90 



XXIII. STAPHYLEACE^E. 



37. SAXiFRxVGACEiE. Calyx deeply divided or spreading ; imbricated in 



sestivation. Stamens tAvice as many as the petals. Styles 2 or 

 more. Fruit superior or only partly so. Seeds numerous in each 

 cell. 



25. Ehamnace^e. Calyx valvate in estivation. Stamens as many as 



and opposite to the minute petals. Fruit superior or partly so. 



24. Celastrace^. Calyx spreading; calyx and petals imbricated in 



aestivation. Stamens as many as the petals and alternatinf^- -u-itij 

 them. Disk large, expanded, flat, closely sin-rounding the ovary 

 and covering the flat bottom of the calyx. Fruit superior or partly 

 so, dehiscing, seeds never bony. Leaves simple. 



[23. Staphyleace.^. Calyx deeply divided, erect; calyx and petals 



imbricated in festivation. Stamens as many as the petals and 

 alternating with them. Disk large, free. Ovary quite free. 

 Fruit superior. Seeds bony. Leaves pinnate. 



28. Onagrace/E. Calyx-segments valvate; petals convolute in aestiva- 



tion. Style 1. Ovary inferior. 



29. Haloragaceye. Monoecious. Sepals 4. Stamens 8. Styles 4. Fruit 



inferior, splitting into 4 indehiscent 1 -seeded achenes. Leaves 

 opposite or verticillate, 



38. Umbei^lifer^e. Petals 5, imbricated in aestivation. Stamens 5, 



alternating with the petals. Styles 2. Fruit inferior, splittint^ 

 into 2 indehiscent 1 -seeded carpels. Leaves alternate. 



39. Araliace^. Petals valvate in gestivation. Styles several, distinct 



or combined. Fruit inferior, baccate; cells each 1 -seeded. Leaves 

 alternate. 

 . 40. CoRNACErE. Petals 4, valvate in [estivation. Stamens 4, alternating 



with the petals. Style 1. Ovary inferior. Leaves opposite. 



B, Corolla monopetalous. 

 * Ovary inferior or partly superior^ with one perfect celL 



f Ovules severalin each cell, 



\_(jQ. PRiMULACEiE. Flowcrs perfect. Placenta central, free, 



plants.] 

 32. CucuRBiTACE.E. Flowcrs imperfect. Placentas parietal. 



■with tendrils. 



Erect 

 Plants 



ff Ovules solitary in each cell. 



46. Composite. Flowers upon a receptacle, within a common involucre. 



Anthers of the perfect flowers united. Ovule erect. Albumen 

 wanting. 



45. DirsACACE^. Flowers perfect, upon a receptacle, within a common 



involucre. Anthers and filaments distinct. Ovule pendulous. Al- 

 bumen fleshy. Leaves opposite. 



44, Valeriana CE.ii:. Flowers cymose, without an involucre. Anthers 



and filaments of perfect flowers distinct. Style filiform; stigma 

 trifid. Ovule pendulous. Albumen wanting. Leaves opposite. 



42. Caprifoliace^e. Flowers cymose. Anthers and filaments distmct. 



Stigmas 3 sessile. Ovule pendulous. Albumen fleshy. Leaves 

 opposite. 



** Ovary inferior or only partly inferior,with 2 or more perfect ceuS' 



39. Araliace^e. Styles 4—5. Leaves alternate. 



