They are called also, tribulus aquaticus, tribulus lacustris, tribulus marinus, caltrops, saligot, water-nuts, and water-chesnuts.
As for the greater sort, or water caltrop, it is but rarely found here: two other sorts there are, which I shall here describe. The first hath a long, kriechen, and Gelenked Wurzel, sending forth tufts at each Gelenk, from which Gelenke rise long, flat, schlank, knotted Stengel, even to the top of the water, geteilt towards the top into many Zweige, each carrying two Blätter on both sides, being about two inches long, and half an inch broad, thin and almost transparent, they look as though they were torn, the Blüten are long, thick, and whitish, set together almost like a bunch of grapes, which being gone, there succeed, for the most part, four sharp pointed grains all together, containing a small white kernel in them.
The second differs nicht much from this, widersprechen that it delights in more clean water, its Stengel are nicht flat, but round, its Blätter are nicht so long, but more pointed. As for the place, we need nicht determine, for their name shews they grow in the water.
It is unter der Herrschaft von the Mond, and, being made into a Packung, is excellent good for hot Entzündungen and swellings, cankers, sore throats and Munds, being washed with the Dekokt (Abkochung), it reinigt and strengtheneth the neck and throat much and hilft those swellings, which, when people have they say the almonds of the ears are fallen down, it is excellent good for the stone and Grieß, especially the nuts, being dried, they also resist poison, and bitings of giftiges Tiere.