柄状薹草(原变种) bing zhuang tai cao (yuan bian zhong)

Carex aneurocarpa V. I. Kreczetowicz; C. ayouensis X. Y. Mao & Y. C. Yang; C. hankaensis Kitagawa; C. kirilowii Turczaninow; C. macroura Meinshausen; C. pediformis var. floribunda Korshinsky; C. pediformis var. macroura (Meinshausen) Kükenthal; C. rhizina Blytt ex Lindblom; C. rhizodes Blytt ex Boott var. abbreviata Meinshausen; C. supermascula V. I. Kreczetowicz; C. sutchanensis Komarov.

Utricles usually nerveless or indistinctly shortly veined abaxially, 2-veined laterally and thinly several veined or shortly veined adaxially, rarely nerveless on both surfaces.

Grasslands, mountain slopes, lax forests; 500-2000 m. Gansu, Hebei, Heilongjiang, Jilin, Nei Mongol, Shaanxi, Shanxi, Xinjiang [Mongolia, Russia (Far East, Siberia)].

The plants are used for making mats and are good for use as forage.

We have examined a large number of specimens in China and find that, although the spikes, glumes, and utricles of this species have many variable characters, these characters form a continuum and are very difficult to correlate with separate species. Therefore, we agree with Y. L. Chang and Y. L. Yang (Fl. Pl. Herb. Chin. Bor.-Orient. 11: 116. 1976) in combining Carex hankaensis, C. macroura, and C. supermascula with C. pediformis.