XXV.ll ANALYTICAL KEY. 



Ovary wholly inferior in perfect or pistillate flowers. 



Aquatic herbs : ovary" 3 - 4-celled, or (Hippuris) l-eclled. 129 HALORAOEA 

 Woody plants : style or stigma one, entire : ovary 1 -celled. 



Stigma running down one side of the style. Nyssa, 160 CORNACE^E. 



Stigma terminal, with or without a style. 



Parasitic on the branches of trees : anthers sessile. 382 LORAXTIIACE^E. 

 Not parasitic above ground : anthers on filaments. 381 SANTALACE.*:. 

 Ovary really free from the calyx, but permanently invested 



by its tube, or the base of it, so as to seem inferior. 



Shrubs, with scurfy leaves : flowers mostly clio3cious. 380 EL^EAGNACEJE. 

 Herbs : calyx colored like a corolla. 



Leaves opposite, simple. , . ... 360 (74) NYCTAGIN ACE.E. 



Leaves alternate, pinnate Sanguisorba, 110, ROSACES. 



O'ary plainly free from the calyx, which is sometimes wanting. 

 Stipules (ochrose) sheathing the stem at the nodes. 



Tree : calyx none : flowers monoecious, in heads. 400 PLATANACK/E. 



Herbs: calyx present and often colored. . 371 (75) POLYGON AC i-;.*. 

 Stipules not sheathing the stern, or none. 

 Aquatic herbs, submersed or nearly so. 



Leaves whorled-dissected : style 1. . . 383 CERATOrriYLLACE^E. 

 Leaves opposite, entire : styles 2 : ovary 4-cclled 384 CALLITKJCHACE.I?. 

 Not aquatics, herbs. 



Ovary 10-cclled: berry 10-seeded. . . 361 PIIYTOLACCACEJK. 

 Ovary 3-celled, rarely 1 - 2-ccllcd : juice milky. 385 (76) EUPIIOUBIACE.K. 

 Ovary one-celled : juice not milky. 

 Style, if any, and stigma only one : leaves simple: 



no scarious bracts around the flowers. . . 394 URTICE*. 



Style or stigmas 2 or 3 : embryo coiled or curved. 

 Stipules not scarious : leaves palmatcly cleft 



or palmately compound. . . 395 (76) CANNABTNEJS. 



Stipules scarious 54 ILLECEUKE,C. 



Stipules and scarious bracts none : stamens 



inserted high up on the tube of the calyx. 54 SCLERANTHE*:. 

 Stipules none : but scarious bracts crowded 



around the flowers. . . . 367 (75) AMARANTACEA:. 

 Stipules and scarious bracts none. 361 (74) CUENOPODIACE.B. 



Shrubs or trees. 



Ovules a pair in each cell of the ovary. 

 Fruit a 3-cclled pod : leaves evergreen. Buxus, (76) EuriiORniACE^:. 



Fruit 2-celled, a double samara 82 ACKRINEJG. 



Fruit a 1-celled 1-seedcd samara or drupe. . 356 (73) OLEACE.E. 

 Ovules single in each cell of the 



Three -9-celled ovary : leaves small and heath-l ! kc. 393 EMPETRACEA 

 Three-celled ovary : leaves broad. ... 78 RHAMNACE.B. 



