''Eysenhardtia polystachya'', the kidneywood, is a
tree
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...
from Mexico, growing along forest edges and water courses at elevations of 150–3000 m.
Previously it was used as a source of
lignum nephriticum
''Lignum nephriticum'' (Latin for "kidney wood") is a traditional diuretic that was derived from the wood of two tree species, the narra (''Pterocarpus indicus'') and the Mexican kidneywood (''Eysenhardtia polystachya''). The wood is capable of tu ...
.
References
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polystachya
''Polystachya'', abbreviated Pol in horticultural trade, and commonly known as yellowspike orchid, is a flowering plant genus in the orchid family (biology), family (Orchidaceae). This rather distinctive genus was described by William Jackson Hoo ...
Flora of Mexico
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