Note l — BOOK X.

Of Bulbous, and a great many more, probably of the far greater Number of Perennial Roots of Herbs, as Arum, Rape-Crowfoot, &c. it is very observable, that their Root is annually renewed, or repaired out of the Trunk or Stalk it self. That is to say, the Basis of the Stalk continually, and by insensible Degrees descending below the Surface of the Earth, and hiding it self therein, is thus both in Nature, Place and Office, changed into a true Root.——So in Brownwort, the Basis of the Stalk sinking down by Degrees, till it lies under Ground, becomes the upper Part of the Root; and continuing still to sink, the next Year becomes the lower Part: And the next after that, rots away; a new Addition being still yearly made out of the Stalk, as the elder Parts yearly rot away. Grew. ibid. L. 2. pag. 59. ubi plura vid.