Botanical name : Parmelia perlata (Huds.) Ach.
Family : Parmeliaceae
SANSKRIT SYNONYMS
Saileyam, Silapushpa
AYURVEDIC PROPERTIES
Rasa    : Tikta
Guna   : Lakhu
Virya   : Seeta
PLANT NAME IN DIFFERENT LANGUAGES
English  : Stone flower, Litho lichen
Hindi  : Chadeela, Pathar ka phool
Malayalam : Cheleyam, Kalpoov
Distribution – Throughout India, in rocky areas, old tree trunks. 
PLANT DESCRIPTION
A lichen growing on the substratum in irregular fashion. It is composed of a symbiotic colony of fungi and alga. Reproduction by spores, dispersed by wind.    
MEDICINAL PROPERTIES
Plant pacifies vitiated kapha, pitta, wounds, infections, inflammation, skin diseases, diarrhea, dysentery, cough, fever and renal calculi.
Useful part : Whole lichen.