heterantha, a 5-15cm in height perennial, inhabits damp
places in the shade of trees in mountainous regions, with stems
having 1-2 vertical rows of hairs. Leaves are opposite-arranged; the
blades are oblanceolate to oval-oblanceolate, 1-4cm long, tapering
off to a short petiole, leaf edges at the bases have sparse hairs,
and tips are sharp. White 1cm-in-diameter five-petaled flowers
appear on the ends of slender peduncles borne at axils. The
reddish-purple anthers make a vivid contrast with the white petals.
Bloom time: April-June.