Barometz

Much wonder is made of the Boramez, that ſtrange plant-animall or vegetable Lamb of Tartary, which Wolves delight to feed on, which hath the ſhape of a Lamb, affordeth a bloudy juice upon breaking, and liveth while the plants be conſumed about it; and yet if all this be no more then the ſhape of a Lamb in the flower or ſeed, upon the top of the ſtalk, as we meet with the formes of Bees, Flies and Dogs in ſome others, he hath ſeen nothing that ſhall much wonder at it.

Source: wiktionary

Cradled in ſnow and fann'd by arctic air / Shines, gentle Barometz! thy golden hair; / Rooted in earth each cloven hood deſcends, / And round and round her flexile neck ſhe bends; / Crops the grey coral moſs, and hoary thyme, / Or laps with roſy tongue the melting rime; [...]

Source: wiktionary

[...] I say to you what I should say if any little Barometzes should come under my care. It is more on the imaginary side than the matter of fact.

Source: wiktionary

It seemed to be at least as good a vegetable lamb as Lepas was an unripe vegetable bird, and one version of the story itself is probably explained by it. That is the version in which the barometz grows out of the ground, being attached to its root system by its umbilical cord and capable of feeding only as far as that cord will reach—a perfect counterpart to the Jidra of the Talmud.

Source: wiktionary