ANALYTICAL KEY 



15 



Penthorum, 442 

 AlZOACEAB, 377 



Ranunculaceae, 392 



Caryophyllaceae, 377 



Glaux, 647 



Lythraceae, 591 



Aristolochiaceae, 351 



Ludvigia, 594 



Chrysosplenium, 448 



Ovaries 2 or more, separate Ranunculaceae, 



Ovary single. 

 Ovary 5-celled, 5-beaked ; leaves scattered 

 Ovary 3-5-celled ; leaves opposite or whorled 

 Ovary 1-2-celled. 

 Leaves compound 

 Leaves simple. 

 Calyx of separate sepals 

 Calyx 5-toothed or -cleft 

 Calyx 4-toothed 

 m. Ovary and pod inferior. 



Ovary 6-celled ; stamens 6-12 

 Ovary 4-celled ; stamens 4 

 Ovary 1-celled ; stamens 8-10 

 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 

 Leaves opposite 

 Not climbing. 

 Filaments united into a tube 

 Filaments not united. 

 Leaves opposite, entire. 

 Leaves alternate. 

 Stamens on the calyx 

 Stamens on the receptacle or disk. 

 Trees or shrubs. 



Sepals and petals imbricated 

 Sepals and petals valvate 

 Herbs 



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

 be several s. 

 s. Leaves punctate with translucent dots Hypericaceae, 571 



s. Leaves not punctate t. 

 t. Ovary simple, 1-celled. 



Ovules 2 Rosacbae, 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 Portulacackak. 387 



Menispermaceae, 410 

 Clematis, 402 



Malvaceae, 566 



Calycanthaceae, 409 



rosaceae, 454 



Magnoliaceae, 408 



Anonaceae, 410 



Resedaceae, 439 



