Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
1 Leaves 1.5-35 mm long, 1-6 mm wide, oblanceolate, spatulate, or linear; fruits spherical (as thick as long), 4-11 mm in diameter. | |
2 Corolla 4-8 mm long, funnelform, the lobes 0.15-0.35× as long as the tube, usually reflexed; [mostly dry, calcareous, gyp, or saline habitats; c. and s. TX and westwards and southwards] | |
3 Corolla tube narrowed at base for 2.5-3 mm; corolla lobes 0.5-1× as long as the corolla tube; leaves gray-green, widest near the middle | |
3 Corolla tube narrowed at base for ca. 1.5 mm; corolla lobes 1-1.5× as long as the corolla tube; leaves bright green, widest below the middle |