| Cerastium nigrescens var. laxum (Lindblad) Brysting & Elven | |
| Publ. & Syn. | Cerastium arcticum auct., non Lange (1880). |
| Notes | Elven and Brysting: Cerastium nigrescens does not reach the Arctic in Scandinavia but reaches it in Iceland. Some plants from southwestern Greenland may belong to this race. The plants that reach the Arctic belong to the widespread var. laxum. The type of the species belongs to a very local Shetland serpentine plant, an ecotype accorded rank as var. nigrescens. |
| Chromosomes | 108 (6x). - Europe (N). - Several reports, see Brysting (2000) with references to previous reliable counts. Not included: A report of 2n = 90 (ca. 5x) from central Norway (Knaben and Engelskjøn 1967) probably belongs to the hybrid C. alpinum x nigrescens which is frequent in the mountains (Oppdal) from where the counted plants came. |
| Geography | European (NW) (or amphi-Atlantic (E)?): ICE GRL? |
| Distribution | N = F GW = ? Ic = f E = S [ key ] |
| Parent taxon | Cerastium nigrescens (H.C. Watson) Edmondston ex H.C. Watson |
| PAF ID | 420206a |