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Note woody basal stems. Plant on pale volcanic rhyolitic welded ash tuff rubble at base of steep canyon walls above river,
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Plant on pale volcanic rhyolitic welded ash tuff rubble at base of steep canyon walls above river,
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on roadside exposure of white hydrothermally altered volcanic tuff under Pinus chihuahuana & trieste and Quercus tarahumara & jonesii. just north of Barracnca Batopilas rim.
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on roadside exposure of white hydrothermally altered volcanic tuff under Pinus chihuahuana & trieste and Quercus tarahumara & jonesii, just north of Barracnca Batopilas rim.
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on roadside exposure of white hydrothermally altered volcanic tuff under Pinus chihuahuana & trieste and Quercus tarahumara & jonesii. just north of Barracnca Batopilas rim.
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on roadside exposure of white hydrothermally altered volcanic tuff under Pinus chihuahuana & trieste and Quercus tarahumara & jonesii, just north of Barracnca Batopilas rim.
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open grassy meadow among oaks and junipers on gently sloping terrace of volcanic soil and gravels in canyon bottom
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on roadside cut in pale volcanic rhyolitic tuff.
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Roadside, on open slope in volcanic gravels and coarse soils
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Roadside, on open slope in volcanic gravels and coarse soils. NOTE villous pubescence on stems & leaves, dotted glands on underside of leaflets
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