Evolvulus alsinoides var. acapulcensis (Willd. ex Schult.) Ooststr.

POWO follows these authorities in synonymising this name:

• Austin, D.F. (1990). Comments on southwestern United States Evolvulus and Ipomoea (Convolvulaceae). Madrono 37: 124-132. [Cited as Evolvulus alsinoides var. angustifolia.]
• Kartesz, J.T. in Kartesz, J.T. (1994). Convolvulaceae. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland: 217-221. Timber Press. [Cited as Evolvulus alsinoides var angustifolius.]
• Shinners, L. in Correll, D.S. & M.C Johnston (1970). Convolvulaceae. Manual of the vascular plants of Texas: 1241-1261. Texas Research Foundation. [Cited as Evolvulus alsinoides var. angustifolius.]

This name was accepted following an alternative taxonomy by these authorities:

• Van Ooststroom, S.J. (1934). A monograph of the genus Evolvulus. Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht 14: 1-267. [Cited as Evolvulus alsinoides var. acapulcensis.]
• Wiggins, I.L. in Wiggins, I.L. (1980). Convolvulaceae. Flora of Baja California: 373-385. Stanford Univ. Press. [Cited as Evolvulus alsinoides var. acapulcensis.]