FLOWERS POLYPETALOUS, 



267 



1 8. Berberides. — Stamens and petals equally numerous. 

 Germen simple, fruit a capsule, or berry, of one 

 polyspermous cell. Embiyo straight, albumen fleshy. 

 Radicle inferior. Lobes plain. Berberis, Epime- 

 dium and Hamamelis are examples. 



1 9. Tiliacece. — Petals alternating with the calycine leaf- 

 lets. Stamens numerous ; filaments distinct. Ger- 

 men simple. Fruit a berry or capsule, polysper- 

 mous. — Embryo enclosed in a fleshy albumen. 

 Leaves alternate, simple and accompanied by sti- 

 pules. Bixa and Tilia are examples. 



20. Cisti.— Calyx five parted.— Petals five. Stamens 

 numerous. Germen simple, surmounted by one 

 style and one stigma. Seeds, valves, and cells of the 

 capsule numerous. Embryo incurved within a slen- 

 der albumen. Stem shrubby or herbaceous. Leaves 

 opposite. Cistus and Helianthemum are examples. 



21. Rutacece.— Stamens usually ten. Germen simple. 

 Fruit composed of many capsules united. Seeds at- 

 tached to the interior angle of the valves. Embryo 

 enclosed in a fleshy albumen. Lobes foliaceous. 

 Ruta and Fribulus are examples. 



22. Caryophyllece. — Calyx tubular. Petals furnished 

 with a claw, and alternating with the calycine seg- 

 ments. Germen simple. Styles and stigmas nu- 

 merous. Capsule polyspermous. Seeds attached 

 to the central receptacle. Embryo incurved, placed 

 around the central farinaceous albumen. Stem her- 

 baceous and jointed. Leaves opposite and connate. 

 Dla?ithus, Holostcum and Silene are examples. 



Class 10. Flowers polypetalous. Stamens peri gynous, 

 Calyx monophyllous. Corolla inserted into the 

 Calyx. In this as in the preceding class, the cha- 



