6 GAMOPETALJE. KEY TO THE ORDERS. 



(28) Stamens didyiiamous Verbenacese. 



Stamens equal Logan iacese. 



(in Mitrasacme Ovary 2-celled, cells many-ovuled, stamens 5). 



(29) Aquatic herb, leaves floating, ovary 1 -celled Gentianace?e, 



(Limnanthemuni). 

 Terrestrial. (30). 



(30) Herb with cauline leaves, or shrubs or trees. (31). 



Herb, with all radical leaves Plantaginese. 



(31) Ovary 1 -celled, ovules many, placenta parietal, undershrubs 



Gesneracese, (IsantJierd). 



Ovary 2- or more- celled. (32). 

 (32)) Ovary 2-4-celled, ovules 4. (33). 



/3) Ovary 2-celled, cells mauy-ovuled. (33). 



;') Ovary 2-6-celled, cells 1-2 ovuled, shrubs or trees. (34). 



(33) Styles 2 Hydrophyllacese. 



Styles 1 Solanacepe. 



(33) Corolla plaited in bud Convolvulacese. 



Corolla-lobes imbricate in bud Boraginese. 



(34) Flowers bisexual. (35). 



Flowers unisexual or polygamous. (36). 



(35) Leaves simple. (35). 



Leaves compound Ampelidese, (Leea). 



(35) Ovary-cells 1-ovuled Sapotacese. 



Ovary-cells more than 2-ovuled Styracese. 



(36) Petals contorted, sepals accrescent Ebenaceae. 



Petals imbricate Oleacese. 



(37) Leafless herbs. (33). 



Leafy herbs, shi-ubs, or trees. (40). 



(38) Stamens 4, didyiiamous, anthers 1-2 -celled. (39). 



Stamens 2, anther-cells confluent Lentibulariacese. 



(39) Ovaiy 1- celled, placenta 2, parietal Orobauchaceie. 



Ovary 2-celJed, placenta 2, axile, anthers 1-celled. Scrophulariaceae, 



(Striga). 



