Notes For Reference:-

Carex otaruensis / Otarusuge オタルスゲ

Carex otaruensis, a perennial occurring on pond sides or wetlands in mountainous regions, grows to 30-60cm in height in the crowd. Sheaths at the bases of the plants tinge red and glossy with a threadlike net. Leaves are 3-5mm in width. Spikelets on the upper portions are male, slender, 4-6cm long, and those on the lower parts are female, thin, 3-6cm long, 3mm wide. Some of these on the lower parts have long pedicels and droop. Bloom time: May-June.