Leucadendron comosumLeucadendron comosum, the ridge-cone conebush is a species of plant in the family Proteaceae. It was first described by Carl Peter Thunberg, and given the correct name by Robert Brown.SubspeciesThere are two subspecies recognized under L. comosum.Leucadendron comosum subsp. comosum Leucadendron comosum subsp. homaeophyllum