TABLE OF GENERA. 
XXXV 
8. Potentilla. Carpels on a dry flat disk. Calyx double. Petals 5, larger than 
the calyx. 
9. Tormentilla. Carpels on a dry flat disk. Calyx double. Petals 4, larger than 
the calyx. 
10. Sibbaldia. Carpels on the bottom of the calyx. Calyx double. Petals 5, 
minute. 
11. Agrimonia. Carpels 2, enclosed within the calyx-tube. Petals 5. Calyx single. 
12. Alciiemilla. Carpels 1 or 2, within the calyx-tube. Petals none. Calyx double. 
13. Sangcisorba. Carpels 1 or 2, within the calyx-tube. Petals none. Calyx 
single, with bracts below. Stamens 4. 
14. Poterium. Carpels 1 or 2, within the calyx-tube. Petals none. Calyx single. 
Stamens numerous. 
15. Rosa. Fruit formed of small nuts, within the fleshy calyx-tube. 
Fruit a pome. 
16. Mespiujs. Calyx-teeth large and leafy. Petals large. Disk nearly as broad 
as the fruit. 
17. Crat/egus. Calyx-teeth small. Petals large. Carpels bony. 
18. Cotoneaster. Calyx-teeth small. Petals small, erect. 
19. Pyrus. Calyx-teeth small. Petals large. Carpels cartilaginous. Disk of fruit 
small. 
Order XXVII. OXAGEACEJ2. 
1. Epilobiuh. Calyx 4-cleft. Stamens 8. 
2. (Enothera. Calyx tubular below. Stamens 8. 
3. Isnardia. Calyx 4-cleft. Stamens 4. 
4. Circe a. Calyx 2-cleft, deciduous. Stamens 2. 
Order XXVIII. HALOEAGACEAti. 
1. Hippuris. Stigma 1. 
2. Myriopiiylluji. Stigmas 4. 
Order XXIX. LYTHEACEJE. 
1. Lytiirum. Calyx tubular, cylindrical. Style filiform. 
2. Peplis. Calyx bell-shaped. Style very short. 
Order XXX. TAMAEICACE^E. 
1. Tamarix. The only British genus. 
Order XXXI. CUCUEBITACEiE. 
1. Bryonia. The only British genus. 
Order XXXII. POETULACEiE. 
1. Montia. The only British genus. 
Order XXXIII. ILLECEBEACEJE. 
1. Corrigiola. Fruit 1-seeded, indeliiscent. Petals oblong. Leaves alternate. 
2. Herniaria. Fruit 1 -seeded, indehiscent. Petals filiform. Leaves opposite. 
3. Illecebrum. Fruit 1-seeded, opening in 5 valves. Leaves opposite. 
4. Polycarpon. Fruit with several seeds, 3-valved. 
Order XXXIV. CEASSULACE^E. 
1. Till.ea. Petals distinct, 3 or 4. Stamens alternating with the petals. 
2. Cotyledon. Petals united into a tube. 
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