SYNOPSIS OF ORDERS 



{As in May, 1922.) 



Division : Angiosperm^. 



Flowering plants with the ovules enclosed in an ovary with 

 a stigma. 



Group: DICOTYLEDONES. 



Plants with reticulate-nerved leaves. Petals, sepals, stamens and 

 carpels in twos, fives, or multiples of these (except Anonace^ VT, 

 perianth segments usually in threes.) Seeds with 2 cotyledons. 



Section (A.) Polypetal^. 



Perianth of 2 whorls, sepals and petals (petals occasionally 

 absent by abortion). Petals free not connate in a tube. 



Sub-section (i). Thalamiflor^ 



Calyx free from the ovary. Petals in one or more series, inferior. Stamens 

 usually indefinite on a torus {receptacle). Ovary free, superior. {Orders 

 I— XXVI.) 



I. Ranunculace^. Sepals 5. Petals in one series. Stamens 

 many. Achenes (or follicles) apocarpous. Only climbers in 

 this region. 

 II. DiLLENiACE^. Trees or climbers, one herb. Sepals persistent. 

 Stamens numerous. Flowers showy, white or yellow. Follicles 

 apocarpous. 



III. Magnoliace^. Trees or shrubs. Stipules large covering buds. 



Flowers large, white or yellow. Stamens numerous ; anthers 

 narrow. Carpels numerous, separate spirally on an elongate 

 axis. 



IV. WiNTERACE^. Trees or shrubs, aromatic. Stipules none. 



Flowers small, axillary. Sepals i or 2 series. Petals many 

 series. Stamens many to 15 ; anthers sub-globose. Carpels 

 in one whorl. 

 V. ScHizANDRACE^. Liancs. Stipules none. Flowers unisexual. 

 Sepals and petals 9 to 15. Stamens numerous, connate. 

 Fruit a fleshy mass of carpels. 



