142 LESSONS IN BOTANY. 



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



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



8. Stamens 6. * AmaTyllid'S, 140 



9. Pistils many, distinct, aohenia in fruit. * Water-fUtntawm. 135 



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



10. Leaves vertioillate, in I'or 2 whorls. Stigmas 8. * TriUiade. i47 

 10. Leaves alternate .... 11. 



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



11. Stigmas united into one. * Spiderworts. 162 



12. Leaves net-veined, broad 13. , 



l2. Leaves parallel-veined.... 14. 



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



13; Flowers diceoious, 6-parted. " Gfreenbriere, 145 

 14. Styles, and often J;he stigma* also, united into 1.... 15. 

 14. Styles and stigmas 3, distinct. . . .16. 



15, Flowers colored, regular. Stamens 6 (4 in one species). *Z«ij'''""'^'- ^*8 



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



15. Flowers greenish, glume-Bke, or scarioas. *Buslus. 151 



16. Leaves rush-like. Ovary of three 1-seeded carpels. * Arrow-grasses. 185 



16. Leaves linear, lanceolate, &c. Ovary 6- co-seeded. * Melantht. }i9 



17. Petals yellow, small, but showy. Leaves radical. . Xyi'ids, 153 



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



G. Orders op the Gbaminoids, 



Flower with a smgie oraot (giame). Stem solid. Sheaths entire. Sedges. 155 



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



split on one side. Grasses. 156 



