SYNOPSIS OF ORDERS AND FAMILIES, ETC. VII 



Division I. Dicotyledonae '<■ 



Stems formed of bark, wood or pith and increasing in diameter 

 year after year by the addition of annual layers next to the bark ; part9 

 of the flowers mostly in 4's or 5's; embryo with 2 cotyledons; leaves 

 mostly net-veined. 



Sub-division I. Apetalae 



Flowers without a corolla and sometimes without calyx. 



Section 1. Flowers in unisexual ament (pistillate flowers sometimes 

 solitary in Quercus and Juglans); ovary inferior. 



ORDER SALICALES 



Flowers without sepals or petals, unisexual, dioecious ; disk reduced 

 to a scale ; stamens 2 to indefinite ; carpels 2 ; ovary single, with parietal 

 placentae and indefinite ovules ; capsule with indefinite' seeds ; seeds small 

 with basal tufts of hair. Trees or shrubs with simple, alternate leaves ; 

 stipules present. 



Family 4. Salicaceae (Page 48) 



Flowers dioecious, without a calyx ; fruit a 2-4 valved capsule. 

 Leaves alternate, simple, deciduous, with stipules. 



ORDER MYRICALES 



Flowers in catkin-like spikes without sepals or petals, unisexual, 

 monoecious or dioecious; staminate 4 (2-16); carpels 2; ovary 1 celled 

 with a single, basal, erect, atropous ovule ; fruit a drupe. Trees or 

 shrubs with simple, rarely divided leaves. 



Family 5. Myricaceae (Page 56) 



Flowers monoecious or dioecious ; fruit a drupe, fleshy or dry; 

 leaves alternate, simple, punctate, persistent, rarely deciduous. 



ORDER JUGLANDALES 



Flowers in catkins without sepals or petals or with a simple 

 involucre, unisexual, monoecious; stamens 3-40; carpels 2; ovary 

 inferior with basal, erect ovule; fruit winged, drupaceous or a nut. 

 Trees or shrubs with alternate, mostly compound leaves without stipules. 



