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TABLE OF GENERA. 
Order LXYII. PLANT AGIN ACEE. 
1. Plantago. Stamens upon the corolla. 
2. Littorella. Stamens hypogynous. 
Order LXYIII. AMARANTHACEE. 
1. Amabantiius. The only British genus. 
Order LXIX. CHENOPODIACEE. 
1. Beta. Stamens 5, on a fleshy ring. Ovary adhering to the calyx. 
2. Chenopodium. Stamens 5, on the receptacle. Ovary free. 
3. Atriplex. Stamens 5. Flowers monoecious, of different forms. 
4. Salicornia. Stems jointed, succulent, leafless. Stamens 1 or 2. Calyx entire. 
fleshy. 
5. Salsola. Stamens 5, from an hypogynous ring. Calyx 5-parted. 
Order LXX. SCLERANTHACEE. 
1. Scleranthus. The only British genus. 
Order LXXI. POLYGONACEE. 
1. Polygonum. Sepals 5. 
2. Rumex. Sepals 6. Styles 3. 
3. Oxyria. Sepals 4. Styles 2. 
Order LXXII. THYMELACEE. 
1. Daphne. The only British genus. 
Order LXXIII. SANTALACEE. 
1. Thesium. The only British genus. 
Order LXXIV. ARISTOLOCHIACEE. 
1. Aristolociiia. Anthers 6, sessile on the style. A climbing plant. 
2. Asarum. Stamens 12. A low herb. 
Order LXXY. EMPETRACEE. 
1. Empetrum. Tho only British genus. 
Order LXXYI. EUPHORBIACEE. 
1. Mf.rcurialis. Calyx 3-parted. Dioecious or monoecious. 
2. Euphorbia. Flowers in monoecious heads, surrounded by bracts. Ovary stalked. 
3. Buxus. An evergreen shrub. Stamens 4. Monoecious. 
Order LXXYII. CALLITRICHACEE. 
1. Callitriciie. The only British genus. 
Order LXXYIII. CERATOPHYLLACEE. 
1. Ceratopiiyllum. The only British genus. 
Order LXXIX. URTICACEE. 
1. Urtica. Flowers monoecious or dioecious, in racemes. 
