XXX INTRODUCTION. 



Ovary solitary, 1-celled. 



Placenta central. Sepals 2, deciduous. Anthers introrse. PORTULACACE^E, 43 



Sepals 5, persistent. Anthers extrorse. DROSERACE^, 38 

 Placentae parietal. 



Calyx persistent. Capsule 3-valved : placentae 3. CISTACE^E, 35 



Calyx deciduous. Juice colored. Leaves simple, lohed. PAPAVERACEJE, 21 



Juice watery. Placenta 1. Leaves 2 - 3-ternate. CIMICIFUGE^I, 2 



Juice watery. Placentae 2. Leaves simple or trifoliolate. CAPPARIDACE^E, 31 

 Ovary solitary, 2 - many -celled. 

 Stamens connected with the base of the petals. 



Stamens united in a column. Sepals valvate. MALVACEAE, 52 



Stamens united in a ring. Sepals imbricated. CAMELLIACE^:, 60 

 . Stamens free from the petals. 



Stamens united into a tube. Sepals persistent. CLUSIACE^l, 42 



Stamens united in clusters. Sepals deciduous. TILIACE^E, 59 



Stamens separate. Ovary 5-celled. Leaves tubular. SARRACENIACE^E, 20 



Ovary many-celled. Leaves flat. NYMPH fflACEJE, 19 



i- -t- Stamens twice as many as the petals. 

 Ovaries more than one. 



Flowers dioecious. Fruit a drupe. Trees, with pinnate leaves. SIMARUBACE^, 67 

 Flowers perfect. Fruit dry, indehiscent, 1 - 3-seeded. Aquatic herbs. CABOMBACE.33, 18 



Fruit a many-seeded follicle. Fleshy herbs. CRASSULACE.E, 149 

 Ovary solitary, 1-celled. 



Leaves alternate. Fruit a legume. Leaves stipulate. LEGUMINOS^, 86 

 Leaves opposite. 



Fruit a capsule, with parietal placentae. Leaves entire, dotted. HYPERICACELS:, 38 

 Fruit a capsule, with a free central placenta. Leaves dotless. CARYOPHYLLACE^;, 45 



Fruit a drupe. Shrubs, with trifoliolate dotted leaves. BURSERACE2E, 67 



Fruit a berry. Herbs, with two peltate lobed leaves. BERBERIDACE.E, 16 

 Ovary solitary, 2-celled. 9 



Flowers irregular : stamens monadelphous. Capsule 2-seeded. POiYGALACE^I, 82 



Flowers regular : stamens separate. Capsule long, many-seeded. TILIACE2E, 59 

 Ovary solitary, 3-celled. Shrubs, with alternate leaves. 



Flowers monoecious. Fruit 3-seeded, 3-valved. Stamens united. EUPHORBIACE^I, 399 



Flowers perfect. Fruit 3-seeded, 3-winged, indehiscent. CYRILLACK3E, 272 



Fruit many-seeded, 3-valved. ER1CACKE, 257 

 Ovary solitary, 4-celled. Stamens 8. 



Style single. Low fleshy root-parasites, with scale-like leaves. MONOTROPE^I, 258 



A shrub, with alternate leaves and bractless flowers. CYRILLACE^E, 272 



Styles 4. Flowers cymose. Capsule 4-lobed, spreading. CRASSULACE^l, 149 

 Ovary solitary, 5-celled. Stamens 10. 



Style single. Stamens monadelphous. Leaves alternate, pinnate. CEDRELACE^E, 62 

 Stamens separate. Leaves opposite, pinnate. ZYGOPHYLLACEJ3, 63 



Stamens separate. Leaves alternate, simple. PYROLEJE, 258 



Styles 5. Cells of the fruit separating into 1-seeded nutlets. GERANIACE^E, 6 



Cells of the fruit united. Leaves trifoliolate. OXALIDACE^E, 6 



Ovary solitary, 7-celled. Anthers opening by terminal pores. ERICACEAE, 257 

 Ovary solitary, 10- 12-celled. Leaves opposite, abruptly pinnate. ZYGOPHYLLACE.E, 63 

 +-4-4- Stamens exceeding the petals in number, but not twice as many. 



Ovary 1-celled. Petals 4 : stamens 6. 



Sepals 2. Flowers irregular. Embryo minute in fleshy albumen. FUMARIACE2E, 22 



Sepals 4. Flowers regular. Embryo large. Albumen none. CAPPARIDACK&, 31 



Ovary 2-celled. 



Petals 3. Stamens 8, monadelphous. Anthers 1-celled. POLYGALACEJE, 82 



Petals*. Stamens 6. Fruit a silique or silicle. CRUCIFER^l, 23 



