Corolla pentamerous, gamopetalous
and caducous, with valvate aestivation, presumably rotate and reflexed.
The flowers are complete, gamopetalous
, zygomorphic and with a short stalk.
The bowl shaped corolla is subsessile, pedicel 1-2 mm long; sepal 5, connate at the base, 5 to 10 x 2 to 4 mm; corolla 5, gamopetalous
, actinomorphic, isostemone, epipetalous stamens, alternate with the corolla lobes, ovary bicarpelar, superior, 1 to 2 ovules/locule.
They are gamopetalous
, zygomorphic, pubescents, tubulars, bilabiates, with four petals, hypogynous, syncarpic gynaeceum with two carpels, upper ovary, white-green style, yellow- greenish stigma.
Calyx and corolla gamopetalous
or polypetalous and sometimes not well differentiated, rotate, campanulate, urceolate, or tubular.