Carex daxinensis, Y. Y. Zhou & X. F. Jin, 2014

Zhou, Ying-Ying & Jin, Xiao-Feng, 2014, Notes on Carex (Cyperaceae) from China: three new species, Phytotaxa 164 (2), pp. 133-140 : 137

Key to Carex daxinensis and the related species of sect. Radicales in China

1. Leaves subleathery, stiff; culms stiff...................................................................................................................................... 2

- Leaves herbaceous, soft; culms thin....................................................................................................................................... 5

2. Spikes ovoid; perigynia 6–6.5 mm long ........................................................................................................... C. pterocaulos

- Spikes cylindrical; perigynia 4–5.5 mm in length .................................................................................................................3

3. Leaves ca. 1 mm wide; achenes granular-punctate on surfaces ........................................................................ C. anningensis

- Leaves 2–4 mm wide; achenes smooth on surfaces............................................................................................................... 4

4. Perigynia ellipsoid-ovoid, 4–4.5 mm long; spikes with a staminate part shorter than pistillate one.................. C. daxinensis

- Perigynia ovoid, 5–5.5 mm long; spikes with a staminate part slightly shorter or equaling pistillate one ..... C. caudispicata

5. Perigynia obovoid, glabrous; styles thickened and conic at base; leaves 2–4 mm wide ......................... C. funhuangshanica

- Perigynia oblong, pubescent; styles slightly thickened at base; leaves 4–10 mm wide ........................................ C. speciosa