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perennial on cut bank of coarse re-cemented weathered gypsum/silty limestone gravels along drainage at base of hillside slope of inter-bedded anhydrite & silty limestone (Castile Formation).
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Perianth tube elongates after perianth collapses
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perennial on cut bank of coarse re-cemented weathered gypsum/silty limestone gravels along drainage at base of hillside slope of inter-bedded anhydrite & silty limestone (Castile Formation).
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perennial on cut bank of coarse re-cemented weathered gypsum/silty limestone gravels along drainage at base of hillside slope of inter-bedded anhydrite & silty limestone (Castile Formation).
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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perennial on cut bank of coarse re-cemented weathered gypsum/silty limestone gravels along drainage at base of hillside slope of inter-bedded anhydrite & silty limestone (Castile Formation). Note the thick, leathery, glaucous/glaberous, semi-succulent leaves.
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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perennial on cut bank of coarse re-cemented weathered gypsum/silty limestone gravels along drainage at base of hillside slope of inter-bedded anhydrite & silty limestone (Castile Formation). Note the reddish rhubarb-like stems of the glabrous blue-green leaves emerging from a thick, woody caudex.
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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perennial on coarse mixed road base gravels over gypseous clay soil along roadside drainage at base of hillside slope of inter-bedded anhydrite & silty limestone of the Castile Formation). Note the long, diffuse branching of erect inflorescence stems to 1 meter tall
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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perennial on the common grayish crust of weathered gypsum forming gently sloping plain away from base of small knoll of inter-bedded anhydrite & silty limestone of the Castile Formation).
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.
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perennial on crust of weathered gypsum over anhydrite gypsum and calcareous shaley limestone of the Permian Castile Formation, with other gypsophilic plants Nama carnosum, Tiquilia hispidissima, Dicranocarpus parviflorus, Bouteloua breviseta
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plants in calcareous gravels of a drainage swale between abandoned strip of pavement and base of gypseous limestone hillside at NW margin of the Sierra Parras with Peganum mexicana, Ditaxis neomexicana,Abutilon coahuilae, Senna pilosior.