20 FRUCTIFICATION, Oil FI.OWEU AND FRUIT. 



in the same tribe, for the fleshy external coat, or 

 case, of several kinds of Puff-ball, and those 

 Agarics, which constitute Persoon's genus of 

 Amanita. See fig. 129, a- and b. 



54. Corolla, the Corolla, or inner integument of a 

 Flower, generally more dilaled, delicate, and co- 

 loured, than the Calyx, is not always present. This 

 organ is supposed to perform some function with 

 respect to air and light, analogous to that of the 

 Leaves ; but limited to the use of the more essen- 

 tial internal organs. It consists frequently of t\vo 

 distinct parts, the Petal and the Nectary. 



55. Petalum, the Petal, is either one or more, regu- 

 lar or irregular; equal or unequal ; transient and de- 

 ciduous, or withering and permanent; variously co- 

 loured; often fragrant ; frequently bearing honey, 

 without any particular apparatus, or Nectary (57). 



56. A Corolla of one Petal, or piece, is called mo- 

 nopetalous ; one of several, poly petal ous. The 

 base of the former is named Tubus, the Tube; the 

 spreading part, variously divided, the Limbits, or 

 Limb. The base of each Petal, in a polypetalous 

 Corolla, is the Uiiguis, Claw ; the expanded part 

 the Lamina, Border. The more or less hollow, or 

 dilated, part, within the mouth, (or eye as it is some- 

 times called,) in both, is denominated Faux, the 

 Throat, and is either open and pervious, or closed 

 with hairs, scales, or valves. 



5". Nectar ium, the Nectary, secretes or contains ho- 



