LESSON 15.] 



IIIF, CAI.TX AND COROLLA. 



99 



259. Moreover, tlie arranjjoincnt of the parts of tlic flower nnnwers 

 to that of leaves, as illustrated in Lesson 10, — either to a succes- 

 sion of whorls alternalinf^ with each other in the manner of whorled 

 loaves, or in sonic regular form of spiral ariangement. 



LESSON XV. 



MORPHOLOGY OF THE CALYX AND COROLLA. 



260. Havint, studied the flower as a whole, we proceed to con- 

 sider nion; particularly its several parts, especially as to the principal 

 (litrcrences they ytresent in diff'erent plants. We naturally begin 

 witli the leaves of the blossom, namely, the calyx and corolla. And 

 lirst as to 



201. The Growlnil lOSPthrr of Paris. It is this more than anything 

 else which prevents one from taking the idea, at first sight, that the 

 flower is a sort of very short branch clothed with altered leaves. 

 For most blossoms w(? meet with have some of their organs grown 

 trgetiier more or less. ^Ve have noticed it as to the corolla of (le- 

 ranlia, Catalpa, iVc. (Fig. !'.• 1 - I'.m;), in Lesson lo. This growing 



Fin. KW. PiirfpsMK.ii rif »op«Is, potnln, prmlntions between pcialH and itani«n», and true 

 •ikHiMK, uC the Njriniiliaa, ur Wliito VVa(er-Lil>'. 



