64 GAMOPETAL.E. KEY TO THE ORDERS. 



Class II. Dicotyledons Gamopetalous. 



Key to tlic Orders. 



Series IV. Gamopetalmis Flowers usually bisexual, regular or irregu- 

 lar ; calyx superior or inferior ; petals connate, forming an entire or cleft or 

 lobed corolla, rarely free to a little above the base; stamens epipetalous, 

 hypogynous or epigynous. 



( 1 ) Ovary inferior, or semi-inferior. (2). 

 Ovary superior. (13). 



( 2 ) Stamens, epipetalous. (3). 

 Stamens epigynous. (11 j. 



( 3 ) Anthers free. (4). 



Anthers connate. (10). 

 (4) Leaves opposite. (5). 



Leaves alternate. (8). 

 ( 5 ) Leaves exstipulate. (6). 



Leaves stipulate or whirled Rubiacr;r. 



(6) Herbs. (7). 



Shrubs. Stamens 5, Ovary 1-3-celled Caprifoliaceae. 



( 7 ) Flowers not involucellate, bracteate Valeriacere. 



Flowers involucellate Di psacese. 



( 8 ) Stamens numerous. Shrubs Sty racese. 



Stamens 5. (9). 

 ( 9 ) Filaments free, semi-inferior. Campanulaceae, (Spluenodea}. 



Filaments connate, flowers unisexual Composite, (Xanthmm). 



(10) Herbs or shrubs with tendris. Cucurbitaceee. 



Herbs. Leaves exstipulate, without tendrils. Ovary 1-celled, 1-ovuled. 



Composite. 



(11) Stamens 3-5. (12). 



Stamens 8-10, anther-cells spurred Vacciniacene. 



(12) Ovary 2-celled, cells 1-ovuled Goodenovese. 



Ovary 2-6-celled, cells many ovuled. Campanulacese. 



