| Carex livida (Wahlenb.) Willd. | |
| Publ. & Syn. | Carex grayana Dewey, Amer. J. Sci. Arts 25: 141, t. 5, f. 59 (1834). Type: U.S.A.: New York, near Utica, 1832, leg. A. Gray. - Carex livida var. grayana (Dewey) Fernald, Rhodora 28: 8 (1926). |
| Notes | The North American var. grayana represents only minor variation in size characters within Carex livida and occurs here and there without a consistent range. The chromosome number(s) of this species are uncertain. Löve and Löve (1975a) omitted the reports of 2n = 32 from northern Europe (Löve and Löve 1944b, 1956b) but subsequently published that number from Manitoba (Löve and Löve 1981d). Taylor and Mulligan (1968) corrected a report of 2n = 32 from Ontario (Moore and Calder 1964) to 2n = ca. 54. The matter obviously needs re-investigation but there are a few indications. Hybrids between C. livida and C. vaginata (2n = 32) are very frequent in Scandinavia and possibly pollen-fertile (Wischmann and Elven 2008). The reports of the higher numbers of 2n = 50, 52, and 54 should be checked against vouchers. Rothrock and Reznicek (2002b) reported 2n = 32 as the only number for C. livida. |
| Chromosomes | (1) 32. - Europe (N), Canada. - Three reports. (2) 50 52 54. - Europe (N), Canada. - Three reports. See notes. |
| Geography | European (N) - Asian (NW) & Asian Pacific & North American: ICE RUS ALA CAN. |
| Distribution | N = F AN = r Ic = r E = R CC = r HL = r FN = r [ key ] |
| Parent taxon | Carex L. |
| PAF ID | 3309015 |