Plumbagineous \Plum`ba*gin"e*ous\
(pl[u^]m`b[.a]*j[i^]n"[-e]*[u^]s), a. (Bot.)
Pertaining to natural order ({Plumbagine[ae]}) of
gamopetalous herbs, of which Plumbago is the type. The order
includes also the marsh rosemary, the thrift, and a few other
genera.
[1913 Webster]