64 GAMOPETAL.E. KEY TO THE ORDERS. 
Class Il. Dicotyledons—Gamopetalous. 
Key to the Orders. 
Seres IV. Gaanopetalows—Flowers usually bisexual, regular or irregu- 
lar; ealyx superior or inferior; petals eonnate, formiug 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. (5). 
Stamens epigynous. (11). 
(93) Anthers free. (4). 
Anthers connate. (10). 
(4) Leaves opposite. (5). 
Leaves.alternate. (8). 
(5) Leaves exstipulate. (6). 
Leaves stipulate or whirled. ...........--. eee 2.22... Ivubiacess. 
(6) Herbs. (7). 
Shrubs. Stamens 5, Ovary 1—3-celled............... Caprifoliace:e. 
(7) Flowers not involucellate, bracteate. .................. Valeriacese. 
i«Elowers involucellate3 ee OE T LATTUSEREI EI Dipsace:. 
(SA EESiamenssnumerous mShrubs e I EEEREERRREEEEEELECE Styrace:rm. 
Stamens 5. (9). 
(9) Filaments free, semi-inferior. ........ Campanulace:e, (Sphenoclea). 
Filaments connate, flowers unisexual. ..... .Composits, (Xanthium). 
(dO) Elerbs- or shrubs withbstendriss «eer 2. Cueurbitacesm. 
Herbs. Leaves exstipulate, without tendrils. | Ovary 1-celled, 1-ovuled. 
EN. 2. Composite. 
(11) Stamens 3-5. (12). 
Stamens 8-10, anther-cells spurred... ..... seiseeieieis s. Y BO OLDIaC82. 
(12) Ovary 2-celled, cells 1-ovuled. ....... nb oBODOD odo S E XoXeI Khang Ys; 
Ovary 2-6-celled, cells many ovuled............... Campanulacerge. 
