THE AMERICAN BOTANIST 



91 



27 Petals four, six or eight 

 Flowers borne singly 

 Flowers in racemes and spikes 



24 Stamens not on the receptacle 



On the corolla, stamens forming a tube 

 On the calyx 

 Sepals two 

 Sepals three to five 



Petals imbricated; fruit simple 

 Petals convolute ; fruit compressed 



Papaveraceae. (G. 414. B. 437) 



Resedaceae. (G. 439. B. 4«9) 



Malvaceae. (G. 566. B. G17) 



Portulacaceae. (G. 387. B. 384) 



Rosaceae. (G. 4.54. B. 490) 



Loasaceae. (G. 588. B. 641) 



23 Stamens not more than twice the number of petals (28) 



28 Ovary adherent to the calyx (29) 

 29 Style one, carpels two to six 

 29 Styles more than one 

 Styles two 



Carpels two ; seeds several 

 Carpels two, seeds two 



Styles three to five or more. 

 Ovary one-celled, sepals two 



Onagraceae. (G. ."504. B. 651) 



Saxifragaceae. (G. 444. B. 

 Umbelliferae. (G. 607. B. 



Portulacaceae. (G. 387. B. 

 Ovary three to five celled. Sepals five. Araliaceae. (G. 605. B. 



28 Ovary free from the calyx (30) 

 30 Pistils simple, distinct 

 Five or more 



Stamens once or twice the number of petals 



Crassulaceae. (G. 441 

 Stamens more numerous 

 Pistils one only. 



Stamens united into a tube 

 Stamens not united 

 Stamens five 

 Stamens more than five 

 Once or twice the number of petals 



Berberidaceae. (G. 411. B. 



476) 

 669) 



384) 

 667) 



B. 



Ranunculaceae. (G. 392. B. 



Leguniinosae. (G. 500. B. 

 VIolaceae. (G. 579. B. 



More numerous 



Ranunculaceae. (G. 392. B. 



Oxalidaceae. (G. 532. 

 Linaceae. (G. 532. 



B. 

 B. 



30 Pistil compound 



Four or five-celled 

 Juice sour 

 Juice not sour 



Less than four-celled. 

 Two-celled. 



Stamens six, tetradynamous Cruciferae. (G. 418. B 



Stamens four to eight, equal. Polygalaceae(G. 538. B 

 One-celled. 



Stamens four to thirty-two, separate. 



Capparadaceae. (G. 438. B. 

 Stamens six or less. 



Stamens six, diadelphous Fumariaceae. G. 416. B 



Stamens five; styles 3 to 5 Droseraceae. (G. 440. B 



473) 

 411) 



532) 



633) 



432) 

 411) 



575) 

 578) 



443) 



582) 



467) 



437) 

 470) 



