XVI KEY TO THE ORDEBS. 



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

 bottom of the cell. Stem usually swollen at the 

 joints. Leaves opposite 32 



Linages. — Stamens 5, united below. Pod 10-oelled, 10- 



seeded ^0 



GERANiACEiE. — 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 



OxALiDACE^. — stamens 10. Pod 5-celled. Styles 5,. dis- 

 tinct. Leaflets 3, obcordate, drooping at night-fall. 42 



EEICACB.E. — 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 



RuTACE^. — Shrubs, with polygamous flowers and leaves 

 of 3 leaflets, dotted with transparent glands. 

 Stigmas 2. Fruit a 2-seeded samara winged al! 

 round ' 43 



(b) Stamens perigynous (plainly attached to the calyx). 



Saxifragace^.— Leaves opposite or alternate, without 

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

 Carpels fewer than the petals 75 



CKASSULACEiB. — Flowers symmetrical. Stamens 10 or 8. 



Leaves sometimes fleshy 78 



LYTHRACE.a;. — 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.E. — Trees, or shrubs, not prickly. Leaves 



compound. Stigmas 3. Fruit a 1 -seeded drupelet. 43 



CELASTRACE.3B. — Twining shrub. Leaves simple. Pods 



orange when ripe 46 



; SapindacB/B. — Shrubs, or trees. Fruit 2-wiuged, and leaves <, 



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



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



(d) Stamens attache^ to the petals at their very base. 



Claytonla, in 



PoKTULACAOE^. — Sepals 2. Leaves fleshy. Style 3-cleft. 37 

 AQHii'OLiACE.a;. — Shrubs, with small axillary flowers, hav- 

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

 like drupe. Stigma sessile. Calyx minute .... 145 



