A List of the Vascular Plants of the District of Columbia ...
Percy Leroy Ricker
Prepared for the Use of the Botanical Society of Washington Percy Leroy Ricker. Arabie lyratfa L. 54 Arr.bis patena Sulliv. 56 "uro: rea btí. burea (l.) .i.lucí~. 52 3. vul^ris Г' . Br. barbarea pro eе ex (J. К. S.) P. Br. 53 Brassica arvensis (I.) З.Б.Г. 73 ...