MONOCOTYLEDONES. 



Class II. MONOCOTYLEDONES. 



^ Stem not separable into bark, wood, and pith; of cellular 

 tissue with vascular bundles embedded irregularly in it. Leaves 

 mostly alternate and sheathing, with parallel simple veins con- 

 nected by smaller transverse veins, rarely net-veined. Coty- 

 ledon one, or, if more, alternate. Floral whorls composed of 

 3 or 6 parts. 



Division 1. DICTYOGEN^:. Leaves net-veined. Floral 



envelopes whorled 392 



Division 2. FLORIDA. Leaves parallel-veined. Floral 



envelopes whorled or wanting 393 



Division 3. GLTIMIFER^E. Leaves parallel-veined, per- 

 sistent. Floral envelopes rudimentary or wanting. 

 Flowers covered by imbricate bractlike scales 446 



Division 1. DICTYOGEN^E. 



80. Trilliacea. Perianth inferior. Fl. perfect 392 



81. Dioscoreacece. Perianth superior. Fl. dioecious. 

 Twining plants 393 



Division 2. FLOBID^E. 

 * Perianth superior, petal-like. Syncarpous. 



82. Hydrocharidacece. Dioecious. Fl. regular. Sep. 

 herbaceous. Pet. coloured. Floating plants 394 



83. Orchidacea. Fl. irregular. Stam. 1 2, sessile, 

 adnate to central column bearing the stigma 395 



84. Iridacece. Fl. regular, of 6 petal-like parts. Stam. 3, 

 bursting outwards. Ovary 3-celled, 3-valved 407 



85. Amaryllidacece . Fl. regular, of 6 petal-like parts. 

 Stam. 6, bursting inwards. Ovary 3-celled, 3-valved . . 410 



** Perianth inferior, apocarpous, or carpels separable 

 when ripe. 



86. Alismacea. Perianth of 3 sepal-like and 3 petal- 

 like parts. Stam. 6. Fr. of many carpels 411 



*** Perianth inferior, syncarpous. 



87. Asparagacece. Perianth petal-like. Stam. 6 or 4 

 or 8; anth. bursting inwards. Fr. a berry. Rhizome 

 creeping 414 



