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Updated: June 22, 2025
The pupils have described the folding of the leaves in some of their specimens. In the Beech, the leaf is plicate, or plaited on the veins. In the Elm, Magnolia, and Tulip-tree, it is conduplicate, that is, folded on the midrib with the inner face within. In the Tulip-tree, it is also inflexed, the blade bent forwards on the petiole.
This, perhaps, is the earliest and most primitive application of the principle embodied in the wommera. In the third method the midrib is similarly severed and the web peeled for about two inches; but the stalk is held in the hand, and, being jerked forward, the midrib being torn from the web flies off, though not under accurate control as to direction.
This is effected by the stalk or midrib between the leaf and the pitcher coiling round any support. The twisted part becomes thicker; but I observed in Mr. Veitch's hothouse that the stalk often takes a turn when not in contact with any object, and that this twisted part is likewise thickened.
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