376 Key to the System of 



Bracteoles large, equalling or surpassing the calyx ... 1651 



1651. Flowers rather small. 



Sylvan, rather extensively climbing, often glabrous ; leaves 

 from lanceolar-arrowshaped and deltoid to narrow - 

 lanceolar, the basal lobes diverging, acute ; flowers 

 axillary, solitary, on very angular stalks ; bracteoles 

 from ovate- to orbicular- cordate ; corolla pink or pale ; 

 fruit incompletely two-celled. C. marginatus. 



Flowers very large. 



Riparian, widely climbing or trailing or on coast-land 

 creepingly prostrate ; sap copious, white ; leaves large, 

 from cordate- to ovate-arrowshaped, almost membranous, 

 or on maritime plants renate and somewhat succulent, 

 the basal lobes often angular ; flowers axillary, solitary, 

 long-stalked ; bracteoles mostly lanceolar-ovate ; corolla 

 rosy red, pale -pink or quite white ; fruit one-celled. 



C. sepium. 



WIX.SONXA. 



1652. Somewhat shrubby. 



Restricted to saline ground, never tall, but much branched, 

 thinly but closely beset with grey silky : shining vestiture, 

 occasionally spinescent ; leaves minute but thick, mostly 

 crowded in two rows, sessile, from lanceolar- to orbicular- 

 ovate, above concave ; flowers very small, axillary, solitary, 

 sessile ; corolla-tube about as long as the calyx ; fruit en- 

 closed, globular-ovate. W. huniilis. 



Quite herbaceous ... ... ... 1653 



1653. Corolla-tube about as long as the calyx. 



Quite dwarf, somewhat invested with scattered hairlets ; 



leaves minute, from orbicular to ovate, thick, rather flat ; 



flowers very small, axillary, solitary, sessile ; calyx 



outside beset with silk-like vestiture ; fruit enclosed, 



ovate-globular. W. rotundifolia. 



Corolla-tube conspicuously longer than the calyx. 



Quite dwarf, almost glabrous ; leaves from elliptic to broad- 

 linear, somewhat succulent ; flowers small, axillary,' 

 solitary, sessile ; calyx without any outside vestiture ; 

 corolla whitish ; stamens long -exser ted ; fruit enclosed, 

 ovate -globular. W. Backhousii. 



