United States, Texas, Jim Wells, Both sides of perimeter road on E side of S arm of Naval Auxiliary Landing Field Orange Grove, just N of its culvert on El Caro Creek, ca. 2.4 airmiles E to ESE of jct. US Rt. 281 and Co. Rd. 220, at N27o52'53.8", W098o02'49.4". San Diego NE Quadrangle.
27.88161 -98.04706
Occasional in mixed vegetation on disturbed clayey soils on bulldozed roadside and slope of channelized drainage ditch on gently undulating landscape underlain by Lissie Formation. Associates include Acacia minuata, Aristida purpurea, Baccharis neglecta, Berberis trifoliolata, Celtis pallida, Chamaesyce velleriflora, Chloris ciliata, C. cucullata, Clematis drummondii, Condalia hookeri, Cynanchum barbigerum, Desmanthus virgatus, Dichanthium annulatum, Digitaria cognata, Diospyros texana, Dyssodia pentachaeta, Eupatorium incarnatum, Evolvulus alsinoides, E. sericeus, Florestina tripteris, Menodora heterophylla, Opuntia lindheimeri, Pennisetum ciliare, Phyllanthus polygonoides, Physalis cinerascens, Prosopis glandulosa, Rhynchosida physocalyx, Salvia coccinea, Sida abutifolia, Solanum elaeagnifolium, Xylothamia palmeri, Zanthoxylum fagara.