punas Arid alpine vegetation on high plateaux along the western side of the Andes. It comprises sparse, tufted grasses, and large, hardy, cushion plants. The pamirs of Tibet are a similar vegetation type.

puna Arid alpine vegetation on high plateaux along the western side of the Andes. It comprises sparse, tufted grasses, and large, hardy, cushion plants. The pamirs of Tibet are a similar vegetation type.