6 KEY AND FLORA 



Styles or stigmas 3, separate. Petals 3, lasting FAMILY PAGE 



several days. Leaves netted-veined . . 10. (Trillium) Lily . 30 

 Style 1, stigma 3-lobed or 6-toothed. 

 Corolla not actinomorphic. Aquatic herbs 



with parallel-veined leaves 8. Pickerel Weed . 28 



1 1 1 Perianth actinomorphic, its divisions all alike 



or nearly so, petal-like 10. Lily .... 30 



** Perianth not hypogynous. 



Anthers 6 11. Amaryllis . . 43 



Anthers 3 12. Iris .... 45 



Anthers 1 or 2 13. Orchis ... 47 



SUBCLASS II. DICOTYLEDONS. Flowers usually with their parts in 

 fives or fours. Leaves netted-veined. Cotyledons 2. 



I. Apetalous Division. Flowers without a corolla or without either calyx or 

 corolla. 1 



Flowers monoecious or dio3cious, one or both 

 sorts in catkins. 



(1) Staminate flowers in catkins, the pistillate ones 



solitary or clustered. 



Leaves pinnately compound 16. Walnut ... 52 



Leaves simple . 18. Beech. ... 68 



(2) Both kinds of flowers in catkins, 

 (a) Leaves alternate. 



Ovaries in fruit becoming fleshy and com- 

 bining into an aggregate fruit . . 20. Mulberry . . 64 



Fruit 1-seeded, a drupe or minute nut. 

 Aromatic shrubs 15. Bayberry . . 51 



Fruit a capsule, seeds with silky hairs . . 14. Willow ... 48 



Fruit a minute nut or akene. Mostly large 



shrubs or trees, not very aromatic . . 17. Birch .... 54 

 (6) Leaves opposite, small parasitic shrubs . . 23. Mistletoe ... 68 



B 



Flowers not in catkins, both calyx and co- 

 rolla wanting 45. Sycamore . .113 



1 When only one floral envelope is present, this is said to be the calyx and 

 the corolla is considered to be missing. 



