XX ANALYTICAL KEY. 



Ovary one-celled, with the ovules parietal. 

 Fleshy plants with no true foliage : petals maDy. . 136 (51) Cactace.®. 

 Bough-leaved plants : petals 5 or 10. ... 135 Loasace^b. 



Ovary one-celled, half free from the 2-cleft calyx ; ovules 

 on slender stalks from a central placenta rising 

 from the base of the cell 63 (36) Portulacace2e. 



IS. Stamens of the same number as the petals and opposite them. 



Pistils 3 - 6, separate. Flowers dioecious. Woody vines. 18Menispermace2E. 

 Pistil only one. 



Ovary one-celled: anthers opening by uplifted valves. 19 (32) Berberidaceje. 

 Ovary one-celled : anthers not opening by uplifted valves. 



Style and stigma one : ovules more than one. . . 270Primulace,e. 



Style one : stigmas 3 : sepals 2 : ovules several. 63 Portulacace^;. 



Styles 5 : ovule and seed only one. . . 270 (62) Plumbaginace^e. 

 Ovary 2-4-celled. 



Calyx-lobes minute or obsolete : petals valvate. 77 (41) Vitace.e. 



Calyx 4-5-cleft, valvate in the bud : petals involute. 78 Rhamnace,£. 



C. Stamens not more than 10, or at least not more than twice as many as the petals, 

 when of just the number of the petals then alternate with them. 



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



* Ovaries 2 or more, separate. 



Stamens united with each other and with a large and 



thick stigma common to the two ovaries. . . 350 Asclepiadace.*:. 

 Stamens unconnected, 

 Inserted on the receptacle, free from the calyx. 



Leaves punctate with pellucid dots. ... 74 (40) Butace.e. 



Leaves not pellucid-punctate. 



Tree, with pinnate leaves : flowers polygamous 



or dioecious. (40) Simarubace^e. 



Low shrub with pinnate leaves and perfect \ 



flowers in racemes. . Za-,.thorhiza in £ 2 (30) Banunculace.e. 

 Herbs with the leaves not thickened. ' 



Herbs with thickened succulent leaves. . 139 (53) Crassulace^e. 



Inserted on the calyx, 

 Just twice as many as the pistils : leaves thick and 



succulent. 139 (53) Crassulace^e. 



More than twice as many as the two, or occasionally 



three, many-seeded pistils. . . .141 (54) Saxifraqacejb. 

 Seldom just twice the number of the few-seeded pis 

 tils : leaves not succulent or thick, mostly fur- 

 nished with stipules. 110 (45) Bosace^b. 



