44 FAMILI.VR LESSONS IN BOTANY. 



room with its head still inclosed, while Fig. G2 represents 

 the volva bursted and clinging to the stem. 



Fig. 62. -Bursted. 



98. The calyx is rarely wanting in delicate fragile flow- 

 ers, where its evident use, the protection and support of 

 the other organs, is so mnch needed. Bouncing Bet, pinks, 

 and all those flowers whose petals are long and slender at 

 their base, would be blown to pieces by the first breeze but 

 for the sustaining office of this organ. 



99. In the amaryllis, tulip, and hyacinth tribe, we find 

 but one covering for the stamens and pistils, the strong, 

 firm, well-seated petals requiring no aid from the calyx ; 

 and here we find none, or at least what would properly be 

 considered none. I have explained that in botanical analy- 

 sis, if there is but one envelope, it is called a calyx, not a 

 corolla. 



Section II. — Corolla. 



100. Corolla (from the Latin corona, a crown) is the 

 interior envelope, and exhibits every variety of color, form, 

 and texture. Under the subject of calyx I explained to 

 you that sometimes the distinction between the corolla and 

 calyx was not plainly marked ; these are exceptional cases, 

 however, as generally they present a very marked and 



98. In what kind of flowers is the calyx seldom wanting ? 



99. What of the amaryllis ? If there is but one envelope, is it proper tp call 

 it a corolla? 



100. What is the corolla ? What does it signify? Is the diflference between 

 the calyx and corolla ever difficult to determine ? What is generally the case ? 

 What do vegetable physiologists tell us ? 



