The Humble Leaf That Became a Household Legend Some herbs arrive with ceremony.Others become beloved quietly — through kitchens, courtyards, grandmothers, school lunches, herbal wisdom, and long familiarity. Vallarai, known botanically as Centella asiatica and also widely called Gotu Kola, belongs to the second kind. It did not become popular because of modern trends. It became popular because generations kept finding it useful, memorable,…