b FOUNDATIONS OF BOTANY 



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

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

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

 Corolla irregular. Aquatic herbs with par- 

 allel-veined leaves 8 . Pickerel-weed . 28 



Perianth regular, its divisions all alike, or nearly 



so, petal-like 10. Lily 29 



Perianth adnate to the ovary. 



Anthers 6 11. Amaryllis. . . 42 



Anthers 3 12. Iris 45 



Anthers lor 2 1 3> Orchis .... 4(5 



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 



A. 



Flowers monoscious or dioecious, one or both sorts in 



catkins. 



Staminate flowers in catkins, the pistillate ones soli- 

 tary or clustered. 



Leaves pinnately compound ig. "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. Bayberry ... 49 



Fruit a capsule, seeds with silky hairs .... 14. "VVillow . 47 



Fruit a minute nut or akene. Mostly large shrubs 



or trees, not very aromatic 17. Birch 51 



Leaves opposite, small parasitic shrubs .... 22. Mistletoe . 63 



B. 



Flowers not in catkins, both calyx and corolla wan ting 44. Sycamore. . . 105 



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

 corolla is considered to be missing. 



