Tillandsia : Otherwise known as air plants, this is a massive genus with many hundreds of species, most which are impossible for someone like me to tell apart. Almost all these are air plants, though a few can be grown in soil; or are epiphytic. Their leaves tend to be whitish and scaly, though some smooth green varieties exist. Many have twisted, bizarre leaf patterns and some come in spectacular shades of red and pink. Their flowers tend to be quite colorful with some being simply incredible, while others are small and subtle. These are not monocarpic plants so with proper care, you can keep these plants around for dozens of years. For the most part, Tillandsias seem to tolerate more direct sun than most other epiphytic bromeliads, though many still cannot tolerate our blistering summer sun here in California. And most being air plants, over watering is less of an issue (still, I have rotted a few that way.)
In India, particularly, it is popularly known by a variety of names: bengsag, brahma manduki, brahmanduki, brahmi, ondelaga or ekpanni (south India, west India), sarswathi aku (Andhra Pradesh), gotu kola, khulakhudi, mandukparni, mandookaparni, or thankuni (Bengal), depending on region. Bacopa monnieri is the more widely known Brahmi ; both have some common therapeutic properties in Vedic texts and are used for improving memory. C. asiatica is called brahmi particularly in north India,   although that may be a case of mistaken identity introduced during the 16th century, when brahmi was confused with mandukaparni , a name for C. asiatica .   Probably the earliest study of mandookaparni as medya rasayana (improving the mental ability) was carried out at the Dr. A. Lakshmipathy Research Centre (now under CCRAS).