Xll 



ANALYTICAL ARTIFICIAL KEY. 



* * Pistil only one, 



+- Simple, i. e. of one carpel, as shown by the single style, stigma, and cell (the latter sometimes 

 with a false division in Astragalus). 



Anthers opening by uplifted valves or transversely. BERBERIDACE^E, 2. 

 Anthers opening lengthwise or at the top. 



Flowers irregular, or leaves twice pinnate : fruit a legume. LEGUMINOS.E, 31. 



Flowers irregular : leaves simple. POLYGALACE.S;, 12. 

 Flowers regular. 



Leaves opposite, punctate. Cneoridium in RUTACE^E, 25. 

 Leaves alternate, not punctate, mostly stipulate. 



Fruit a drupe or akene. ROSACES, 32. 



Fruit a coriaceous follicle. Glossopetalon in SAPINDACE.E, 29. 



+- +- Pistil compound, as shown by the number of cells or placentae, styles or stigmas. 



Ovary 1-celled, with (2 to 4 or rarely more) parietal placentae. 

 Petals (long-clawed) and teeth of long-tubular calyx 4 or 5. 

 Petals and sepals or lobes of the cleft calyx 5. 

 Corolla irregular ; lower petal spurred. 

 Corolla regular or nearly so. 

 Styles or sessile stigmas entire. 

 Styles 3, each 2-parted : placentae 3. 

 Petals 2, but persistent sepals 4 : flower irregular. 

 Petals 4, but bract-like sepals 2 : flower irregular. 

 Petals 4 or 6 : sepals half as many, caducous. 

 Petals and sepals each 4 : stamens 6. 



Ovary and pod 2-celled : 2 placenta parietal : stamens tetradynamous. 

 Ovary and capsule 1-celled, several - many-seeded on a central placenta, 

 Truly so, the partitions wanting or very incomplete. 

 Sepals 2 : leaves often alternate. 

 Sepals or calyx-lobes 5 or sometimes 4 : leaves all opposite. 



FRANKENIACE.E, 13. 

 VIOLACEJE, 11. 



SAXIFRAGACE.E, 34. 

 DROSERACE.E, 36. 

 RESEDACE^E, 9. 

 FUMARIACE.E, 6. 

 PAPAVERACE^E, 5. 

 CAPPARIDACE.S;, 8. 

 CRUCIFER.E, 7. 



PORTULACACE.E, 16. 

 CARYOPHYLLACE^E, 14. 



Glaux in PRIMULACE^E, 57. 



Here may be sought the apetalous 

 Apparently so ; the partitions at length vanishing. 



Stipules between the opposite leaves. 



No stipules. 



Ovary and fruit 1-celled with a single seed on a stalk from the base. 

 Shrubs : styles or stigmas 3 : fruit drupe-like. 

 Herbs : fruit a utricle. 



Style at most 2-cleft : stipules scarious. 



Styles 5 : calyx scarious. 



Ovary more than 1-celled : seeds attached to the axis, or base, or summit. 

 Flowers very irregular : ovary 2-celled : cells 1-seeded. POLYGALACE.E, 12. 



Flowers regular or nearly so. 



No green foliage. Monotropeae, &c., in ERICACEAE, 54. 



ELATINACE.E, 18. 

 LYTHRACE^E, 37. 



ANACARDIACEJE, 30. 



ILLECEBRACE.E, 15. 

 PLUMBAGINACE.E, 56. 



Foliage pellucid-punctate : strong-scented shrubs. 

 Foliage not pellucid-punctate. 

 Anthers opening by terminal pores or chinks at the end. 

 Anthers opening lengthwise. 



Stamens as many as the petals and opposite them, i. e. alter- 

 nate with the calyx-lobes, 

 These valvate in the bud. 

 These small or obsolete : petals valvate. 

 Stamens when just as many as petals alternate with them. 

 Strong-scented shrub : leaves opposite, 2-foliolate. 

 Strong-scented herbs : leaves lobed or compound. 

 Herbs, not strong-scented. 

 Ovules 1 to 4 in each cell. 

 Leaves all simple and entire. 

 Leaves all opposite, compound, and leaflets entire. 

 Leaves alternate or opposite, the latter with divisions 



or leaflets not entire. 

 Ovules numerous. 

 Stamens on the calyx : style 1. 

 Stamens on the calyx : styles 2 or 3. 

 Stamens on the receptacle : leaves opposite, simple. 

 Cells of the ovary as many as the sepals, 2 or 5. 



Cells fewer than the sepals, 3. 



RUTACE.E, 25. 

 ERICACE.E, 54. 



RHAMNACE^E, 27. 



VlTACEjE, 28. 



ZYGOPHYLLACE.E, 23. 

 GERANJACE.E, 24. 



LINAGES, 22. 

 ZYGOPIIYLLACE-E, 23. 



GERANIACE.&, 24. 



LYTHRACE^E, 37. 

 SAXIFRAGACE^E, 34. 



ELATINACE^, 18. 



Mollugo in FICOIDE*, 44. 



