laurel clock vine flower, with a short broad tube, white outside & yellow inside, frilled with 5 roundish, lavender-blue petals

acanthaceae bisexual bloom bloomer blue climber clock cluster corolla family flower flowering folk grandiflora growing herb herbal hermaphrodite india inflorescence laurel laurifolia lavender malaysia medicine ornamental pale perennial petal plant prolific shaped shrub thailand thunbergia tropical trumpet vigorous vine