Japan Flora: Annual; stems 10-30 cm. long, often branched, purplish, recnrved-puberulent; leaves broadly linear to lanceolate, 1.5-3 cm. long, 2-6 mm. wide, subobtuse, acuminate at base, obscurely short-toothed, puberulent on both sides, the petioles 5-10 mm. long; spikes 1-3 cm. long, densely flowered, the bracts broadly ovate, 5-7 mm. long, cuspidate, appressed to and as long as or slightly shorter than the calyx, much longer than the pedicels; flowers about 4 mm. long; calyx about 3 mm. long at anthesis, 7-8 mm. in fruit, puberulent; nutlets orbicular, about 1.5 nun. across, slightly flattened, with obscure pits. Sept-Oct.