| Hieracium L. | |
| Publ. & Syn. | Section Sylvatica. |
| Notes | The predominantly European and western Siberian genus Hieracium (s. str.) is very large in number of named species, about 9000 in total and about 2000 in northwestern Europe alone. A fair number of these reach the Arctic in Iceland, Norway, and European Russia, some in Siberia and Greenland, and a very few in northeastern North America. The vast majority of named species are agamospermous microspecies. The single known sexual exception in the north is H. umbellatum which barely reaches the Arctic. Following our PAF discussions concerning apomictic groups with very numerous named microspecies, these are generally attempted listed under some kind of aggregates. In Hieracium, two alternative systems have been in use in Europe and Russia the last 50 years. The majority of previous researchers and some recent ones have applied sections or a system of sections, subsections etc. (e.g., Omang and Dahlstedt in Fennoscandia, Iceland, and Greenland; Williams, Kent, and Stace in the British Isles; Sennikov in Russia). The section system is more or less as indicated below, with tentative inclusions of species aggregates: |
| Chromosomes | (1) 30. - Europe (E), cultivated plants. - Pashuk (1987); Zhukova (1964). (2) 36 (4x). - Europe, Far East (N), Canada. - Several reports. |
| Geography | European: ICE* NOR*. |
| Parent taxon | Asteraceae |
| Child taxa |
The Hieracium alatum aggregate The Hieracium alpinum aggregate The Hieracium atratum aggregate The Hieracium bifidum aggregate The Hieracium caesium aggregate The Hieracium diaphanoides aggregate The Hieracium diaphanum aggregate The Hieracium dovrense aggregate The Hieracium epimedium aggregate The Hieracium fasciculare aggregate The Hieracium fuscocinereum aggregate The Hieracium inuloides aggregate The Hieracium juranum aggregate The Hieracium laevigatum aggregate The Hieracium murorum aggregate The Hieracium nigrescens aggregate The Hieracium plicatum aggregate The Hieracium prenanthoides aggregate The Hieracium rohacsense aggregate The Hieracium saxifragum aggregate The Hieracium schmidtii aggregate The Hieracium sommerfeltii aggregate The Hieracium subramosum aggregate The Hieracium truncatum aggregate The Hieracium umbellatum aggregate The Hieracium vulgatum aggregate |
| PAF ID | 8646 |