Qualitative analysis of phytochemicals of P.djamor revealed the presence of anthroquinones, flavonoids, saponins, tannins, and terpenoids. Cardiac glycosides and steroids were absent. The total amount of phenolic content present in the P.djamor extract was found to be 32.55 ± 0.21 mg/g gallic acid equivalent of phenols and flavonoid content was 1.53 ± 0.11 mg/g quercetin equivalent of flavonoids. Antioxidant activity was determined by DPPH method and the positive result suggests that the methanolic extract of the mushroom was a free radical scavenger. 100 μg/ml of mushroom extract and ascorbic acid exhibited 76.4% and 99.3% inhibition respectively. The IC50 values were found to be 64.72 and 29.42 μg/ml for mushroom and ascorbic acid, respectively.