ANALYSIS OF THE OKDEKS 



Ul 



85. Fruit flesliy, compound. Juice (sup) milky. Aitocarps 114 



85. Fruit dry (except in Myrica, 121). Sap watery 30. 



36. Aments globular, racemed. Nutlets 2-celled. (Z«jwit/amiar.) Order 

 36. Aments globular, solitary. Nutlets 1-celled. Sycamores 



36. Aments cylindrical or oblong.... 37. 



37. Ovary 1-celled, 1-seeded. Fruit dry or fleshy. Galeworts. 

 37. Ovary 2-celled, 2-ovuled, 1-seeded. * Birchworta. 



62 



117 



121 

 120 



37. Ovary many-ovuled, many-seeded. 



* U'illowworts. 122 



D. Orders of the Conoids. 



Leaves simple. The fertile flowers in cones. Stems branched. Finetcorts. 127 

 Leaves simple. The fertile flowers solitary. Stems branched. Yews. 128 



Leaves pinnate. Stems not branched, palm-like. Cycads. 129 



E. Orders of the Spadiciflor^. 



1. Trees or shrubs with pal mutely- cleft leaves all from one terminal bud, and 



a branching spadix arising from a s-puthe. Falms. 130 



1. Herbs with simple (rarely ternate) leaves. Spadix simple. . . .2. 



2. Plants minute, floating loose on the water. Duchneats. 132 



2. Plants with stem and leaves rooting in the soil 3. 



8. Spadix evident, in a s-pathe or on a scape. * Aroide. 131 



3. Spadix obscure or spike-like. Stems leafy 4. 



4. Flowers with no perianth, densely packed. Cat-tails. 133 



4. Flowers Avith a perianth or not. In water. Kaiad^. 134 



F Orders of the Floride^. 



1. Flowers (not on a spadix) in a small, dense, involucrate head. . .17 

 L Flowers (not on a spadix) solitary, racemed, spicate, &C....2. 



2. Perianth tube adherent to the ovary 4. 



2. Perianth free from the ovary 3 



3. Petals and sepals differently colored (except in Medcola, 147). . . .9 



3. Petals and sepals similarly colored 12. 



4. Flowers imperfect 5. 



4. Flowers perfect . . .6 



5. Low herbs, in water Frogbits. 136 



5. Woody climbers. Yamroots. 144 



6. Stamens 1 or 2, growing to the pistil (gynandrous). * Orchids. 133 



6. Stamen only 1, with half an anther. Airowworts. 131) 



6. Stamens 3 to 6, distinct 7. 



7. Perianth woolly or mealy outside. Ovary half- free. BloOit worts. 142 



7. Puriantli glabrous outside 8. 



