| Diplazium sibiricum (Turcz. ex Kunze) Sa. Kurata | |
| Publ. & Syn. | ?Aspidium crenatum Sommerf., Kongl. Vetensk. Acad. Handl. 1834: 102 (1835), non Diplazium crenatum Poir. in Lam., Encycl. Suppl. 2: 488 (1812). Two syntypes (O): Norway: Oppland, Sel, "Kringelen", [1831], leg. S.C. Sommerfelt. Lectotype not designated. - ?Diplazium sommerfeltii ["sommerfeldtii"] Á. Löve & D. Löve, Taxon 26: 326 (1977). Nomen novum for Aspidium crenatum Sommerf. |
| Notes | Danilov (1988b) mapped Diplazium sibiricum from northwest of Dudinka in Taimyr, north of the arctic boundary. Löve et al. (1977) assigned the disjunct Nordic diploid population to D. sommerfeltii and reserved the name D. sibiricum for the Russian-Asian tetraploid. The ploidy level of the northern Russian and Siberian plants is not known; they may be diploid, too. The Nordic diploid does not reach the Arctic. No morphological comparison has been undertaken but the matter should be studied. |
| Chromosomes | (1) 82 (2x). - Europe (Norway). - Brøgger (1960, two counts). (2) 164 (4x). - Asia (Himalaya), Far East (Japan). - At least three reports. |
| Geography | European (NE) - Asian (N/C): SIB. |
| Distribution | N = S E = R Tm = r [ key ] |
| Parent taxon | Diplazium Sw. |
| PAF ID | 090301 |