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34 52.595 N, 112 23.851 [W]; 4220ft, 1290m elevation. Along Verde River 0.5mi E of Campbells Ranch, ca. 4.3mi SE of Paulden. Growing on low floodplain and on banks of river in slightly damp, organic rich clayey loam and cobble with Bothriochloa laguroides, Salix gooddingii, Fraxinus velutina, Brickellia floribunda, Lactuca serriola, Ambrosia psilostachya, Xanthium strumarium, Grindeilia, Juncus mexicanus, Symphyotrichum divaricatum, Equisetum laevigatum, Mentha spicata, Polygonum monspeliense, Sphoenoplectus americanus, Berula erecta, Rumex crispus, Typha domingensis, Echinochloa crus-galli, Eragrostis cilianensis and Eragrostis diffusa.