VERNATION. 13 
134. The pupil should make himself well acquainted with 
these seven modes of e@stivation (so the botanists .call it). 
Other modes are described in larger works. (Class Book of 
Botany, p. 79.) 
135. Also in the leaf-bud we find similar modes of leaf- 
folding (here called vernation, from the Latin vernus, spring, 
as estivation is from e@stivus, summer). The figures follow- 
ing represent cross-sections of various sorts of leaf-buds. In 
the bud of Sycamore the infolding scales are imbricate, but 
the young leaves within are somewhat plicate. 
136. In the leaf-bud of Cherry (Fig. 230) we find the con- 
volute vernation, similar to the wstivation of Wall-flower. 
The leaf-bud of Lilac (Fig. 231) gives us another form of 
imbricate. 
Vernation.—Fig. 225. Unfolding leaf-bud of Tulip-tree,—reclinate. Fig. 226. 
Fern leaf-bud,—circinate. ig. 227. Sedge,—equitant. Fig, 228. Sage,—obvolute, 
Fig. 229. Iris,—equitant. 
137. Fig. 229 represents the vernation of Iris, and Fig. 227, 
of a Sedge-grass. Both are equitant (which means, in Latin, 
134. What is the meaning of the word estivation ? 
135. What is the meaning of the word vernation? Please describe the 
vernation in Sycamore leaf-bud. 
136. In the leaf-bud of Cherry ; Lilac. 
137. What of the equitant vernation? 
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