THE CALYX. 



47- 



Erythrcea, fig. 204) ; — ^it is hi- tri- multi- dentate or -toothed (c. dentatus), when tlie sepals 

 are united nearly to the top {Lychnis, fig. 205). 



In the monosepalous calyx, the connected portion of the sepals is the tube 

 [tubus), the free portion the limb {limbus), and the point of union 

 of these the throat {faux) . 



Sepals are sometimes prolonged into appendages at the base, 

 as in Myosurus (fig. 206) and Heartsease 

 (fig. 500), where the five sepals are 

 attached to the receptacle by their 



centres ; in some Campanulas (fig. 207) the appendage is formed by the union of 

 two lobes belonging to two contiguous sepals, between which it is placed. 



The calyx is regular (c. regularis, wqualis), when its sepals, whether equal or 

 unequal, form a symmetrical whorl {Wallfiower, fig. 8; Pimpernel, fig. 203 ; Erythrcea, 

 fig. 204 ; Lychnis, fig. 205) ; — it is irregular (c. irregularis, inwqualis) , when the whorl 

 is unsymmetrical {Lamium, fig. 208). In the Aconite the upper sepal forms a hood ; 

 in Larkspur (fig. 209) it is prolonged into a hollow horn or spur. In the Tropoeolmm 

 (fig. 210), the spur is. formed by the united and lengthened three upper sepals. In 

 Pelargonium the upper sepal is produced downwards, and forms a tube adherent 

 to the pedicel. In Scutella/ria the five sepals form two lips ; of which the upper 



211. Scutellaria. 

 Young calyx. 



210. Tropoeolum. Howerwitli calyx 

 prolonged into a hollow horn or spur. 



212. Scutellaria. 

 Bipe calyx. 



214. Henbane, 

 tirceolate calyx. 



213. Winter Cherry. 

 Vesicular calyx. 



protuberant one (fig. 211), after flowering, forms a shield to the ovaries, arching 

 over them so as completely to envelop them, and meet the lower lip (fig. 212). 



The tube of the monosepalous calyx may be cylindric [cylindricus, Pink, fig. 226) ; 

 — cwp-shaped {cwpuliformAs, Orange) ; — club-shaped {clavata, claviformis, Silene,Armeria); 

 ^-bladdery {vesiculosus), when swollen like a bladder {Winter Cherry, fig. 213); — tur- 

 binate {Iwbinatus), when it resembles a top or pear {Black Alder) ; — bell-shaped 



