The genus Panus Fr. is placed within the residual polyporoid clade (Binder et al. 2013). The 231 taxa of Panus are listed in Index Fungorum (Accessed date: 15 August 2019) and 206 taxa are listed in MycoBank (MycoBank 2019; accessed date: 15 August 2019). Panus species are regarded as white rot fungi (Zhou et al. 2016), and are usually widely distributed in sub-tropical to tropical, temperate, and boreal regions in proximity to a wide range of broadleaf trees (Pegler 1975, 1983, Corner 1981, Vargas-Isla et al. 2015). Two Panus species in particular, P. conchatus and P. lecomtei, are distributed in tropical areas and irradiated in temperate regions (Zmitrovich et al. 2018).

They are commonly occurring in the tropics and less so in north temperate regions (singer 1986). Fries (1936-1838) describe Panus conchatus (Bull, Fr.) Fr., as the type species of this genus, it is an inedible species of mushroom that occurs throughout the Northern Hemisphere. The fungus grows on the decomposing wood of a wide variety of deciduous and coniferous trees.  The specific epithet conchatus is derived from the Latin meaning "shell-like". It is commonly known as the lilac oysterling. Panus conchatus mushrooms have an extremely variable morphology that changes with the age of the fruit bodies. According to him the basidiocarps are pleurotoid, tough, cartilaginous, and revive upon moistening. The stipe is central to lateral or sometimes almost absent. The pileus surface is tomentose, strigose, squamulose or smooth, and the gills are decurrent with an entire margin. Basidiocarps are usually not brightly colored except for those taxa which exhibit a lilac pigment. The context is white and composed of interwoven hyphae which become dimitic in age, exhibiting intercalary or terminal skeletal hyphae. The basidia are clavate and four sterigmata. The basidiospores are white, ellipsoid to cylindric, smooth, thin-walled, and inamyloid. Cystidia are present in some taxa. Corners (1981) include those taxa with a dimitic hyphal system, cylindric basidiospores, pleurocystidia in most taxa, and the absence of hyphal pegs and have an irregular lamellar trama in Panus. Despite being a gilled species, phylogenetic analysis has shown it is closely related to the pored species found in the Polyporaceae. By Using rDNA, Hibbett and Vilgalys (1991) supported the conclusion about the data of genus Panus by corner (1981) and singer (1986). Mushrooms in the genus Panus are regarded as free gilled and form a monopyletic clade with Lentinus and Polyporus (Hussein et al. 2014).

In Pakistan, previously four panus species have been reported viz: Panus Crinitus (L. ex FR.) Singer, P. Rudis Fr. and P. Tigrinus (Bull. ex Fr.) Singer. By (Ahmad 1980) and P. Stypticus (Bull. ex Fr.) Karst. was reported by Iqbal and Khalid (1996). During our studies on diversity of polyporoid fungi in KP Forests, an unreported Panus specie was found. The basidiomata were first identified using morphological characters, and sequence analyses of internal transcribed spacer (ITS) rDNA region supported the identification. A detailed description of the Pakistani Panus species is provided below.