CALYX. COROLLA. il 



room, and afterwards bursting as the plant enlarges, 

 and frequently leaving a lacerated ring upon the 

 stalk, fig. 7, pi. 2. 



The Calyx either falls off at the first opening 

 of the petals, after their expansion and before the 

 dropping of the flower, or continues with the seed. 

 The terms employed to express these periods of 

 duration are Caducous, Deciduous, Persistent. 



The Corolla is either 



Monopetallous, as in Deadly nightshade (Atropa) 



fig. 1, pi. 1. 

 Dipetallous, of two petals, as in Enchanter's 



nightshade, (Circea) fig. 1, pi. 7. 

 Tripe tallous, of three, as in Frog-bit, (Hydro- 

 charis,) fig. 2, 



Tetrapetallous, of four, as in Wall-flower, fig. 3. 

 Pentapetallous, of five, as in Cistus, fig. 4. 

 Polypetallous, of many petals, as in Water-lily, 

 (Nymphsea) fig. 5. 



A Monopetallous corolla consists of two parts : 

 The Tube, « and the Limb, h fig. 3^ pi. g. 



It is either 



Campanulate, bell-shaped, as in Bell-flower, 

 (Campanula) fig. 1. 



