XXV111 ANALYTICAL KEY. 



Ovary wholly inferior in perfect or pistillate flowers. 



Aquatic herbs : ovary 3-4-celled, or (Hippuris) 1-celled. 129 HALORAGEJS. 

 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 LORANTHACE^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 dioecious. 380 EL^AGNACE^E. 

 Herbs : calyx colored like a corolla : flowers perfect. 360 (74) NYCTAGINACE^. 

 Ovary plainly free from the calyx, which is sometimes wanting. 

 Stipules (ochreae) sheathing the stem at the nodes. 



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



Herbs : calyx present and often colored. . 371 (75) POLYGONACE^E. 

 Stipules not sheathing the stem, or none. 

 Aquatic herbs, submersed or nearly so. 



Leaves whorled-dissected : style 1. . . 383 CERATOPIIYLLACE;E. 

 Leaves opposite, entire : styles 2 : ovary 4-celled. 384 CALLITRICHACE^E. 

 Not aquatics, herbs. 



Ovary 10-celled : berry 10-seeded. . . 361 PHYTOLACCACEJE. 

 Ovary 3-celled, rarely 1 - 2-celled : juice milky. 385 (76) EUPHORBIACE^E. 

 Ovary one-celled : juice not milky. 



Style and tufted stigma one, or rarely two : leaves 



pinnate and with stipules. . Sanguisorba, 110 ROSACEJE. 



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



no scarious bracts around the flowers. . . 394 URTICE^J. 



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

 Stipules not scarious : leaves palmately cleft 



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



Stipules scarious 54 ILLECEBRE^E. 



Stipules and scarious bracts none : stamens 



inserted high up on the tube of the calyx. 54 SCLERANTIIE^:. 

 Stipules none : but scarious bracts crowded 



around the flowers. . . . 367 (75) AMARANTACE;E. 

 Stipules and scarious bracts none. 361 (74) CHENOPODIACE^E. 



Shrubs or trees. 



Ovules a pair in each cell of the ovary. 

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



Fruit 2-celled, a double samara 82 ACERIM..K. 



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

 Ovules single in each cell of the 



Three -9-celled ovary: leaves small and heath-like. 393 EMPETRACE^E. 

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



