Metrosideros rugosa

{{short description|Species of plant}}

{{Speciesbox

|image = Metrosideros rugosa (lehua papa) (5867889377).jpg

|image_caption = Lehua papa tree

|genus = Metrosideros

|species = rugosa

|authority = A.Gray

}}

Image:Metrosideros rugosa2.jpg

Metrosideros rugosa, commonly known as the lehua papa, is a tree of the myrtle family which is endemic to the island of O{{okina}}ahu in the Hawaiian Islands.{{Cite journal |last1=Aradhya |first1=K. M. |last2=Mueller-Dombois |first2=D. |last3=Ranker |first3=T. A. |date=October 1991 |title=Genetic evidence for recent and incipient speciation in the evolution of Hawaiian Metrosideros (Myrtaceae) |journal=Heredity |language=en |volume=67 |issue=2 |pages=129–138 |doi=10.1038/hdy.1991.72 |issn=1365-2540|doi-access=free |bibcode=1991Hered..67..129A }}{{Cite book |last=Rock |first=Joseph Francis |url=https://books.google.com/books?id=24FUAAAAMAAJ |title=The Indigenous Trees of the Hawaiian Islands |date=1913 |publisher=T. H. |pages=334–335 |language=en}}

It is closely related to the widespread and highly variable {{okina}}ōhi{{okina}}a lehua (Metrosideros polymorpha), found throughout the islands. Lehua papa, however, is restricted to a narrow habitat range at the summits of very wet, windswept ridges and cliffs in the Ko{{okina}}olau mountains.

It is distinguished from M. polymorpha by having the upper surface of the leaves with the veins deeply indented, and the leaf margins partly rolled (the latter is also found in some M. polymorpha varieties). It is also of rather distinctive appearance, with a compact shape suited to its windy habitats. Metrosideros rugosa has red flowers.