N. gracillima
Main page: Nepenthes Code Database
N. alba: endemic to Mt Tahan, lowers brown with dark brown spots, uppers white with red spots.
N. gracillima: endemic to Mt Tahan, single spur, elliptic lid, lowers green with brown spots, uppers black with green spots.
N. ramispina: branched spur, round lid, uppers and lowers blackish outside and green inside.