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black sagebrush, Artemisia nova (gray form)

black sagebrush, Artemisia nova (gray form)

black sagebrush, Artemisia nova, Nevada, White Mountains, Sugarloaf, Sugarloaf Canyon, Pinchot Creek - Columbus Salt Marsh watershed, elevation 2617 m (8585 ft).

This is the gray form of black sagebrush, looking and behaving very much like low sagebrush (Artemisia arbuscula) on the landscape, but with the typical elongate heads, glabrate inner phyllaries, entire bracts, and elevated orangeish inflorescences of black sagebrush. In this area, it grew in pure stands on convex slopes, alternating in mosaic with taller stands of mountain sagebrush (Artemisia tridentata subsp. vaseyana) on concave slopes. Farther north in the Great Basin, low sagebrush is instead the usual mosaic component on convex slopes. True low sagebrush has yet to be found as far south as the White Mountains, with past reports based mostly on specimens of alpine sagebrush (Artemisia rothrockii) or black sagebrush.

Black sagebrush is widespread in a variety of habitats across most of the intermountain west of the United States, from higher desert valleys nearly up to subalpine elevations. It occurs on more arid sites, on average, than the other species mentioned here. At least here in the White Mountains, this gray form tends to occur on better-developed, less alkaline soils, while the green form tends to be found on calcareous rock outcrops and other harsher and/or more alkaline soils. The name black sagebrush refers to the appearance of the plants (the bark in particular) when wet after rain or fresh snowmelt.

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Photo taken @ O on 1 September 2017 (© Jim Morefield / Flickr)

Related tags :
 esmeralda county, nevada, united states, asteraceae, sunflower family, artemisia, artemisia nova, angiosperm, dicot, plant, flowers, flower, blossom, bloom, wfgna, flora, wildflower, wildflowers, black sagebrush, sagebrush
 

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