Ipomoea arborescens Mexico, Sonora: - Vicinity of Alamos, Dec. 1990, Richard Felger. - Near Huasabas (freeze-damaged trees, no leaves), 19 Jun 2011 and 20 km SSE of Moctezuma (leaves), Tom Van Devender. U.S.A., Arizona Desert Museum, Dan Austin (1). U.S.A., Fairchild Tropical Garden, May 1999, Dan Austin (2).
