224 



ORGANOGRAPHY. 



sepalous or triphyllous for one with three, tetrasepalous or te- 

 traphyllous if it have four, pentasepalous or pentaphyllous if 

 live, kexasepalous or hexaphyllous if six, heptasepalous or kepta- 

 phyllous if seven, and so on. 



A polysepalous calyx is called regular, if it consist of sepals 

 of equal size and like form arranged in a symmetrical manner, 

 as in the Buttercup (Ranunculus) and Strawberry {fig. 441); it 

 is irregular when these conditions are not complied with, as in 

 the Monkshood {Aconituni) (fig. 442). 



Fig. 442. 

 Fig. 441. 



Fig. 441. Flower of Strawberry {Fragaria) with a regular polysepalous 

 calyx surrounded by a whorl of leafy organs, to which the names of epi- 



calyx and involucre have been applied. Fig. 442. Flower of Monkshood 



iAconitum A^ajiellus) with an irregular polysepalous calyx. The upper 

 sepal is helmet-shaped or galeate. 



2. MONOSEPALOUS, MONOPHTLLOUS, OR GaMOSEPALOUS 



Calyx. — When the sepals are united so as to form a mono- 

 sepalous calyx, various terms are used to indicate the degree of 

 adhesion. Thus, the union may only take place near the base, 



Fig. 443. 



Fig. 444. 



Fig. 445. 



Fig. 443. Partite calyx of the Pimpernel iAnagallia) Fig. 444. Cleft or 



flnsured calyx of the Centaury (Erythraa) Fig. 445. Dentate or toothed 



calyx of Campion (.Lydmia). 



