Selaginella bryopteris, a lithophytic plant commonly known as sanjeevani
Hanuman was called upon to fetch this herb from the mount Dunagiri (Mahodaya) in the Himalayas or Valley of Flowers.
However, studies have shown that Sanjeevani plant was probably a plant unrelated to the tea plant (Camellia sinensis) and is likely to refer either to Selaginella bryopteris or to Desmotrichum fimbriatum.