Allium plummerae - one of my absolute favorites onions. It has a very limited range in Arizona and New Mexico, found at high elevation in marshes and alongside streams. Accordingly it prefers good garden soil and adequate irrigation. Upright tufts of strongly keeled (almost three-sided) grayish foliage, and showy flat clusters of wide-open upright stars. The flowers are pure white, with creamy yellow ovaries that age a tawny orangish color. Very reliable, non-invasive, clump-forming species, blooming in July-August. Photo by Mark McDonough.
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