Plants like Swertia Barunensis (4200m) and Potentilla Makaluensis (4000 m) nomenclature under the name of river Barun and Mt. Makalu are found only in this area in the entire world. 87 Himalayan medical herbs including Yasrha Gumba and Panch Aule are found here. Panch Aule is a fingered root plant (five fingers max) where fingers indicate the age of the plant in a year.