XXXVI 



INTKODUCTION. 



Ovule^nd seed solitary. Leaves stipulate. 

 Stipules sheathing. Leaves alternate. 

 Stipules Bcarioua. Leaves opposite. 

 Stipules not sheathing- nor scarious. 

 Flowers perfect Acnenium 2-lobed, spiny. 

 Flowers imperfect. 

 Serbs. Stems twining. Leaves 3 - 5-lobed. 



Stems not twining. Leaves serrate or entire. 

 Trees or shrubs. 



Juice watery. Flowers single or clu.-tero.l. 

 Juice milky. Flowers included in a fleshy receptacle 

 Ovule and seed solitary. Leaves without stipules. 

 Stamens more numerous than the calyx-lobes. 

 Anthers opening by valves. 

 Anthers opening lengthwise. 

 Calj x 5 - 6-parted. 

 Calj x entire. Berry oval. 

 Stamens equalling in number or fewer than the calyx-lobes. 

 Flowers with scarious bracts. 

 Flowers without scarious bracts. 

 Calj x corolla-like, plaited. 

 Calyx herbaceous. Styles 2. 

 Ovary 2 - 12-ceUed. 

 Leaves whorled 



A heath like shrub Calyx of imbricated scales. 

 A prostrate annual. Calyx corolla-like. 

 Leaves opposite 



Fruit a single samara. Calyx minute, persistent. 

 Fruit a double samara Calyx deciduous. 

 Fruit a drupe. 



Flowers perfect. Stamens on the calyx. 



Flowers dioecious. Stamens hypogynous. 

 Fruit a many-seeded capsule. Herbs. 

 Leaves alternate 

 Ovules and seeds 1 - 2 in each cell. 



Flowers mono-dioecious. Fruit a drupe or capsule 



Flowers polygamous Capsule 8 1 winged. 



Flowers perfect or polygamous. 

 Fruit a berry. Calj x colored. 



Fruit a samara. Leaves stipulate. 



Ovules and seeds numerous In th< cells. 



Capsule 8-celled Flowers solitary. 

 Capsule 5-celled Flowers cyniose. 



POLYGONACEJE 

 LLLEOEBRR& 



381 

 45 



rETlYERIE.V.. 874 



CANNABINA('i:.F„ 

 l in it \< i; .;:. 



ULMACEiE, 



Mokau: i;. 



414 



ill 



iif. 



in 



laurace.t:, 898 



POLYGON U'K E, 

 TUYMELKACK.K, 



884 



395 



AMAKANTAi i: 1. 878 



NYCTAGINACE E 



CUEXOl'ODlACK.i:. 



EMPETKA'T.l'.. 

 MOLLL'lilXE.E. 



375 



no 



45 



FRAXim: l . 

 ACEKACK.i:. 



RHAMNAi K.V.. 



FORES! 



LYT1IKAI T..F. 



Si, 



72 

 133 



EUPII0K1 I \> ! 



8APINDACE E, 7v 



PHYTOLACCA! I 



l i.mai i: r I h; 

 Capsule circumscissile. 



POET1 LACACE r. r; 

 CRASS! I. \' ii n 9 



Subclass II. GYMNOSPEBMOUS EXOGENOUS PLANTS. 



Ovules naked (nol contained in an ovary), supported by an open Bcale 

 or leaf, or else terminating a branch, and fertilized by the direel applica- 

 tion of tin' pollen. 



Stem branchii Imple. 



I innate. 



CONIFERffl 161 

 I'V. \ i « \ < ii . 187 



