Artemisia is named for the goddess Artemis protectress of all things wild, of women and was thought to bring things back to health.  She is goddess of the hunt, a virgin, twin sister of the god Apollo.
The genus encompasses many species several of which are found in Texas
Medicinally in general it is a bitter stimulant with particular effects on the uterus. The aromatics kill germs topically.
http://botanical.com/site/column_susun/susun_amazingartemisias.html
http://www.arthistory.sbc.edu/imageswomen/papers/coffeyartemis/artemis.html
http://www.witchipedia.com/herb:mugwort
http://botanical.com/botanical/mgmh/m/mugwor61.html