Scientific Name

Carex humbertiana Ohwi 큰뚝사초

Subgenus classification

: Carex.

Habitats

Occurs in Gangwon, and it lives in wetland.

Stem

Clumped growth, with basal sheath color dark brown to reddish brown, and length about 30-50 cm.

Leaves

Leaves similar to the stem, have glabrous surfaces, width about 3-4 mm.

Inflorescence

The number of spikes two or more. Spike shapes different (showing distinct sexual characteristics), with all spikes unisexual, spikes arranged loosely. Terminal spike sexuality staminate. Lateral spike sexuality pistillate or androgynous, and erect to ascend. Lateral spike length about 4 cm. Terminal spike length about 4-5 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 dark brown to blackish brown.

Perigynium

Transverse section lenticular to biconvex. Perigynium shape suborbicular (width/length > 0.5, nearly circular), and loosely flowered. Perigynium glabrous. Beak short (beak less than one-third of the total length), with truncate mouth. Length 3 mm.

Achene

Appendage absent, no constrictions.