vĭŏlārĭum, ii, n. [viola],
a bed or bank of violets , Varr. R. R. 1, 35, 1; Verg. G. 4, 32; Hor. C. 2, 15, 5; Ov. F. 4, 437; Col. 10, 259.
violārium ī, n viola, a bank of violets, violet-bed : bibant violaria fontem, V.: huic sunt violar...
An Elementary Latin Dictionary