FLOWERS MONOFETALOUS, 



261 



shrubby. Leaves alternate and undivided. This 

 order embraces milkj plants, of which Bumelia is 

 the only American example. 



Class 5. Flowers Monopetatous, Corolla Perigynous. 



I. Guaiacance.— Stamens adhering to the Coroila, 

 Fruit a capsule or berry of several moDCSpennous 

 cells. Embryo in a fleshy albumen. This order 

 embraces trees and shrubs, with alternate leaves 

 and axillary flowers. Halesia, Hopea, and Siyrax are 

 American genera. 



>. Khododendra. — Calyx persistent, five-parted. Sta- 

 mens determinate, inserted into the corolla, or at- 

 tached to the base of the calyx. Germen superior. 

 Capsule many-valved, each valve by the introflexion 

 of its margins, constituting a polyspermous cell. 

 This order embraces shrubs with alternate leaves 

 and splendid flowers, most of which are natives of 

 the United States. Kalmia, Azalea, Rhododendrum 

 and Rhodora are of the number. 



3. Erica*. — Stamens adhering to the base of the corol- 

 la or inserted into the calyx. Anthers crested. 

 Fruit a capsule or berry, having numerous polysper- 

 mous cells. Arbutus, Andromeda, Clethra and Pyrola 

 are common examples. 



1. Campanulacece. — Calyx persistent. Corolla attached 

 to its summit. Stamens usually five, inserted below 

 the corolla. Capsule polyspermous. Cells numer- 

 ous, opening by lateral pores. Campanula and Lo- 

 belia are referred to this order. 



Class 6. Flowers monopetatous. Corolla epigynous. 

 Anthers connate. This class embraces the com- 

 pound flowers and is subdivided into three orders, 

 distinguished by the structure of the florets, 



