Easton's Bible Dictionary (1897)
Wild broom, a station in the wilderness (Num. 33:18, 19), the “broom valley,” or “valley of broombushes,” the place apparently of the original encampment of Israel, near Kadesh.
Smith's Bible Dictionary (1863)
(heath), a march-station in the wilderness, (Numbers 33:18,19) Probably northeast of Hazeroth.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
RITH'MAH (broom), a station of Israel, Num 33:18-19, named from retem or rethem, "the broom," a species of low bush growing in the wilderness. Some regard it as being the same as "Kadesh" of Num 13:26; Rowlands suggests that it is at Sahel er-Retmah, west of 'Ain Kadesh, which he makes Kadesh.
Hitchcock's Bible Names (1869)
juniper; noise