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plants on an open exposed rockface of gypseous limestone of a foothill on the NW edge of the Sierra Parras, with Anulocaulis eriosolenus, Senegalia crassifolia, Opuntia rufida, Agave asperrima, Jatropha dioica, Selaginella lepidophylla, Sericodes greggii. Plants usually cleistogamous.
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on gypseous clay flats below low eroding slopes of interbedded Cretaceous shale and limestone. Foliage view.
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Side view of chasmogamous flower; 1 peso coin is 22 mm diam.
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Plant on low ridge of interbedded gypsum and limestone along eastside breaks of the Pecos River. Note: cleistogamous flower in lower left.
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Base of perianth developing into fruit
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Plant on low ridge of interbedded gypsum and limestone along eastside breaks of the Pecos River. Foliage view.
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Photo taken about 3/4 hour before sunset; flowers had opened a short time earlier, the stamens just now beginning to dehisce. Anthers and stigma tip are as far apart as they will be. Flowers will close in mid-morning. Fruits on plants in area all from chasmogamous flowers at this time of season.
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on silty calcareous soils of grassy roadside crossing long fallow agricultural fields on bolson plain.
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on silty calcareous soils of grassy roadside crossing long fallow agricultural fields on bolson plain.
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on silty calcareous soils of grassy roadside crossing long fallow agricultural fields on bolson plain.
