Salix bonplandiana

Salix bonplandiana
Ahuejotes in Parque Tezozomoc
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Malpighiales
Family:	Salicaceae
Genus:	Salix
Species:	S. bonplandiana
Binomial name
Salix bonplandiana (H.B.K.)-Kunth
Natural range of Salix bonplandiana

Salix bonplandiana (Bonpland willow), (Span.: ahuejote, sauce, ahujote, and huejote), is a perennial species of willow tree native to southern and southwest Mexico and extending into central Guatemala; in western Mexico it is a tree of the Sierra Madre Occidental cordillera, but also occurring in other small locales, for example Baja California Sur, northern Sonora, San Luis Potosi, etc. A core disjunct area occurs in central and southeast Arizona, in advantageous locales, especially associated with higher elevations and water.

In Mexico, the Bonpland willow is associated with the Pacific Coast, and in southern Mexico, the range extends into internal mountain areas of Pacific, central-southwest Guatemala. Across southern Mexico, it is a species of the Trans-Mexican Volcanic Belt, and has its range extension on the Pacific, west from the west of the Volcanic Belt, and then north into the Sierra Madre Occidental cordillera. In the cordillera, the range ends in southwest Chihuahua, but is disjunct in a large area of central Arizona, the Mogollon Rim–White Mountains (Arizona) and extending into the Madrean Sky Islands southeastwards, including mountain-related isolated locales in the bootheel of extreme southwest New Mexico.

Both S. bonplandiana, and S. taxifolia have identical ranges; both species range from the Trans-Mexican Volcanic Belt southward, on an imaginary centerline into central Guatemala. Each is on the Pacific Coast, but leave the coastal strip before the range extension into central Guatemala. Both have their disjunct ranges in Arizona, both being in the Madrean Sky Islands region. Both also range into Baja California Sur, but S. taxifolia only at the extreme south. (S. bonplandiana also occurs in Arizona, in the Mogollon Rim–White Mountains regions.)

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Wikipedia