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)

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

usnea, = term for a lichen, derived from the Arabic word ushnah, = moss or lichen; also meaning 'rope like'.
(I22)

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)
(insectivorous sacs)
(rootless herbs with small bladder-like outgrowths on branched organs in soil or water, which bladders enable the plant to capture insects)
(ld, BL, Le)