadelph- 

 ous, some sterile ; anthers 2-celled, introrse ; 

 ovary of 4-10 carpels ; ovules anatropal ; 

 styles terminal, as many as the carpels ; fruit 

 capsular ; embryo straight or curved ; albu- 

 men fleshy. Chiefly tropical or sub-tropical 

 plants in Asia, Africa, America, and Austra- 

 lasia. The principal plant is the Cacao-tree 

 (Theohroma Cacao), yielding chocolate and 

 cocoa. 



6. Family. — Silk-cotton Plants (Sterculiacese). Trees 



or shrubs ; leaves alternate, stipules decidu- 

 ous ; inflorescence variable ; flowers occasion- 

 ally unisexual ; calyx naked or involucrate, 

 sepals five ; petals five or ; stamens indefinite, 

 perfect, monadelphous ; anthers 2-celled, ex- 

 trorse; pistil of five, rarely three, carpels, dis- 

 tinct or cohering ; ovules orthotropal or ana- 

 tropal ; fruit capsular, follicular, or succulent ; 

 embryo straight or curved ; albumen oily or 

 fleshy. Distribution tropical, extensive. This 

 family boasts of one of the largest trees 



