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low trailing plant on novaculite hillside
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White flowering form. Plants in pine shaded, fallow/overgrown pasture on low hillside in tuffaceous rhyolite gravels.
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Plant on open grassy rhyolite hillside in igneous gravels. B. Turner (2011) proposed elevation of this variety to species rank as D. rubescens.
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gypsophilic forbs on narrow alluvial fan of calcareous gypsum gravels and soil at base of a low hill rising above a large gypseous bolson playa.
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uncommon perennial on exposed cliff faces in a 1/2 mile long, narrow, steep walled, dry, slot canyon cut in flat lying pale, blocky, limestone strata by a intermittent arroyo tributary of Fresnal Creek, and sheltering a richly diverse flora of the remote, poorly accessible region known as Hell's Half-acre.
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on steep roadcut outcrop of volcanic rhyolitic tuff. 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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Plants on open degraded grassland with basaltic volcanic substrate. Flowers blue-purple, stems & foliage conspicuously dotted with dark reddish glands, herbage strongly scented.
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erect perennial in roadside drainage swale crossing degraded grassland on generally flat plain of limestone gravels and calcareous soil.
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Small shrubs on white blocky white limestone ledge above shallow braided arroyo coursing across gently sloping out-wash plain.
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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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drainage between rocky igneous hillsides with Desmanthus covillei, Cylindropuntia arbuscula, Cardiospermum halicacabum, Solanum tridynamum
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open grassy roadside cut in volcanic rhyolite hillside
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plant on sandy calcareous soils of grassy highway right-of-way crossing flat plain of degraded grassland merging the Chihuahuan Desert into the southern Llano Estacado.
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Plants along grassy roadside drainage in gravels of volcanic rhyolite of grassy hillside with Bouteloua hirsute, Commelina colelestis
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plants on reddish quartz sands of low semi-stabilized dunes in the Mdanos de Samalayuca Natural Protected Area west of the active dunes field. Calyces villous in an otherwise glabrous population of var. terminalis. Possibly an unusual hairy specimen of terminalis or an intermediate between the two varieties but left as var. lanata here.
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plants on north facing roadside cut bank of coarse volcanic soil and gravels
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on mixed volcanic gravels of shallow arroyo drainage across creosote flats.
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on broad grassy roadside right-of-way in coarse gravelly calcareous/caliche soils of undulating plain.