Huperzia mannii
 Huperzia mannii is a species of lycopod plant known by the common names Mann's clubmoss and wawae`iole. It is endemic to Hawaii where there are only six populations remaining. It is a federally listed endangered species of the United States.This plant is an epiphyte which grows upon other plants especially koa (Acacia koa) 'olapa (Cheirodendron trigynum) and kawa'u (Ilex anomala). It has a hanging branching reddish stem no more than 10 centimetres (3.9 in) long.