XVI KEY TO THR ORDERS. 



Caryophyu.ace^. — Styles 2-5. Ovules in the centre or 

 bottom of the cell. Stem usually swollen at the 

 joints. Leaves, opposite 32 



LiNAOE/E. — Stamens 5, united below. Pod 10-oelled, 10- 



seeded f.-. 40 



Oeraniace^. — Ovaries or lobes of the ovary 5 or 3, with 

 a common central style or axis which remains 

 after the ripe ovaries separate from it 41 



OxAMDACE^. — Stamens 10. Pod S-celled. Styles 5, dis- 

 tinct. Leaflet 3, oboordate, drooping at night-fall. 42 



Eetcace^. — Anthers opening by pores at the top, or across 

 the top. Leaves mostly evergreen, sometimes 

 brown beneath ; but in some instances the plant - 

 is white or tawny 137 



EuTACE.*;. — Shrubs, with polygamous flowers and leaves 

 of 3 leaflets, dotted with transparent glands. 

 Stigmas 2. Fruit a 2-seeded samara winged all 

 round 43 



(h) Stamens perigynous f plain Ip attached to the calyx). ^ 



SaxieeaoacEj*;. — Leaves opposite or alternate, without 

 stipules. Styles or stigmas 2 ; in one instance 4. 

 Carpels fewer than the petals 75 



Ceassulaoe^. — Flowers symmetrical. .Stamens 10 or 8. 



Leaves sometimes fleshy 78 



LyTHiiACE.E. — Stamens 10, in two sets. Calyx enclosing, 

 but really free from, the ovary. Leaves mostly 

 whorled 84 



(c) Stamens attached to a fleshy dish in the bottom of the calyx-tube. 

 Anacardiace^. — Trees, or shrubs, not prickly. Leaves 



oorilpound. Stigmas 3., Fruit a 1 -seeded drupelet. 43 

 CELASTRACEiE. — Twining shrub. Leaves simple. Pods 



orange when ripe 46 



•SapindacE/E.— Shrubs, or trees. Fruit 2-wingcd, and leaves 



palmately-veined. Or, Fruit an inflated 3-celled 



pod, and leaves of 3-leaflets. Styles 2 or 3 47 



{d) Stamens attached to the petals at their very base. 

 Claytonia, in 



PoRTULACACE^.— Sepals 2. Leaves fleshy. Style 3-oleft. 37 

 Aquieoliaob^.— Shrubs, with small axillary flowers, hav- 

 ing the parts in fours and sixes. Fruit a red berry- 

 like drupe. Stigma sessile. Calyx minute 145 



