2i 4 CALYX OR COROLLA? 



mate so closely to the second floral envelope, that one is always 

 tempted to call them corollas. 



Such are : The red calyx of the fuchsia ; 



The yellow calyx of the furze ( Ulex Europ<zus\ and of a 

 kind of hellebore (Helkborus hy emails] ; 



The rosy calyx of the Christmas rose (Helleborus niger); 



The blue calyx of the larkspur (Delphinium Ajacis); and the 

 Napel aconite (Aconitum Napellus). 



In the Aquilegia vulgaris, and in the Trollius Europczus, the 

 calyx, by the form and colouring of its leaflets, is confounded 

 with the second whorl so completely, that Linnaeus gave it the 

 name of corolla. 



Nevertheless, in the midst of these waverings, which lead us 

 to mistake the calicinal leaflets sometimes for bracts, some- 

 times for petals, we recognise perfectly the foliaceous type. 

 Independently of its colour, which is generally green, the calyx 

 has the same organisation as the leaf; we find in it the same 

 tracheae and the same stomata, the same glands and the same 

 hairs ; the veins and ramifications are also the same ; and, in 

 more than one instance, the calicinal leaflet resumes the char- 

 acter of a veritable leaf. Look, for example, at the five leaflets, 

 united so strongly at the base but so free at the top, arranged 

 in the form of a quincunx, of the hundred-leaved rose. The 

 two external, enlarged, and lanceolate pieces are garnished on 

 the right and left, and often at the point, with tiny foliaceous 

 appendages, which, in every respect, imitate the composite leaf 

 that carries the slender stem. And if we move aside the 

 external or bearded parts of the calyx, we see that the internal 



