17 



Female flowers without crown, Papayaceae. 



Sexes distinct. Placeutae liuiug the fruit, Bixineae {Flacourtieae). 



Flowers without sterile stamens. 



Hypogynous disk large. Stamens indefiuite,.... Capparideae. 



Hypogynous disk small or wanting. 



A Ibvimen very abundant. Embryo minute, Papaveraceae. 



Albumen in small quantity or wholly wanting, Tarnemceae. 



Placentas covering the dissepiments Nympliaeaceae. 



Placentas axile. 



Styles distinct to the base. 



Calyx in a broken whorl, much imbricated. 



Stamens polyadel})hous, Hypericineae. 



Stamens monadelphous or free, Linaceae. 



Calyx but little imbricated, in a complete whorl. 



V Carpels each with an hypogynous scale, Grassulaceae. 



^' Carpels destitute of hypogynous scales. 



Carpels 2, divaricatiug at apex, Saxifmgeae. 



Carpels not divaricating at apex, . . . ., Caryophylleae, 



Styles more or less combined. Gynobasic. 



Stamens arising from scales, Siinaruheae. 



Stamens not arising from scales. 



Styles wholly combined. Flowers hermaphrodite, Eutaceae. 



Styles wholly combined. Flowers unisexual, Rutaceae {Xanthoxyleae). 



Styles divided at apex. Flowers irregular, , . .Oeraniaceae (Balsamineae), 

 Styles more or less combined, not gynobasic. 

 Calyx much imbricated, in a broken whorl. 



Flowers symmetrical, , Guttiferae. 



Flowers not symmetrical. 

 Flowers regular. 



Petals without appendages Sapindaceae(Acerineae). 



Petals with appendages, . . , Sapindaceae. 



Flowers papilionaceous, Polygaleae, 



Calyx but little imbricated, in a complete whorl. 



Carpels 4 or more. Anthers opening by pores, . . . . ; Ericaceae. 



Carpels 4 or more. Authers opening by slits. 



Seeds winged. Leaves pinnate Meliaceae (Cedreleae). 



Seeds wingless. 



Stamens united in a long tube, Meliaceae. 



' Stamens free or nearly so. Leaves dotted, Rutaceae, 



Carpels fewer than 4. 



Sepals 2, Portulacaceae. 



Sepals more than 2. 



Stamens hypogynous. 



Seeds coniose, , Tamariscinoae. 



Seeds naked, Pittonporeae. 



Stamens perigynous > Celastrineae, 



Calyx valvate or open. 



Stamens equal in number to the petals and opposite to them, Rhamnaceae. 

 Stamens equal in number to the petals, alternate with them. 



Leaves pinnate, Burse'raceae. 



Leaves simple. Calyx tubular. Stamens hypogynous, Olacineae. 



Leaves simple. Calyx tubular. Stamens perigynous, ..Lythrarieae. 

 * Gamopetaloui, i, e., the petals combined in an entire corolla. 



+ Ovary superior. 



Flowers regular. 



O Ovary 3-, 4-, 5-lobed. 



I>>ave8 dotted, ..Rutaceae. 



Leaves dotleas. Inflorescence gyrate, Boragmcae. 



O O Ovary not lobed. 

 Carpels from 4 to 5, or none. 



Anthers opening by pores. 



Anthers 2-celled, Ericaceae. 



Anthers 1-celled Epacrideae. 



Anthers opening by slits. 



