Carex viridula Michx. ssp. viridula
Annotated by B.A. Bennett, June 2004. Remarks: B. Crins, February 2005; W.J. Cody

Yukon Territory: Aishihik Lake road ~km 100, west side . Elev. 3187'
61.55448239°, -137.2733767°
Covering the lakeshore of an alkaline flat exposed lakeshore growing with Juncus balticus and Carex garberi. Wet sand and gravel. Only site found. Abundant at this location. "Your plant looks a lot like C. viridula ssp. brachyrrhyncha var. saxilittoralis, superficially, However, the perigynia are too small/narrow and appear to have a very limited bending of the beak. Although a more variable character, the staminate spike still tends to be more elevated on a pedicel in saxilittoralis than in your plant, as well. C. viridula ssp. viridula is highly variable, and small, somewhat succulent plants like yours occur scattered throughout the range of the subspecies in stressed environments, both in North America and in Europe (I don't recall seeing any like this from Japan though). I believe your plant to be C. viridula ssp. viridula. Bill Crins, Ministry of Natural Resources, Feb. 7, 2005 by email. Rare. . 4 duplicates (DAO).

B.A. Bennett 04-0135, June 21, 2004
With P. Seccombe-Hett, A. Ceska, O. Ceska, L. Schroeder, T.T. McIntosh, R. Rosie
BABY, Accession: BABY-04312