ANALYTICAL KEY 15 



Ovaries 2 or more, separate RANUNCULACEAE, 392 



Ovary single. 



Ovary 5-celled, 5-beaked ; leaves scattered Penthorum, 442 



Ovary 3-5-celled ; leaves opposite or whorled AIZOACEAE, 377 



Ovary 1-2-celled. 



Leaves compound RANUNCULACEAE, 392 



Leaves simple. 



Calyx of separate sepals CARYOPHYLLACEAE, 377 



Calyx 5-toothed or -cleft Glaux, 647 



Calyx 4-toothed LYTHRACEAE, 591 



m. Ovary and pod inferior. 



Ovary 6-celled ; stamens 6-12 ARISTOLOCHIACEAE, 351 



Ovary 4-celled ; stamens 4 Ludvigia, 594 



Ovary 1-celled ; stamens 8-10 Chrysosplenium, 448 



X. Both calyx and corolla present n. 

 n. Corolla of separate petals o. 



o. Stamens numerous, at least more than 10 (rarely 9-10 in Pola- 

 nisia), and more than twice as many as the sepals or calyx- 

 lobes p. 



p. Calyx entirely free and separate from the pistil or pistils q. 

 q. Pistils several or many, wholly distinct or united at base 



into a strongly lobed or several-beaked ovary r. 



r. Aquatics with peltate leaves NYMPHAEACEAE, 389 



r. Terrestrial plants. 

 Climbers. 



Leaves alternate MKNISPERMACEAE, 410 



Leaves opposite Clematis, 402 



Not climbing. 



Filaments united into a tube MALVACEAE, 566 



Filaments not united. 



Leaves opposite, entire CALYCANTHACEAE, 409 



Leaves alternate. 



Stamens on the calyx ROSACEAE, 454 



Stamens on the receptacle or disk. 

 Trees or shrubs. 



Sepals and petals imbricated MAGNOLIACEAE, 408 



Sepals and petals valvate ANONACEAE, 410 



Herbs RESEDACEAE, 439 



q. Pistils strictly one as to ovary; the styles or stigmas may 



be several s. 



9. Leaves punctate with translucent dots HYPERICACEAE, 571 



8. Leaves not punctate t. 

 t. Ovary simple, 1-celled. 



Ovules 2 ROSACEAE, 454 



Ovules many. 

 Leaves 2-3-ternately compound or dissected 



RANUNCULACEAE, 392 



Leaves peltate, lobed Podophyllum, 411 



t. Ovary compound. 

 Ovary 1-celled. 



Sepals 2 (rarely 3), caducous; juice milky or col- 

 ored; placentae parietal PAPAVERACEAE, 414 

 Sepals 2; juice watery; placentae central PORTULACACEAE, 387 



