Proatriplex [SEP] parent taxon
Proatriplex
Proatriplex is a monotypic plant genus in the subfamily Chenopodioideae of the family Amaranthaceae, with the only species Proatriplex pleiantha (Syn. "Atriplex pleiantha"). It is known by the common names Four-corners orach and Mancos shadscale. It occurs in the Navajo Basin of Arizona, Colorado, New Mexico, and Utah.
Description.
"Proatriplex pleiantha" is an annual plant of 5–17 cm, glabrous, sometimes slightly farinose. The erect stems are branched from base with white-yellow or reddish
"Proatriplex" has been first described in 1950 by William Alfred Weber at the rank of a subgenus of "Atriplex" (in: "Madroño" 10(6): p. 188–189). In 1990, it was raised to genus level by Howard Coombs Stutz & Ge Lin Chu (in: "American Journal of Botany" 77(3), p. 364). The genus is monotypic, comprising only "Proatriplex pleiantha" (W.A. Weber) Stutz & G.L. Chu.. This species was later again included in genus