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roadside in steeply sloping volcanic rhyolite tuff rubble at mid canyon. Sites along the old gravel switchback road have now been largely destroyed by a new paved highway to Batopilas that also greatly restricts access to many former rich roadside collecting sites in the canyon.
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on volcanic rhyolite tuff roadcut just below upper canyon rim. This site has been destroyed by a new paved highway to Batopilas that also limits easy access to many former rich roadside collecting sites in the canyon
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although possibly cultivated, these plants may be naturally occurring as the species is found wild in the region.
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a notably glandular species on cliff face of road cut in volcanic rhyolitic tuff.
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although possibly cultivated, these plants may be naturally occurring as the species is found wild in the region.
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a notably glandular species on cliff face of road cut in volcanic rhyolitic tuff.
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although possibly cultivated, these plants may be naturally occurring as the species is found wild in the region.
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although possibly cultivated, these plants may be naturally occurring as the species is found wild in the region.
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on roadcut in volcanic rhyolite tuff at upper canyon rim. This site on the old gravel switchback road has now been destroyed by a new paved highway to Batopilas that also greatly limits access to many former rich roadside collecting sites in the canyon.
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