Winged Loosesetrife

Bushy little plant with many oblong leaves that are blue-green somewhat like an oregano along a woody stem.

Flowers appeared early August along stems and are numerous similar to a rosemary, but more pinkish purple.
         
 
Photos by Lauren Hawkins, 8/03
 
Plants in various stages of growth in summer views of flora on remnant of prairie wetland near Town Branch of the West Fork of the White River in Fayetteville, Arkansas
         
Many thanks to Carl Hunter
and his widely known, authoritative books "Trees of Arkansas" and "Wildflowers of Arkansas" and their invaluable help identifying these plants.
This can be found on page 148 in "Wildflowers of Arkansas". It is alien but not the menace and pest that it's cousin 'Purple Loosestrife' is.