Angiospermae - Rosales - Ulmaceae

Full reference: F. H. Knowlton. 1926. Flora of the Latah formation of Spokane, Washington, and Coeur d'Alene, Idaho. US Geological Survey Professional Paper 140(A):17-55

Belongs to Ulmus according to F. H. Knowlton 1926

Sister taxa: Ulmus affinis, Ulmus alata, Ulmus americana, Ulmus antecedens, Ulmus basicordata, Ulmus betuloides, Ulmus braunii, Ulmus brownellii, Ulmus californica, Ulmus campestris, Ulmus chuchuanus, Ulmus columbiana, Ulmus columbianus, Ulmus dubia, Ulmus grandifolia, Ulmus hilliae, Ulmus macrocarpa, Ulmus maguanensis, Ulmus minima, Ulmus newberryi, Ulmus okanaganensis, Ulmus orbicularis, Ulmus parvifolia, Ulmus planeroides, Ulmus plurinervia, Ulmus praecursor, Ulmus prelanceaefolia, Ulmus protoamericana, Ulmus protoracemosa, Ulmus pseudoracemosa, Ulmus pumila, Ulmus quercifolia, Ulmus racemosa, Ulmus rhamnifolia, Ulmus sorbifolia, Ulmus speciosa, Ulmus tenuinervis, Ulmus wallichiana, Ulmus wardii

Type specimen: Its type locality is Cut No1, Spokane, Portland & Seattle Railway, which is in a Miocene fluvial shale in the Latah Formation of Washington.

Ecology: "photoautotroph"

Distribution: found only at Cut No. 1, Spokane, Portland & Seattle Railway

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Specimen images are retrieved through the ePANDDA API.