is a perennial herb found in forests in mountainous regions. Leaves,
measuring 4-6cm in length, are n the shape of a concentric form.
Short white hairs are observable along veins on either side of the
leaves. Calyx tubes are obovate-spherical, approximately 2cm in
diameter; lobes diagonally open in a triangular-ovate way. Stamens
are 6 in number, and styles are 3. Bloom time: April-May.