amygdalinus

The Hebrew word is rendered in the Vulgate by amygdalinus, "the almond-tree," which is probably correct.

Easton's Bible Dictionary M.G. Easton 1897

_Agaricus amygdalinus_ Curt., from North Carolina, and of which no description was published, was so named on account of the almond-like flavor of the plant.

Studies of American Fungi. Mushrooms, Edible, Poisonous, etc. George Francis Atkinson 1886