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34 51.836 N, 112 5.878 W; 3552ft, 1080m elevation. In floodplain of Verde River near the town of Sycamore, 0.5 mi SE of Government Cyn, ca. 2 mi upstream from confluence with Sycamore cyn. Growing on partially shaded floodplain in cobble, gravel and sand with Platanus wrightii, Salix goodingii, Chilopsis linearis, Populus fremontii, Parthenium incanum, Prosopis velutina, Cynodon dactylon, Plantago patagonica, Solanum elaeagnifolium, Baccharis sarothroides, Erigeron divergens, Erigeron concin, Bothriochloa barbinodis, Brickellia floribunda, Prosopis velutina, Sporobolus cryptandrus, Gilia sinuata, Layia glandulosa, Phlox gracilis, Linanthus bigelovii, Lepidium montanum, Verbascum thapsus, Astragalus lentiginosus, Astragalus tephrodes, Astragalus wootonii, Polygala alba, Layia glandulosa, Bromus rubens, Gutierrezia sarothrae, Erodium cicutarium, Maurandella antirrhiniflora, Sporobolus cryptandrus, Datura wrightii, Erysimum, Oenothera caespitosa, Cryptantha pterocarya, Gaillardia pinnatifida, Melampodium leucanthum, Phaseolus angustissimus, Hordeum, Chamaesarcha coronopus, Packera multilobata, Lotus humistratus, Plagiobothrys arizonicus, Pectrocarya setosa, Silene antirrhina, Lupinus brevicaulis, Lupinus coccinnus, Lotus humistrasus, Bromus tectorum, Mentzelia albicaulis, Phacelia bombycina, Lithospermum multiflorum, Cryptantha gracilis, Cryptantha barbigera, Astragalus nuttalianus, Amsonia palmeri, Penstemon eatonii.