Iviii DIGECIA. 



ORDER VII. EXOTAKDKIA. 9 Stamens. 



19. MERCURIALIS. Sepals 3 ; petals ; capsule 2- 

 lobed. Herbaceous plants with roughish leaves, bearing 

 small green flowers in loose spikes. SPURGE TRIBE. 

 P. 549. 



ORDER VIII. DECANDKIA. 10 Stamens. 



20. LYCHNIS. Calyx S^cleft ; petals 5. Herbaceous 

 plants, with downy oblong leaves, and large bright- 

 purple or white flowers. PINK TRIBE. P. 87. 



ORDER IX. POLYANDKIA. Many Stamens. 



21. STRATIOTES. Sepals 3 ; petals 3. A curious 

 aquatic plant, with sword-shaped, prickly leaves, and 

 large, white flowers, which grow from a 2-leaved sheath. 

 FROG-BIT TRIBE. P. 579. 



22. POPULUS. Inflorescence in a catkin, the scales of 

 which are jagged. Lofty trees, remarkable for having 

 the upper portion of the leaf-stalk flattened vertically. 

 CATKIN-BEARING TRIBE. P. 565. 



ORDER X. MO^ADELPHIA. 



Stamens united by their filaments into 1 set. 



23. JUNIPER us. Berry formed of the united scales of 

 the catkin, 3-seeded. A shrub with prickly, evergreen 

 leaves, inconspicuous flowers, and purple berries. FIR 

 TRIBE. P. 574. 



24. TAXUS. Seed solitary, half invested with a fleshy 

 cup. A hard- wooded tree, with linear, evergreen leaves, 

 and scarlet seed-vessels. FIR TRIBE. P. 574. 



