XXX INTRODUCTION. 



Orary eolitary, 1-celled. 

 Placenta central. Sepals 2, deciduous. Anthers introrse. 

 Sepals 5, persistent. Anthers extrorse. 

 Placentae parietal. 



Calyx persistent. Capsule 3-valTed : placentae 3. 

 Calyx deciduous. Juice colored. Leaves simple, lobed. 

 Juice watery. Placenta 1. Leaves 2 - 3-ternate. 

 Juice watery. Placentae 2. Leaves simple or trifoliolate. 

 Ovary solitary, 2 - many -celled. 



Stauieus connected with the base of the petals. 

 Stiioipns united in a column. Sepals valvate. 

 Stamens united in a ring. SepaU imbricated. 

 Stamens free from the petals. 



Stamens united into a tube. Sepals persistent. 

 Stamens united in clusters. Sepals deciduous. 

 Stamens separate. Ovary 5-cclled. Leaves tubular. 

 Ovary many-celled. Leaves flat. 



■I- t- Sta77iens twice as many as the petals. 

 Ovaries more than one. 

 Flowers dioecious. Fruit a drupe. Trees, with pinnate leaves. 

 Flowers perfect. Fruit dry, indehiscent, 1 -3-seeded Ariuiitic herbs. 

 Fruit a many -seeded follicle. Fleshy herbs. 

 Ovary solitary, 1-celled. 

 Leaves alternate. Fruit a legume. Leaves stipulate. LEGUMINOSJE, 86 



Leaves opposite. 

 Fruit a capsule, with parietal placenta;. Leaves entire, dotted. IIYI'ERIC.\CEiE, 38 

 Fruit a capsule, with a free central placenta. Loaves dotless. CARYOrilYI.L.VCEi'E, 45 

 Fruit a drupe. Shrubs, with trifoliolate dotted leaves. BUKSEK.\CE./E, 67 



Fruit a berry. Herbs, with two peltate lobed leaves. BEUI!ElUD.\CEi'E, 16 



Ovary solitary, 2-celled. 



Flowers irregular : stamens monadelphous. Capsule 2-sccded. POLYOAL.\CEi'E, 82 



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



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



Flowers monoecious. Fruit 3-6eeded, 3-valved. Stamens united. EUPHORBIACE.*;, 399 



Flowers perfect. Fruit 3-secded, 3-winged, indehiscent. CYRILL-XCE.!?, 272 



Fruit many-seeded, 3-vaIved. ERlCACEiE, 267 



Ovary solitary, 4-celled. Stamens 8. 



Style single. Low fleshy root-parasites, with scale-like leaves. MONOTROPEiE, 268 



A shrub, with alternate lea'ses and bractless flowers. CYRILLACEJE, 272 



Styles 4. Flowers cymose. Capsule 4-lobed, spreading. CRASSULACEiE, 149 



Ovary soIitJiry 5-celled. Stamens 10. 



Style hingle. Stamens monadelphous. Leaves alternate, pinnate. CEDUELACE.T;, 62 



S (aniens separate. Leaves opposite, pinnate. ZYGOPIlYLLAt'E/E, 63 



Stamens separato. Leaves alU^rnate, simple. I'YKOLEyE, 268 



Styles G. Cells of the fruit ncpaniting into 1-sccded nutlets. GERAN'lACEiE, 64 



Cells of the fruit united. Leaves trifoliolate. OXALIDACE.!-:, 63 



Ovary solitary, 7-rcllpd. Anthers opening by terminal pores. EKlCACEifE, 26i 



Ovary BOlitary, 10 - 12-celIed. I^caves opposite, abruptly pinnate. ZYOOPIIYLLACE.'E, 63 



■4- <- -1- Stamens excerrli/tg the petals in number, hut not twice as many. 

 Ovary l-rellcd. Petals 4 : stamens 0. 



SepnlH 2. Flowers Irregular. Embryo minute In flc^<liy albumen. FI'M ARl ACEiT"., 22 



KopniH 4. Flowcrii n-gular. Embryo large. Albumen none. CAl'r.\RII).\(,'E.E, 31 



Ovarj- 2-r(.|le(L 



PotJils3. Stiimens 8, monadelphous. Anther" 1 celled. POLYGAI.ACE.E, 82 



Petals 4. Stauicn8 6. Fruit a Hill<iuo omlllclo. CRUClFEHil!;, 28 



