''Juglans microcarpa'', known also as the little walnut, Texas walnut, Texas black walnut or little black walnut (as it belongs to the "black walnuts" section ''Juglans'' sect. ''Rhysocaryon''), is a large shrub or small tree (10–30 ft tall) which grows wild along streams and ravines in

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, and

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, and the northernmost states of Mexico. It produces nuts with a width of 1/2—3/4 in. The pinnately compound leaves bear 7—25 untoothed to finely-toothed leaflets, each 1/4—1/2 in wide. It is found at elevations ranging from 700 ft to 6700 ft. Two varieties are recognized: ''J. microcarpa'' var. ''microcarpa'' and ''J. microcarpa'' var. ''stewartii''. Where the range of ''J. microcarpa'' overlaps with '' J. major'', the two species interbreed, producing populations with intermediate characteristics. This phenomenon has also been found where ''J. microcarpa'' trees grows near '' J. nigra'' trees. ''Juglans'' (literally "Jupiter's acorn") is the

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name of the walnut. ''Microcarpa'' means "having small fruit". Though very small, the seeds contained within the nuts are edible.

References and external links

{{Taxonbar, from=Q291675 Edible nuts and seeds microcarpa Trees of Northern America Flora of Northeastern Mexico Flora of the Sierra Madre Oriental