PETALOIDE^. . 421 



88. HYDROCHARiDACEiE. Stamens free from the style. Three outer 

 segments of the perianth herbaceous. — Floating plants. 



90. Ikidace^e, Elowers perfect. Stamens 8, free from the style ; anthers 

 extrorse. Perianth wholly petaloid. 



. 91. Amaryllidace/E. Flowers perfect. Stamens 6, free from the style ; 



anthers introrse. Perianth wholly petaloid. 



** Leaves with netted veins. 



^ 



92. DioscoREACEJE. Stamens and pistils in separate flowers. 



in, ; 11. Ovari/ superior, free, not adnate with the perianth. 



* Flowers perfect, containing both stamens and pistils, and with a perianth, 



•f Carpels and sti/les consolidated. Anthers introrse. 



94. LiLiACE^. Perianth petaloid, conspicuous. Flowers scattered. 

 103. Orontiace.e. Perianth herbaceous and scale-like. Flowers on a 



spadix. Fruit baccate. 



97. Juncace.e. Perianth usually dry and scariose, sometimes herba- 

 ceous and petaloid, but becoming dry when withered. Flowers 

 scattered. Friut capsular. 



Y 



tt Carpels united or distinct. Stales distinct, or none and the stigmas 



distinct. 



X Leaves reticulated with branching veins. Fruit succulent, many-seeded. 



93. Triixiace.e. Leaves not articulated with the stem. Stem simple, 

 1-flowered. Flowers perfect. Outer 3 sepals or all herbaceous.i 



XX Leaves with parallel longitudinal nerves, connected by simple transverse 



veins. 



. 95. Melanthace^. Anthers extrorse. Cells of ovary and fruit many- 

 seeded. — Terrestrial plants. 



98. Butomace.e. Anthers introrse. Cells of ovary and fruit many- 

 seeded. — Water plants. 



99. Alisjlvceve. Perianth conspicuous, 3 inner segments highly de- 

 veloped and petaloid. Ceils of ovary and fruit 1— 2-seeded.— 

 Water plants. • 



100. JuNCAGiNACE.E. Perianth inconspicuous; all the sepals similar, 



herbaceous or scarcely petaloid. Lower floAvers stalked. Cells of 

 ovary and fruit 1— 2-seeded.— Marsh plants, but neither sub- 

 merged nor floating. 



105. NAiADACEiE. Perianth inconspicuous ; sepals all scale-like, cuneate 



at the base. Flowers all sessile, on a common peduncle; cells of 

 ovary and fruit 1-seeded. — Submerged or floating plants. 



Flowers imperfect (stamens and pistils in separate flowers') or without a 



perianth. 



105. Naiadace^e, Spadix thin or wanting. Spatha none or similar to 



anM^"*^^^i^"^ -SmZ/flct'^, to which the Sarsaparilla belongs, the leaves are stalked 

 la jointed with tbe stem, stem branched, many-flowered, flowers imperfect, sepals 

 1 petaloid, and the connectivum of the anthers is never prolonged beyond the cells. 



the 1 imperfect-flowered Liliaccce they principally differ by the structure of 



■wea. 





