| Chrysosplenium tetrandrum (N. Lund ex Malmgren) Th. Fr. | |
| Publ. & Syn. | Th. Fr., Bot. Not. 1858: 193 (1859). - Chrysosplenium alternifolium var. tetrandrum N. Lund ex Malmgren, Bot. Not. 1846: 39 (1846). Described from Tana in Finnmark (Norway). - Chrysosplenium alternifolium subsp. tetrandrum (N. Lund ex Malmgren) A. Blytt & O.C. Dahl, Haandb. Norges Fl.: 411 (1906 [1904]). |
| Notes | The subspecific combination by Blytt and Dahl has priority. Jalas et al. (1999) stated that a combination by Cajander (1906: 325) from early in 1906 predates that of Blytt and Dahl from October 1906. However, the flora of Blytt and Dahl was printed and distributed in fascicles. Fascicle 26 (where Chrysosplenium appeared) was available to the public already in 1904. Both combinations much predate the more often cited combination of Hultén (1937: 217). The main diagnostic difference between C. tetrandrum and C. alternifolium is the fewer stamens, four ("tetrandrum") vs. eight, in addition to a different ploidy level (C. alternifolium is predominantly octoploid). Additionally there are some quantitative characters and the plants are almost never misidentified. |
| Chromosomes | 24 (4x). - Europe (N), Siberia (N), Far East (N), Alaska, Canada. - Numerous reports. |
| Geography | Circumpolar & Cordilleran: NOR RUS SIB RFE ALA CAN GRL. |
| Distribution | N = S AN = f B = S C = F D = F E = F CC = f WI = r YG = r HL = f FN = s EP = r CE = f CS = s UN = s YK = r AW = f GE = r SF = f CW = f Tm = r KP = s [ key ] |
| Parent taxon | Chrysosplenium L. |
| PAF ID | 500204 |