unus, = one, alone,only, sole, single; gigno, gignere, genui, genitum, = to beget, bear, bring forth, produce. unigena, = only-begotten. only; of one or the same family.
(ld)

Possibly for Johann Heinrich Ursinus of Regensburg (1608-1666).**
(Ch)

usnea, = term for a lichen, derived from the Arabic word ushnah, = moss.
(Int)

uro, = to burn, i.e. to scorch; to sting or pain acutely. urtica, = a nettle, stinging-nettle.
(ld)

uter, = a bag or bottle made of an animal’s hide or a skin for wine, oil, water, etc.; -culus, = diminutive; utriculus, = of plants, a bud or calycle of a flower, a hull or husk of grain; -alis, -aris, = belonging or pertaining to, resembling, provided with. utricularius, = a bagpiper; the master of a raft floated on bladders used for ferriage. (bladder-like, bladdery, possessing bladders, inflated) (insectivourous sacs) (rootless herbs with small bladder-like outgrowths on branched organs in soil or water, which bladders enable the palnt to capture insects)
(ld, BL, Le)