Click on images to enlarge
Specimen
Specimen
Carex peiktusanii Kom. 백두사초
Carex peiktusanii Kom. 백두사초
Carex peiktusanii Kom. 백두사초
Carex peiktusanii Kom. 백두사초
Carex peiktusanii Kom. 백두사초
Scientific Name
Carex peiktusanii Kom. 백두사초
Subgenus classification
: Carex.
Habitats
Occurs in Gangwon, Gyeongbuk, Gyeongnam, Jeonbuk or Jeonnam, and it lives in high altitude (approximately 1000m or higher).
Stem
Clumped growth, with basal sheath color dark brown to reddish brown, and length about 30-60 cm.
Leaves
Leaves longer than the stem, have glabrous surfaces, width about 2-4.5 mm.
Inflorescence
The number of spikes two or more. Spike shapes all same (no distinct differentiation between sexual characteristics) or different (showing distinct sexual characteristics), with some spikes bisexual, spikes arranged loosely. Terminal spike sexuality gynecandrous. Lateral spike sexuality pistillate, and drooping. Lateral spike length about 1.8-2.5 cm. Terminal spike length about 2-2.5 cm. Number of spikes per node one (one spike in one bract).
Bract
Lowermost bract shape leaf-like.
Glume
Staminate glume awn absent or short (awn less than one-third of the total length). Pistillate glume awn absent or short (awn less than one-third of the total length). 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 glabrous. Beak short (beak less than one-third of the total length), with bidentate to bifid mouth. Length 3.5-4 mm.
Achene
Appendage absent, no constrictions.
Copyright © 2024. All rights reserved.