Klagûl

The buds of the klagullu, a tall shrub  related  to  hazelnut  and  shanku  (see alshana),  native   to  semiarid   to  temperate  scrublands  and shortgrass prairies. Both its late winter buds (called klagul), which must be brewed  into a  tea, and  its edible  autumn  nuts(called marku)  contain  an  enchantment  which  gives  the  user Infravision.