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sessile male cones in flower. Plant on road right of way crossing basin fill flats of limestone gravels and calcareous soil
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shrub in silty volcanic sands and gravels on a raised bar of a wide braided wash
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shrub on low hillside slope in coarse gravels of silty limestone
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shrub on low hillside slope in coarse gravels of silty limestone
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Carson Quadrangle, Nevada. 1 mi. east of Nictharnahan Bridge. Purshia tridentata-Ephedra viridis sand dune formation., Elevation 4800 Quad name: Carson. Quad number: N-61.
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on coarse gravelly calcareous silts of alluvial bluff above Rio Grande River with Yucca constricta, Heliotropium confertifolium, Karwinskia humboldtiana, Leucophyllum frutescens, Aloysia macrostachya, Vachellia rigidula, Forestieria angustifolia, Schaefferia cuneifolia, Jatropha dioica, Sida tragiaefolia, Lippia graveolens, Guaiacum angustifolium, Calliandra conferta, Krameria ramosissima.
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Looking north from point near Panorama point in Panorama Hills. Shows herb-shrub type charcterized by Ephedra californica., T 31 S R 21 E Sec 34 Quad name: McKittrick. Quad number: 134. Reference to map: 6.
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on coarse gravelly calcareous silts of alluvial bluff above Rio Grande River with Yucca constricta, Heliotropium confertifolium, Karwinskia humboldtiana, Leucophyllum frutescens, Aloysia macrostachya, Vachellia rigidula, Forestieria angustifolia, Schaefferia cuneifolia, Jatropha dioica, Sida tragiaefolia, Lippia graveolens, Guaiacum angustifolium, Calliandra conferta, Krameria ramosissima.
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From point at east end of Panorama Hill looking north. Shows best shrub formation characterized by Ephedra californica. Assoc species: Gutierrezia sarothrae, Stephanomeria lactucina, Eriogonum fasciculatum var. polifolium (=Eriogonum fasciculatum polifolium)., T 32 S R 21 E Sec 1 Quad name: McKittrick. Quad number: 134. Reference to map: 4.
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on coarse gravelly calcareous silts of alluvial bluff above Rio Grande River with Yucca constricta, Heliotropium confertifolium, Karwinskia humboldtiana, Leucophyllum frutescens, Aloysia macrostachya, Vachellia rigidula, Forestieria angustifolia, Schaefferia cuneifolia, Jatropha dioica, Sida tragiaefolia, Lippia graveolens, Guaiacum angustifolium, Calliandra conferta, Krameria ramosissima.
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