142 LESSONS IN BOTANY. 



8. Stamens 3. Anthdrs turned inwards. Burmaniadt. 137 



8. Stamens 8. Anthers turned outwards. * Irids. 143 



8. Stamens 6. * Amar'yllid*. HO 



9. Pistils many, distinct, aehenia in fruit. * Water-plantains. 137 



9. Pistils 3, more or less united. ...10. 



10. Leaves verticillate, in 1 or 2 whorls. Stigmas 3. * Trilliads. 147 

 10. Leaves alternate. .. .11. 



11. Stigmas 3. Plants growing on other plants. Bromdiatit. 141 



11. Stigmas united into one. * Spider icorta. IcsJ 



i 2. Leaves net- veined, broad 13. 



12. Leaves parnllol-veined .... 14. 



13. Flowers perfect, 4-parted. Oroomia Roxbtirgs. 146 



13. Flowers dioecious, G-parted. * Greenbriers. 136 



14. Styles, and often the stigmas also, united into 1 .... 15. 



14. Styles and stigmas 3, distinct 16. 



15. Flowers colored, regular. Stamens 6 (4 in one species). *LilywoHs. 148 



15. Flowers colored, irregular, or else 8-stamcned. * Pontederiads. 135 



15. Flowers greenish, glume-like, or scarions. *Ruahes. 151 



16. Leaves rush-like. Ovary of three 1-seeded carpels. * Arrow-grasses. 137 



16. Leaves linear, lanceolate, &c. Ovary 6-oo-seeded. * Melanths. 149 



17. Petals yellow, small, but showy. Leaves radical. Xyrids. 153 



17. Petals white, minute, fringed. Leaves radical. Pipeworts. 154 



G. ORDERS OF THE GRAMINOIDS. 



Flower with a smgie oract (giume). Stern solid. Sheatha entire. Sedgcx 1 55 



Flower with several bracts (glumes and polos). Stem hollow. Sheaths . 



split oil one side. Ch-assn 156 



