so, that if the lower Sprout be on the left side
of the Branch, the next above is on the right,
and so to the end, not sprouting by pairs.
At the end of each Sprout are generally four sprigs, two at the Extremity, and one on each side, just under it. At the first sprouting of these from the Branch to the Sprig where the leaves grow, they are full of little short white hairs, which wear off as the leaves grow, and then they are smooth as the Branch.
Upon each of these sprigs, are, for the most part, eleven pair of leaves, neatly set into the uppermost part of the little sprig, exactly one against another, as it were in little articulations, such as Anatomists call Enarthrosis, where the round head of a Bone is received into another fitted for its motion; and standing very fitly to shut themselves and touch, the pairs just above them closing somewhat upon them, as in the shut sprig; so is the little round Pedunculus of this leaf fitted into a little cavity of the sprig, visible to the eye in a sprig new pluck’d, or in a sprig withered on the Branch, from which the leaves easily fall by touching.
The leaf being almost an oblong square, and set into the Pedunculus, at one of the lower corners, receiveth from that not onely a Spine, as I may call it, which, passing through the leaf, divides it so length-ways that the outer-side is broader then the inner next the sprig, but little fibres passing obliquely towards the opposite broader side, seem to make it here a little muscular, and fitted to move the whole leaf, which, together with the whole sprig, are set full with little short whitish hairs.
One of these Plants, whose branch seem’d to be older and more grown then the other, onely the tender Sprouts of it, after the leaves are shut, fall and hang down; of the other, the whole branches fall to the ground, if the Sun shine very warm, upon the first taking off the Glass, which I therefore call the humble Plant.
The other two, which do never fall, nor do any of their branches flagg and hang down, shut not their leaves, but upon somewhat a hard stroke; the stalks seem to grow up from a root, and appear more herbaceous, they are round and smooth, without any prickle, the Sprouts from them have several pairs of sprigs, with much less leaves then the other on them, and have on each sprig generally seventeen pair.
Upon touching any of the sprigs
with leaves on, all the leaves on that
sprig contracting themselves
by pairs, joyned their upper superficies
close together.