Class II. — Monocotyledons. 



II. A CHLAMYDEM {calyx and corolla absent). 



70. Salicaceae. 



(Willow Family). Trees with alternate stipulate leaves "and dioecious 

 flowers in catkins. 



68. Cupuliferae. 



(Beech Family). Trees or shrubs with alternate stipulate leaves and 

 monoecious or dioecious flowers. Staminate flowers in catkins. 

 Fruit with a cuplike involucre. 



69. Betulaceae. 



(Birch Family). Trees or shrubs with alternate stipulate leaves and 

 monoecious flowers. Fruit without involucre. 



71. Myricaceae. 



(Sweetgale Family). Fragrant shrub with alternate exstipulate leaves. 



72. Coniferae. 



(Pine Family). Trees with naked ovules. 



Class II.— MONOCOTYLEDONS. 



Stem, with isolated vascular bundles, leaves usually parallel-veined. Parts 

 of flowers arranged in a ternary ( %l) manner. Embryo with one seed-lobe, 

 or Cotyledon. 



A — Petaloideae 



(Perianth petaloid — usually brightly coloured). 

 * Perianth superior. 



80. Hydrocharidaceae. 



(Frogbit Family). Water plants. Flowers usually conspicuous. 



73. Orchidaceae. 



(Orchis Family). Perianth irregular. Stamens and style in one. 

 Ovary I -celled. 



74. Iridaceae. 



(Iris Family). Perianth regular. Stamens 3. Ovary 3-celled. 



75. Amaryllidaceae. 



(Snowdrop Family). Perianth regular. Stamens 6. Ovary 3-celled. 



78. Dioscoraceae. 



(Bryony Family). Climbing shrubs with monoecious inconspicuous 

 flowers. Leaves with netted veins. 



** Perianth inferior or wanting, 

 t Carpels free. 



81. Alismacese. 



(Flowering-rush Family). Marsh or water herbs. Flowers perfect. 

 Stamens 6. Carpels many. 



