Scientific Name

Carex tristachya Thunb. 반들사초

Subgenus classification

: Carex.

Habitats

Occurs in Jeonbuk or Jeonnam.

Stem

Clumped growth, with basal sheath color dark brown to reddish brown, and length about 20-45 cm.

Leaves

Leaves longer than the stem or similar to the stem, have glabrous surfaces, width about 2-5 mm.

Inflorescence

The number of spikes two or more. Spike shapes different (showing distinct sexual characteristics), with all spikes unisexual, spikes arranged densely. Terminal spike sexuality staminate. Lateral spike sexuality pistillate, and erect to ascend. Lateral spike length about 1-3.5 cm. Terminal spike length about 1-4 cm. Number of spikes per node one (one spike in one bract).

Bract

Lowermost bract shape leaf-like.

Glume

Staminate glume awn absent. Pistillate glume awn absent. Pistillate glume color whitish green to light brown.

Perigynium

Transverse section trigonous to terete. Perigynium shape elliptical to narrow elliptical (the broadest part in the center), and densely flowered. Perigynium hairy or pubescent. Beak short (beak less than one-third of the total length), with bidentate to bifid mouth. Length 3-3.2 mm.

Achene

Appendage present, with constrictions (?) or no constrictions (?).