| Rumex aquaticus subsp. protractus (Rech. f.) Rech. f. | |
| Publ. & Syn. | Rech. f., Candollea 12: 56 (1949). - Rumex protractus Rech. f., Repert. Spec. Nov. Regni Veg. 33: 356 (1934). Described on numerous Siberian and Mongolian specimens. |
| Notes | Some plants from the interior Varanger Peninsula in arctic Norway differ disjunctly from the otherwise fairly frequent subsp. aquaticus in the region. We assign them with strong doubts to subsp. protractus. Morphologically, they rather conform to subsp. insularis as described but the distance to the reported range of that race is large and we have not had any Russian material of it available for inspection. If the Varanger Peninsula plants are identified as subsp. insularis, it strengthens the arguments for recognition of at least a subspecies. These plants are transitional to R. arcticus in several features, giving some support to Tolmachev's hypothesis above. Reports of R. arcticus from the Kola Peninsula may pertain to similar plants. |
| Chromosomes | (1) 120 (12x). - Europe (N), Russia (NW, NE). - Löve and Löve (1975c, Sweden for subsp. aquaticus, near Murmansk for subsp. protractus, Kolguev for subsp. insularis), see below. (2) 140 (14x). - Europe, Russia. - At least four reports. Löve (1986) 'corrected' the report of Löve and Löve (1975c) for subsp. aquaticus, subsp. insularis, and subsp. protractus from 2n = 140 to 2n = 120 after "re-staining and re-inspection of the slides". These corrected numbers are not in accordance with the number reported both previously and subsequently from this species, even if they are not improbable. Not included: Reports of 2n = >100 and ca. 128 from southern Siberia (Belaeva and Siplivinsky 1976, for R. protractus). Fedorov (1969) referred two reports of 2n = ca. 200. |
| Geography | European (E) - Asian: NOR RUS SIB RFE*. |
| Distribution | N = F D = S E = S YG = r FN = s UN = s YK = ? CW = * KP = s [ key ] |
| Parent taxon | Rumex aquaticus L. |
| PAF ID | 410705b |