Conioselinum (Umbelliferae-Apioideae) and related taxa of the Old World are critically revised. In total, 18 species are accepted in Conioselinum, three of which are distributed in North America, one in Europe and sixteen in Asia. Carpoanatomical examination showed that some species of Ligusticum described from China are closer to C. tataricum (the type of the name Conioselinum) and other known species of that genus than to L. scoticum (the type of the name Ligusticum); consequently seven new names in Consioselinum are validated: C. nematophyllum, C. pseudoangelica, C. sinchianum, C. sinomedicum, C. smithii, C. tenuisectum and C. tenuissimum. Three new species are described: C. nepalense from Nepal, C. reflexum from SW China and C. shanii from central China.
Willdenowia is an international peer-reviewed journal publishing original research papers in English from the entire fields of plant, algal and fungal systematics, covering the evolution, taxonomy and nomenclature of these organisms as well as related fields such as floristics and plant geography. Three issues appear each year (in April, August and December) in an open-access online edition and a print edition. Individual papers may be published in the online edition as fast-track articles ahead of inclusion in these issues.