XXX INTRODUCTION. 



Leaves alternate. 



Sepals 2. Leaves entire. Placenta central. PORTULACACEJ5, 38 



Leaves lobed. Placenta parietal. PAPAVERACEJ5, 20 



Sepals 4. Fruit indehiscent. Leaves entire. Shrubs. 



T, .. , -r n ft -,- , 



Fruit valvate. Leaves 3- 7-foholate. Herbs. 

 Sepals 5. Leaves small, entire. Two outer sepals small and bract-like. 



CISTACE.E, 35 



Leaves large, 3-ternate. Fruit a follicle. CIMICIFUG^E, 2 



Leaves all radical, fringed, irritable. DROSERACE^E, 19 

 Sepals united into a 4 - 5-toothed calyx. Leaves compound. Flowers capitate. 



MIMOSE^E, 9G, 120 

 Ovary solitary, 2- or more-celled. 

 Shrubs or trees. 



Leaves opposite. Sepals 5. Stamens separate. HYPERICACEjE, 55 



Sepals G. Stamens united. CLUSIACE^E, GO 



Leaves alternate, stipulate. Stamens monadelphous. MALVACEAE, 45 



Stamens separate, or in clusters. TILIACE M, 54 

 Leaves alternate, exstipulate. 



Flowers perfect. Stamens on the base of the petals. CAMELLIACEJi, Gl 



Flowers monoecious. Stamens hypogynous. Capsule 3-celled, 3-seeded. 



Herbs. EUPHORBIACE^, 421 



Flowers irregular. Stamens 6 or 8. Petals 3. POLYGALACE.E, 88 



Flowers regular. Leaves exstipulate, opposite, entire. HYPERICACE^B, 55 



Leaves exstipulate, alternate, tubular. SARRACENIACEJE, 18 



Leaves stipulate. Stamens monadelphous. MALVACEAE, 45 



- *- Stamens twice as many as the petals. 



Stamens 12 - 20. Leaves peltate, lobed. Flowers solitary, nodding. PODOPHYLLUM, 1C 

 Stamens 10. 

 Leaves compound. 



Leaves stipulate, alternate. Fruit a legume. LEGUMINOS.E. 93 



opposite. Fruit separating into indehiscent carpels. 



ZYGOPHYLLACE.E, G7 



Leaves exstipulate, trifoliolate, the leaflets obcordate. Herbs. OXALIDACE.E, G5 

 pinnate. Flowers dicecious. Trees. BURSERACE.E, 71 



pinnate or bipinuate. Flowers perfect. Trees. MELIACE^E, 03 

 Leaves simple. 



Herbs. 



Flowers monoecious. Capsuls 3-celled, 3-seeded. EUPHORBIACE^E, 421 



Flowers perfect. Leaves alternate, or 3 in a whorl. Stamens 8 or 10. 



CRASSULACE.E, 149 

 Leaves alternate, palmately lobed. Fruit of 5 elastic carpels. 



GERANIACE.E, GG 

 Leaves opposite, entire, dotted. Flowers yellow. 



HYPERICACEjE, 55 



Leaves opposite, or whorled, not dotted. Flowers never yellow. 



Trees or shrubs. CARYOPHYLLACE^, 39 



Leaves stipulate, lobed. Fruit uncinate-hispid. TILIACE^E, 54 



Leaves exstipulate, entire. Cells of the capsules 1-seeded. CYRILLACE^E, 83 



Cells of the capsule many-seeded. ERICACEAE, 279 



Stamens less than 10 (two exceptions). 

 Petals 3. Stamens G or 8, united in one or two sets. Flowers irregular. 



POLYGALACE^E. 88 

 Petals 3. Stamens 6. Aquatic herbs, with finely dissected opposite leaves. 



CABOMBE.E, 17 



Petals 3 -5. Stamens 6-10. Leaves trifoliolate. Trees. BURSERACE^, 71 



Petals 4 -5. Stamens 8 or 10, Leaves simple, succulent. Flowers cymose. 



CRASSULACE^E, 149 

 Petals 4. Stamens S, Leaves simple. Flowers racemose. A shrub. ELLIOTTIA, 288 



