Klein, Ind. 1795; Polygonum glabrum Willd. (var.) alpha obscurum Meisn.; Disclaimer: The information presented is presently mostly based on herbarium sheet labels and annotations and not checked for correctness. The Botanic Garden and Botanical Museum Berlin-Dahlem does thus not take responsibility for the topicality, correctness, completeness or quality of the information provided. Liability claims regarding damage caused by the use of any Information provided, including any kind of information which is incomplete or incorrect, will therefore be rejected. We would like to encourage you to send corrections, if possible accompanied by the bar code number seen on the sheet, by email to HerbariumAnnotations@bgbm.org.; Herbarium Willdenow in Herbarium Berlin (B): The scientific names of the Willdenow Herbariums specimens in B are mainly left without author citation as these names are the historic ones used in the handwritten diagnosis by C.L. v. Willdenow on the species folder. D.FL. v. Schlechtendal, who sorted the Herbarium according to the Linnean system, brought it to the present state and annotated the mounted specimens with these names. His enumeration, based on these names, is used in the physical arrangement of the Willdenow Herbarium at B. Schlechtendals annotations of personal names in the lower right corner of the sheets represent the person from which Willdenow received the material, which is not necessarily the collector. Only some of the specimens are further annotated. Names of collectors, donators, determiners or exchanging herbarium keepers are cited in the annotations field. Type names are provided as far as possible. To search for material it is recommended to use the "Herbarium Willdenow. Alphabetical Index", ed. P. Hiepko, 1972.