Belongs to Williamsonia according to F. H. Knowlton 1919
Sister taxa: Williamsonia amarjolense, Williamsonia blanfordii, Williamsonia campanulatiformis, Williamsonia delawarensis, Williamsonia elocata, Williamsonia gallinacea, Williamsonia gigas, Williamsonia guptae, Williamsonia harrisiana, Williamsonia indica, Williamsonia kakadbhitensis, Williamsonia marylandica, Williamsonia microps, Williamsonia phoenicopsoides, Williamsonia recentior, Williamsonia riesii, Williamsonia sahnii, Williamsonia santalensis, Williamsonia seniana, Williamsonia sewardiana, Williamsonia smockii, Williamsonia sukhpurensis, Williamsonia texana, Williamsonia trambauensis, Williamsonia virginiensis
Distribution: there are no occurrences of Williamsonia oregonensis in the database
Specimen images are retrieved through the ePANDDA API.
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