Palhinhaea cernua
Introduction '''''Palhinhaea cernua''''', synonym '''''Lycopodiella cernua''''' and '''''Lycopodium cernuum''''', is a plant in the family Lycopodiaceae, commonly known as the '''staghorn clubmoss'''. The Hawaiian name for the plant is ''wāwaeʻiole'', or "rat's foot". It has a substantial number of scientific synonyms in several genera. The genus ''Palhinhaea'' is accepted in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but not in other classifications which submerge the genus in ''Lycopodiella''. It is the largest  of the clubmosses, having rhizomes up to  in length, with leafy uprights up to  in height.
Distribution ''Palhinhaea cernua'' is a widespread pan-tropical species, found mostly at higher elevations in subtropical mountain climates of tropical Africa, Asia, the Pacific Islands and the Neotropics. In Europe, it is found in the Azores (where it is possibly native) and formerly on Madeira. It has been introduced in continental Portugal (Valongo), Sicily and Malta.It favors bog environments. ''Palhinhaea cernua'' is sometimes cultivated.
References
Further reading * Cook Islands Biodiversity Database: http://cookislands.bishopmuseum.org/species.asp?id=6348* In efloras: http://www.efloras.org/florataxon.aspx?flora_id=12&taxon_id=242330770*