Wahlenbergia marginata, a
perennial herb 20-40cm in height, occurs on sunny roadsides,
embankments, or lawns; stems are slender and sparsely branched.
Leaves on lower portions are 2-4cm long, 3-8mm wide, in the shape of
a spatulate or oblanceolate, with white, in many cases, obtuse wavy
serrations on margins. Branch tips singly set blue-purple flowers
that face upward. Sepals measure 2-3mm in length, are lanceolate-shaped,
and erect. Corollas are funnel-like bell-shaped and deeply cleft in
five; stamens are five in number, and pistils are one. The fruit
measures 6-8mm in length. Bloom time: May-August.