MONOOOTTLlEDONES. xliii 



Class II. MONOCOTYLEDONES. 



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

 tissue witli 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. Dicttogbn^. Leaves net-veined. Floral 



envelopes whorled 337 



Division 2. Flobid^. Leaves paraUel-veined. Floral 



envelopes whorled or wanting 338 



Division 3. GLirMiFBa.s). Leaves parallel-veined, per- 

 sistent. Floral envelopes rudimentary or wanting. 

 Flowers covered by imbricate bractlike scales 387 



Division 1. DICTYOGENJE. 



80. Trilliacets. Perianth inferior. Fl. perfect 337 



81. Dioscoreaeece. Perianth superior. Fl. dioecious. — 

 Twining plants 337 



Divsion 2. FLORIDiE. 

 * Perianth swperior, petal-Uhe. Syncarpovs. 



82. HydrocharidacecB. Dioecious. Fl. regular. Sep. 

 herbaceous. Pet. coloured. — Floating plants 339 



83. Orchidaceee. Fl. irregular. Stam. 1 — 2, sessile, 

 adnate to central column bearing the stigma 340 



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

 bursting outwards. Ovary 3-celled, 3-valved 362 



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

 Stam. 6, bursting inwards. Ovary 8-celled, 3-valvea . . 365 



** Perianth inferior, apocarpous, or carpels separable 

 when ripe. 



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

 like parts. Stam. 6. Fr. of many carpels 356 



*** Perianth inferior, syncarpous. 



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

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

 creeping 859 



