6 FOUIiTDATIONS OP BOTANY 



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

 several days. Leaves netted-veined .... 10. (Trillium) Lily . 29 

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

 Corolla irregular. Aquatic herbs with par- 

 allel-veined leaves 8. Pickerel-weed . 28 



Perianth regular, its divisions all alike, or nearly 



so, petal-lilie 10. Lily 29 



Perianth adnate to the ovai-y. 



Anthers 6 . . . 11. Amaryllis ... 42 



Anthers 3 12. Iris 45 



Anthers 1 or 2 13. Orchis .... 46 



SUBCLASS IL — 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.^ 



Flowers moncBoious or dioecious, one or both sorts in 

 catkins. 

 Staminate flowers in catkins, the pistillate ones soli- 

 tary or clustered. 



Leaves pinnately compound . . 16. Walnut .... 49 



Leaves simple ■ . • ■ 18. Beech .... 55 



Both kinds of flowers in catkins. 

 Leaves alternate. 

 Ovaries in fruit becoming fleshy and combining 



into an aggregate fruit 20. Mulberry ... 61 



Fruit 1-seeded, a stone-fruit or minute nut. Aro- 

 matic shrubs 15. Bay berry ... 49 



Fruit a capsule, seeds with sUky hairs .... 14. Willow .... 47 

 Fruit a minute nut or akene. Mostly large shrubs 



or trees, not very aromatic 17. Birch 51 



Leaves opposite, small parasitic shrubs .... 22, MistletX)e ... 63 



B. 



Flowers not in catkins,bothcalyxandooroUawanting 44. Sycamore. . . 105 



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

 corolla is considered to be missing. 



