United States, Arizona, Pima County, Appleton-Whittell Research Ranch
31.590611 -110.506917 +-10m. WGS84
Day flowering; Herbage: Glabrous; Calyx: Seeds:(Light brown-)Brownish olive-Black, subtly mottled black on darker varieties, more prominent on browner ones; lanceolate with hilum as the base, strongly keeled twice along back, front face strongly angled; hilum distinct in constrast, often white and small.