260 



MANUAL OF BOTANY 



b. Carpels more than one, combined. 

 Seeds exalbuminous. 



Calyx imbricate ..... Ulmacece. 

 Seeds albuminous. 



Styles or stigmas 2. Leaves not dotted Ulmacece. 



2. Flowers unisexual. 



a. Carpel solitary. 



Cells of anther perpendicular to the fila- 

 ment ...... StilaginacecE. 



Cells of anther parallel to the filament. 

 Embryo straight. 



Sap watery. Sti^jules small. Seeds 



albuminous ..... TJrticacecB. 



Sap milky. Stipules large. Seeds ex- 

 albuminous ..... Artocarpacece. 



Embryo hooked. 



Sap watery. Seeds without albumen Cannabinacece 

 Sap milky. Seeds with albumen . Moracece, 



b. Cari^els more than one, combined. 

 Flowers amentaceous. 



Seeds arillate. 



Stamen 1 . . . . . Lacistemacece 



Stamens more than 1 . . . kicejoacece. 



Seeds not arillate . . . Betidacece. 



Flowers not amentaceous . . Euphorbiacece 



b. Leaves exstipulate. 

 1. Flowers hermaphrodite. 

 a. Carpel solitary. 



Anther- valves recurved .... Lauracece. 



Anthers slit. 



Leaves covered with scales . . . ElceagnacecB. 

 Leaves not so covered. 

 Calyx long or tubular. 



Hardened at base .... NyctaginacecB. 



Not hardened in any part. 



Stamens in the i)oints of the sepals Proteacece. 

 Stamens not in the points of the 



sepals ..... Thymelacece. 



Calyx short, not tubular, or but 

 slightly so. 

 Flowers in involucels . . . Polygonacece. 

 Flowers not in involucels. 



Calyx dry and coloured . . Amarantacece. 

 Calyx herbaceous or succulent. 

 Stamens hypogynous or nearly 

 so . . . . . . ChenopodiacecB 



Stamens perigynous . . . Basellacece. 



