| Caltha palustris var. sibirica Regel | |
| Publ. & Syn. | Regel, Bull. Soc. Imp. Naturalistes Moscou 34, 2: 53 (1861). Described from Siberia (in general terms). - Caltha sibirica (Regel) Tolm., Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk SSSR 17: 153 (1955). - Caltha arctica subsp. sibirica (Regel) Tolm., Fl. Arct. URSS 6: 129 (1971). |
| Notes | The very few and scattered localities mapped by Tolmachev (1971b) do not inspire confidence in var. sibirica as a consistent taxon in an arctic context. Its range is largely encompassed by that of subsp. radicans. Friesen (1993) synonymized var. sibirica with subsp. arctica (= subsp. radicans). Entered provisionally. |
| Chromosomes | (1) 28 (4x, x = 7). - Europe (N), Far East (N). - At least three reports for "palustris" and "sibirica". Reports of this number were 'corrected' by Löve and Löve (1975a) to 2n = 32. (2) 32 (4x, x = 8). - Europe, Russia, Siberia, Far East, Alaska, Canada. - Numerous reports for "arctica", "palustris", and "sibirica". (3) 48 (6x, x = 8). - Europe (N). - Löve and Löve (1948, for C. radicans). (4) 52 54 56 (8x, x = 7). - Europe, Russia, Siberia, Far East, Alaska, Canada. - Numerous reports for "arctica", "palustris", "radicans", and "sibirica". (5) 60. - Siberia, Canada. - Several reports for "arctica" and "palustris". (6) 64 (8x, x = 8). - Siberia, Far East. - At least two reports for "palustris" and "sibirica". (7) 70 72 80 (9-10x, x = 7, 8). - Siberia, Far East (N), Alaska. - At least four reports for "minor", "palustris", and "sibirica". There are several reports of a wide range of numbers within restricted areas, e.g.: Löve and Löve (1956b, 2n = 48-80 for C. minor in Iceland); Johnson and Packer (1968, 2n = 56-70 for C. palustris s. lat. in northwestern Alaska); Chrtková and Jarolímová (1999, 2n = 32 34 34-36 44 47 56 56+6B 57 56-59 59 61 64 for C. palustris in Europe). |
| Geography | Asian (N/C): SIB RFE. |
| Distribution | N = R E = R CE = r CS = r YK = r [ key ] |
| Parent taxon | Caltha palustris L. |
| PAF ID | 360101c |