104. . THE NECTARY. 
in the description of the Natural Orders, under Composite, 
or in the account of the Linnzan System. 
Ix. THE ZSTIVATION, 
386. The various parts of the flower are folded in differ- 
ent ways in the bud, and in this state afford excellent cha- 
racters for the distinction of natural orders. The arrange- 
ment of the parts has received the name of estivation or pre- 
floration. 
The estivation is 
387. Imbricate, when each petal covers a small portion of 
the adjoining one, as in many of the Umbellifere. 
388. Valvate, when the petals touch each other only by 
their margins, as in the Araliacez. 
389. Folded (plicata), or plaited, when a monopetalous 
corolla is regularly folded, as in the Convolvulacee, and 
many of the Solanex. 
390. Corrugate, when the petals are irregularly folded and 
wrinkled or crumpled, as in the Ciste, and Papaverace®-— 
_ 391. Contorted or twisted, as in the Apocynez. 
Ps 
X. THE NECTARY. 
_ which is the nectary. In the violet, the lower petal is 
_ Spurred at the base, or has a nectary: in the Crowfoot 
_ (Ranunculus), each petal has a small square body, or nectary, 
atthe base. The term is applied to the elongation of the 
calyx in the Indian Cress (Tropaolum majus) ; to the glands 
