Vlll KEY TO THE OEDEES 



** Ovary several-celled, or with several placentae, several- 

 ovuled. 

 Stamens hypogynoiis, inserted under the gynoecium in the 

 perfect flowers, not on a disk in the pistillate flowers. 

 Gynoecium 5-carpellary, the carpels nearly distinct. 



Buettneriaceae in Order Malvales. 

 Gynoecium 2-4-carpellary, the carpels united. 



Oleaceae in Order Oleales. 



Stamens perigynous or epigynous, inserted on the margin of 



a hypanthium or a disk. 



Fruit a samara. Families in Order Sapindales. 



Fruit not a samara. Order Rhamnales. 



b. Ovary inferior. 



Fruit a berry or a drupe, or nut-like. 



Calyx deciduous as a lid : stamens numerous. 



Galyptranthes in Order Myetales. 

 Calyx of valvate or imbricate sepals : stamens few. 



Ovules mostly on basal placentae, sometimes pendulous : 

 cotyledons not convolute : tree or root-parasites. 



Order Santalales. 



Ovules not on basal placentae : cotyledons convolute : not 



parasitic plants. Families in Order Myrtales. 



Fruit a capsule. Order Myrtales. 



B. Corolla present. 



* Petals distinct, at least at the base. 



Carpels solitary, or several and distinct, or united only at the base. 



Stamens at the base of the receptacle, i. e., hypogynous. Order Ranales. 

 Stamens on the margin of a hypanthium. 



Plants without secreting glands in the bark. Order Rosales. 



Plants with secreting glands in the bark. 



Surianaceae in Order Geraniales. 

 Carpels several and united. 

 t Ovary superior. 



t Stamens inserted at the base of the ovary or receptacle. 

 § Stamens numerous. 

 Sepals imbricated. 



Calyx deciduous. Order Papaverales. 



Calyx persistent. 



Leaves glandular or pellucid-punctate. 



Rutaceae in Order Geraniales. 

 Leaves not glandular. 



Capparidaceae in Order Papaverales. 

 Sepals valvate. 



Stamens with distinct filaments. 



Ovary 1-celled : placentae parietal. 



Capparidaceae in Order Papaverales. 

 Ovary 2-several-celled : placentae axile or central. 



Families in Order Malvales. 

 Stamens with united filaments. Order Malvales. 



§§ Stamens few, not over twice as many as the petals. 

 Stamens as many as in the petals and opposite them. 



Flowers monoecious. Euphorbiaceae in Order Euphorbiales. 

 Flowers perfect. 

 Stamens as many as the petals and alternate with them, or 

 more, sometimes twice as many. 

 Stamens 6 : petals 4 : sepals 2 or 4. 



Families in Order Papaverales. 

 Stamens, petals and sepals of the same number, or stamens 

 more, usually twice as many as the sepals or petals. 

 Ovary 1-celled. 

 Stigmas 2-cleft. 



Anther with an inconspicuous connective. 

 Anther with the conspicuous connective produced 

 beyond the sacs. 



Papayaceae in Order Passiflorales. 

 Stigmas entire. 



Stamens with united filaments and no staminodia. 

 Families in Order Malvales. 

 Stamens with distinct filaments. 



Families in Order Hypekicales. 

 Ovary several-celled. 



Stamens with wholly or partly united filaments. 



Families in Order Geraniales. 

 Stamens with distinct filaments. 

 Anthers opening by pores. 



Families in Order Ericales. 

 Anthers opening by slits. 



