Carex ×flavicans (F. Nylander) F .Nylander
Annotated by A.A. Reznicek, May 2007. Remarks: J. Cayouette, May 2007

Yukon Territory: Peel/Blow River Delta, Fish River. Elev. 2 m
68.8614°, -136.81165°
Patchy in low lying area surrounded by tundra. Was C. subspathacea by B.A. Bennett, revised by A.A. Reznicek May 2007 - this is not like anything I have ever seen in the north - they are somewhat broader leaved, with scales often having a mid-rib not even reach the apex, and otherwise not right (leaves too scabrous, and with clear midrib, perigynia and scales not coriaceous enough) but they are not C.ramenski, again becuse of the lack of any hint of an awn, and perigynia and scales not particularly coriaceous. What are these? One good possibility in Carex aquatilis X C. subspathacea (C.xflavicans). This is a rare hybrid in the east, and I have not seen it in any of my Alaskan material - but it would fit. I wondered if it could be simply small C. aquatilis, but they appeared to be too delicate, with rather rounded culms and longish scales. Hybrids involving C.ramenskii have been reported from Alaska, but I would suspect these to have broader leaves and a coarser habit. J.Cayouette - I was able to find some pollen grains on the staminate scales (DAO 823544) = Carex ×flavicans (Nylander) Nylander. Pollen stainability = 0%, based on only 25 grains collected on staminate scales, may be too old for good results. Looks like a small C. aquatilis with narrow spikes and leaves. From C. subspathacea, it shares the involucral bracts partly clasping; yellowish-green and narrower foliage; pistillate scales long and wide, with sometimes larger central band; perigynia with somewhat enlarged beak at base; from C. aquatilis it shares the general habit, narrow and elongate spikes, the wide basis of the flowering stem (leaf sheaths); general shape of perigynia. Uncommon. 3 duplicates (MICH; DAO; CAN).

B.A. Bennett 06-0341, July 31, 2006
With M.J. Oldham, C.E. Kennedy, P. Seccombe-Hett, D.C. Gordon
BABY, Accession: BABY-05914, Genetic barcoding: CCDB-23321-B3