A. Gray— Aistivation and its Terminology. 339 
Art. XLIV.—stivation and its Terminology; by ASA 
GRAY. 
THE term estivation, to denote the arrangement of the parts 
of the calyx, corolla, &c., in the bud, as well as that of vernation 
for leaves in a leaf-bud, was introduced by Linneus. He did 
not elaborate the former subject as he did the latter, and the 
m 
penroce to consider, 1, what the leading modes are, and 2, 
ow they are to be designated. 
. In the first place, the modes of estivation may be con- 
veniently divided into two classes, those in which the parts 
not. 
Of teas Ha estivation, only two principal kinds need 
i s 
bodily plaited into folds, or otherwise di n which case 
in which the parts being united into a tube or cup, swe is 
i ae ch cas 
oF cup of a calyx or corolla, or of the disposition of each piece 
capes (whether revolute, involute, reflexed, inflexed, and the 
Hon, there are left three types to deal with : 
