21 



Stamens in the points of the sepals, Protcaceae. 



Stamens not in the points of the sepals. 



Ovules erect, Elaeagnaceae. 



Ovules pendulous, Tliyimlaeaceae. 



Calyx short, not tubular, or but little so. 



Leaves lepidote, .Elaeagnaceae. 



Leaves dotted, not lepidote, ... .Burseraceae. 



Leaves neither dotted nor lepidote. 



riowers in involucels, Pohjgonaceae. 



Flowers naked. 



Calyx dry and coloured, Amarantaceae. 



Calyx herbaceous or succulent, . . .Sakolaceae. 

 Flowers unisexual. 



Oiirpels more than 1, combined into a solid pistil. 



Ovules indefinite in numbers. Stamens columnar, Nepenthaeeae. 



Ovules definite in number. 



Leaves dotted, Riifaceae {Xnnthoxyleae). 



Leaves not dotted, .' Etiphorhiaceae. 



Carpels solitary or quite separate. 



Calyx tubular, 3-clef't, Mi/ridicaceae. 



Caly.x open ; carpels several, Mcnispcj'inaceae. 



Calyx open ; carpel solitary. 



Embryo straight (without albumen) ; trees, Cnsaarineae. 



Embryo curled (round a mealy albumen) ; herbs, Sakolaceae. 



IL GYMNOSPBEMS. |||l 



Stem jointed, Gnetace^ 



Stem continuous. 



Leaves pinnate, . . . . , Cycadeae. 



Leaves simple. 



Females in cones, Coniferae {Pinnae). 



Females solitary, Coni/anie ( Taxaceae). 



B. MONOCOTYLEDONS OR ENDOGENS. 



Leaves netreined, often deciduous ; wood of the stem when perennial, arranged in a 



circle tcith a central pith. 



Ovary inferior, , i Dioseoreaceae. 



Ovary superior. 



Placentae axile. 



Perianth of 6 parts, Sinilaceae. 



Perianth of 3 parts, Trilliaceae. 



Placentae at the summit, ovules pendulous, Roxburghiaccae. 



* * Leaves parallel-veined, persistent ; wood of the stem always confused. 



pioiccrs complete {having distinct coloured floral envelope's). 

 Ovary inferior. 



t Flowers gynandrous, viz. the stamens tcith the pistil consolidated. 



Ovary 1-celled. Seed-coat loose Orchideae. 



Ovary 3-celled, Apostasiaceie. 



tt Flowers-not gynandrous, viz. the stamens and pistils free. 

 Veins of leaves diverging from the midrib. 



Anther 1, with one cell, , Marantaceae. 



Anther 1, with two cells, Scitamineae. 



Anthers 5 or 6, Musaceae. 



Veins of leaves parallel with the midrib. 

 Stamens 3. 



Anthers turned outwards, , ,Iridaceae. 



Anthers turned inwards, (fruit winged), Burmanniaceae, 



Stamens 6. 



Fruit 3-celled ; sepals petal-like, Amnryllideae. 



Fruit 3-celled ; sepals green, Bromeliaceae. 



Fruit one-celled, 2'accaceae. 



Stamens more than 6, , . . . , Jlydrocharidcae. 



Ovary superior. 



