a native of Europe, now grows wild on roadsides or banks; stems
branch out twice and rise to 10-30cm in height. Leaves are of
opposite phyllotaxis, 2-4cm in length, in an oblong-ovate to
long-oblong shape, and feel soft. Branch tips give birth to closely
set approximately 2mm-in-length light blue small flowers, and
long-oblong bracts are conspicuous. Bloom time: May-June.