Mexico, Maricopa County: Grown in cultivation at Desert Botanical Garden, Phoenix, N 33 deg 27' 33'', W 111 deg 56' 35'', 1200 ft., 366 m: accession number 1987 0850 1006; originally received as seed from Jardin Botanica, UNAM; originally collected by Hernandez s. n. in June 1985 from Mexico, Queretaro, San Juan Del Rio; originally received as Opuntia cantabrigiensis, name changed to Opuntia engelmannii by TDO on 2 June 2000.
20.390088 -99.987508 +-3000m.
Flower diameter 42-70 mm, length 47-64 mm, outer perianth yellow-green with darker green midstripe or bronze with greenish midstripe, inner perianth yellow, flowers collected in early afternoon, additional flowers collected 25 April 2006; pad color green, round; spines yellow or golden or brown; fruit dry, gray, diameter 16 mm. length 17 mm; seeds brown.