78 



APPENDAGES OB^ COROLLA 



[CH. 



Silene, and the perianth segments of Narcissus, and, as 

 these are grouped in a circle round the throat of the 

 corolla they are sometimes collectively termed a Corona. 

 Similar scale-like appendages are common in many Boragi- 

 nacege, Apocynaceas, and Gentians, where they often take 

 the form of fringes ; as these are not always strictly 

 ligules, the more general term appendiculate is frequently 

 applied to the throat in these cases. 



Fig. 24. A and B, polypetalous hypogynous corolla of Horse-chestnut ; 

 C, single petal showing claw and limb ; D, polypetalous perigyuous corolla 

 of Blackthorn; E, gamopetalous, epigynous rotate corolla of Guelder 

 Rose; F, gamopetalous tubular-campanulate, hypogynous corolla of 

 Privet. 



Since few of these peculiarities apply to the trees 

 and shrubs to be considered, I pass by further details. 



