KEY TO THE ORDERS. XV 



HAMAMELACEJE. Shrubs. Stamens 8 ; styles 2. Flowers 



yellow, in autumn '. . 79 



HALORAGE^:. Aquatics." Stamens 4 or 8. Styles or ses- 

 sile stigmas 4. . ; 79 



ONAGRACE^E. Flowers symmetrical. Stamens 2, 4, or 8. 



Stigmas 2 or 4, or capitate. 81 



MELASTOMACE^E. Anthers 1-celled, opening by a pore at 

 the apex. Stamens 8. Style and stigma 1. Flow- 

 ers purple 84 



LYTHRACE.S. Calyx apparently adherent to, but really 

 free from, the ovary. Stamens mostly unequal. 

 Leaves mostly whorled. Flowers varying as to 

 relative lengths of stamens and style 84 



CtJCURBiTACEJE. Tendril-bearing herbs. Flowers monoe- 

 cious .... 85 



(6) Stamens epigynous (on the ovary, or on a disk which covers 



the ovary). 

 Euonymus, in 



CELASTRACE^E. Shrub, with 4-sided oranchlets, not climb- 

 ing. Leaves simple. Pods crimson when ripe. 

 Calyx not minute 46 



UMBELLIFER./E. Flowers chiefly in compound umbels. 

 Calyx very minute. Stamens 5. Styles 2. Fruit 

 dry, 2-seeded 87 



ARALIACE^E. Umbels not compound ; but sometimes pan- 

 icled. Stamens 5. Styles usually more than 2. 

 Fruit berry-like 92 



CORKAGES. Flowers in cymes or heads. Stamens 4. Style 



1 93 



2. Calyx inferior (i.e. , free from the ovary), 

 (a) Stamens hypogynous (on the receptacle). 



CRUCIFER.E. Petals 4. Stamens 6, tetradynamous. Pod 



2-celled 16 



CISTACE.E. Petals 3. Sepals 5, very unequal ; or only 3. 



Pod partly 3-celled '. 29 



DROSERACE.E. Leaves radical, beset with reddish glandu- 

 lar hairs. Flowers in a 1-sided raceme 30 



Elodes, in 



HYPERICACE^E. Leaves with transparent dots. Stamens 



9, in 3 clusters 30 



