POLYPETALOUS EXOGENOUS PLANTS. ISO 



Tlieir in'operties are stimulating and slightly narcotic. 

 To this order belongs the Tea Plant of China. 



27. ORANG-E FAMILY. Order, Aurantiace^. 



Trees or shrubSf abounding in little transparent recep- 

 tacles of volatile oil. Leaves alternate, articulated with the 

 petiole, which is frequently winged. 



Flowers regular, 3 or 5. Petals and stamens inserted 

 on a hypogynous disk. Stamens with flat filaments. 

 Fruit a berry, thick rind, many-celled, pulpy. Seeds at- 

 tached to the inner angle of each carpel. Cotyledon thick ; 

 no albumen. 



Orange. Tfie Orange, though not a native, is so con- 

 stantly met luith in oxer gardens that loe give a conspectus 

 of the order, that the student may exercise his hnoioledge of 

 analysis by examining it, 



28. PRIDE OF INDIA FAMILY. Order, Meliace^. 



Trees or shrubs, pinnate, exstipulate leaves. 



Flowers 3 to 5 sepals and petals. Stamens 6-10, coher- 

 ent into a long tube with anthers sessile. Disk hypo- 

 gynous, sometimes cup- like. Style 1. Ovary compound, 

 several-celled, 1-4 ovules. Fruit dry or fleshy. Seeds 

 neither winged nor axillate. 



China Tree. This tree is almost naturalized in many 

 parts of our State. The ivriter has seen it groiuing in the 

 Brazos bottom, far from any habitation; also below Harris- 

 burg, upon Buffalo Bayou. 



29. FLAX FAMILY. Order, Linages. 



Herbs with entire, exstipulate, simple leaves. 

 Flowers regular, symmetrical, and perfect, pentamerous 

 (i. e. 5 sepals, petals, stamens, and styles). Sepals im- 



