GENERAL KEY. v 



Ovary 10-celled, cells 1-ovuled Amelanchier in ROSALES 180 



Ovary 2-5-eelled. 



Leaves alternate, with stipules; or opposite, without stipules. 



ROSALES 167 

 Leaves alternate, without stipules. .Styracaceae in EBENALES* 252 



Ovary 1-celled. with the ovules parietal OPUNTIALES 229 



Ovary 1-celled, with the ovules rising from the base. 



Portulacaceae in CHENOPODIALES 132 



B. Stamens of the sutne number as the petals and opposite them. 

 Pistils 3-6, separate ; flowers dioecious, woody vines. 



Menispermaceae in RANALES 143 

 Pistil only one. 



Ovary 1-celled ; anthers opening by uplifted valves. 



Berberidaceae in RANALES 143 

 Ovary 1-celled ; anthers not opening by uplifted valves. 

 Style and stigma 1 ; ovules more than 1. 



Primulaceae in PRIMULALES* 250 

 Stvle 1; stigmas 3; sepals 2; ovules several. 



Portulacaceae in CHENOPODIALES 132 

 Style twice or thrice forked; flowers monoecious. 



Crotonopsis in GERANIALES Sll 

 Styles 5; ovule and seed only 1. 



Plumbagixaceae in PRTMULALES* 250 

 Ovary 2-4-celled RHAMNALES 218 



C Stamens not more than tivice as many as the petals, when just of 

 the same number, then alternate icith them. 

 1. Calyx free from the ovary, i. e., ovary wholly superior. 

 '*Ovaries 2 or more, separate. 

 Stamens unitetl with each other and with a large, thick stigma common 



to the 2 ovaries Asclepiadaceae in GENTIANALES 253 



Stamens unconnected, on the receptacle, free from the calyx. 



Leaves punctate with pellucid dots. .Rutaceae in GERANIALES 205 

 Leaves not pellucid-punctate. 



Trees, with pinnate leaves. .. .Ailanthus in GERANIALES S09 

 Low shrub, with pinnate leaves or herbs, not fleshy. 



Raxunculaceae in RANALES 143 



Herbs, with thick, fleshy leaves . . Crassulaceae in ROSALES 167 



Stamens unconnected, inserted on the calyx ROSALES 167 



**Ovaries 2-5, somewhat united at base, separate above. 

 The carpels fewer than the petals Saxifragaceae in ROSALES 167 



***Ovar\es or lobes of ovary S-5, with a common style. 



Geraniaceae in GERANIALES 205 



^*** Ovary only 1, and 



Simple, with one parietal placenta Papilionaceae in BOS ALES 167 



Compound, as shown by the number of cells, placentae, styles and 



stigmaa. 

 Ovary 1-celled. 



Corolla irregular ; petals 4 ; stamens 6. 



Papaveraceae in PAPAVERALES 154 

 Corolla irregular; petals and stamens 5. 



Violaceae in PARIETALES 222 

 Corolla regular or nearly so. 



Ovule solitary; shrubs or trees; stigmas 3. 



Anacardiaceae in SAPIN dales 214 



