Buxaceae, Celastraceae 



65 



Suborder i. BuxiNEAE. Flowers haplochlamy- 

 deous. Ovules with two integuments. 



Fam. I. BUXACEAE. Woody plants. Leaves tnt'wQ, 

 evergreen, exstipulate. Floivers diclinous, sometimes 

 with rudiments of the aborted sporophylls, actino- 

 morphic. Stamens 4-00 . Carpels usually (3) each with 

 2-1 ovules. Styles separate. Fruit a loculicidal capsule 

 or drupe. Seeds with endosperm. 



Only British genus (leaves opposite) : Buxus. 



Suborder 2. Empetrineae. Floivers heterochlamy- 

 deous. Each carpel with one ascending ovule with one 

 integument. Carpels not separating when ripe. 



Fam. 2. Empetraceae. Ericoid shrubs with linear 

 exstipulate leaves deeply furrowed beneath. Flowers 

 diclinous with rudiments of the aborted sporophylls, 

 actinomorphic. K, C and A 2-3. G (2-9). Fruit a drupe. 



Only British genus (leaves spiral, stamens 3) : 



Empetrum. 



Suborder 3. Celastrineae. i^/<?z£'^ri' heterochlamy- 

 deous, always actinomorphic, diplostemonous or haplo- 

 stemonous. Gynaecium tending towards oligomery, 

 rarely isomerous. 



Fam. 3. Aquifoliaceae. Trees with spiral, mostly 

 evergreen, simple leaves. Flowers 4-5-merous, dioecious, 

 actinomorphic. Disc absent. Petals often connate at 

 base and adnate to the isomerous stamens. Carpels 

 (4-6) each with 1-2 pendulous ovules with one integu- 

 ment. Fruit a drupe. 



Only British genus (petals connate at base) : Ilex. 



Fam. 4. Celastraceae. Trees or shrubs with 

 simple opposite or spiral leaves. Stipules absent or 

 c. 5 



