142 LESSONS IN BOTANY. 



8. Stamens 8. Anthers turned inwards. Bannaniads. 187 



8. Stamens 3. Anthers turned outwards. * Irids. \^Z 



8. Stamens 6. * Amaryllids. 140 



9. Pistils many, distinct, achenia in fruit. * Water-plahtaitis. 185 



9. Pistils 3, more or less united 10. 



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



10. Leaves alternate 11. 



11. Stigmas 3. Plants growing on other plants. Bro?neliads. HI 

 11. Stigmas united into one. * Spider worts. Ic2 



12. Leaves net-veined, broad 13. 



12. Leaves parallel-veined 14. 



13. Flowers perfect, 4-parted. Oroomia—Roxburgs. 146 



13. Flowers dioecious, (3-parted. Greenbriers. 145 



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). *Lili/worts. 148 

 15. Flowers colored, irregular, or else 3-stamened. Fontederiads. 150 



15. Flowers greenish, glume-like, or scarious. *Rushes. 151 



16. Leaves rush-like. Ovary of three 1-seeded carpels. * Arrow-grasses. 135 

 16. Leaves linear, lanceolate, &c. Ovary 6- co-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 single oract (giume). Stem solid. Sheaths entire. Sedges. 155 



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



split on one side. Grasses. ■* 56 



