CALYX. 7 



Double, as in Mallow, (Malva) and Altlicea, 

 figs. 2, 3. 



Imbricated (composed of many leaves overlap- 

 ping each other) as in Cat's-ear, (Hypochaeris) 

 fig. 4. and Thistle, (Cardims) fig. 5. 



Longer than the corolla, as in Corn-cockle, 

 (Agrostemma Githago) fig. 6. 



Equal in length, as in Mouse-ear-chickweed, 

 (Cerastium) fig. 7. « or 



Shorter, as in Bindweed, (Convolvulus) fig 8. 

 It is either 



Monophyllous, (formed of one leaf) as in Cam- 

 pion, (Lychnis) fig. 1, pi. 4. 



Diphyllous, (of two leaves) as in Poppy, (Papa- 

 ver) fig. 2. 



Triphyllous, (of three) as in Water-plantain, 

 (Alisma) fig. 3. 



Tetraphyllous, (of four) as in the Wall-flower, 

 (Cheiranthus) fig. 4. 



Pentaphyllous, (of five) as in Ranunculus, fig- 5. 



Hexaphyllous, &c. 



A Monophyllous Perianth is either 

 Entire, (undivided) 

 Bifid, (divided into two segments) 

 Trifid, (into three segments) 

 Quadrifid, (into four) or 

 Pentafid (into five) as figs. 6, 7, 8. 



The segments are either equal or unequal : 



