Oxalis decaphylla

Tenleaf Woodsorrel - Oxalis decaphylla
Railroad Canyon, Black Range, July 23, 2017

On August 12, 2016, we were hiking along a ridge south of Iron Creek Campground in the Black Range when we came upon a group of Oxalis decaphylla, Tenleaf Woodsorrel.  It definitely breaks the mold of “three-leaf clover” foliage which I associate with the genus.  In the United States, it has a very limited range (New Mexico and Arizona.

Scientific synonyms for this species include Acetosella decaphylla (Karl Eduard Kuntze - 1891), Oxalis jaliscana (see specimen below), Oxalis grayi (Rose), and Ionoxalis decaphylla (Joseph Nelson Rose - 1906).  Other common English names for this species include Ten-leaved Pink-Sorrel and Gray’s Woodsorrel.  Its current description was made by Karl Sigismund Knuth in 1822.


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South of Iron Creek Campground Black Range, NM, USA
Immediately above and two below


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This specimen was collected on 12 July 1902 in the state of Jalisco near Guadalajara.




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