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504b. Carex duriuscula subsp. rigescens (Franchet) S. Yun Liang and Y. C. Tang, Acta Phytotax. Sin. 28: 155. 1990.

白颖薹草 bai ying tai cao

Carex stenophylla var. rigescens Franchet, Nouv. Arch. Mus. Hist. Nat., sér. 2, 7: 128. 1884; C. rigescens (Franchet) V. I. Kreczetowicz; C. stenophylla subsp. rigescens (Franchet) S. Yun Liang.

Leaf blades flat. Inflorescence white. Female glumes usually longer than or equaling utricles, broadly white hyaline on margins and at apex, apex subobtuse.

Slopes, semidry regions, meadows. Gansu, Hebei, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi [Russia (Far East)].


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