ANALYTICAL KEY. 



The calyx and corolla together of either more or less than six parts* ........ CLASS I 



The calyx and corolla together of 6 parts: 

 Stamens 6 or leas .................................................. CLASS H 



Stamens 9; ............................. Umbellularia, p. 106, or Eriogomun, 105 



Stamens 10; united sepals 5 .................................... Leguminosae, 38 



Stamens many; caducous sepals 2 .............................. Fapaveraceae, 20 



Stamens many; sepals 3 .......................................... Sagittaria, 122 



CLASS I. EXOGENS OR DICOTYLEDONS. 



Calyx and corolla both present. 



Petals not united (free) ............................................ Division 1 



Petals more or less united (cohering) ............................... .Division 2 



Corolla wanting; calyx often petaloid, sometimes wanting ................ Division 3 



DIVISION L 



A, Stamens more than 10 and more than double the number of 

 petals. 



1. HYPOGYNOUS, t. e., on the receptacle (not adhering to the sepals or petals). 



* Pistils few to many distinct carpels, rarely one. 

 Calyx deciduous, sepals 5 ..................................... Ranunculaceae, 16 



Calyx caducous, sepals 2 or 3 ................................... Fapaveraceae, 20 



Calyx persistent, sepals 3 or 4; aquatic plants ................... Nymphaeaceae, 20 



Calyx persistent; leaves all radical .................................. Rosaceae, 49 



Calyx petaloid; corolla wanting ................................ Ranunculaceae, 16 



* * Pistil one and compound, as shown by two or more stigmas, or more tlian one cell in the 



ovary. 

 Petals more numerous than the sepals. 



Indefinitely numerous, slender, persistent; aquatic plants ..... Nymphaeaceae, 20 



Just twice as many (4-6); sepals caducous .................... Papaveraceae, 20 



Five to sixteen; sepals persistent; fleshy herbs .............. Portulacaceae, 29 



* Maiawthemum (seep. 115) has a 4-parted perianth; 4 stamens and 2 or 3 parallel-reiued leare*. 



