감둥사초

 

사진 참조할 사이트

http://www.plantphoto.cn/sp/37557

 

 

학명: Carex atrata L. subsp. atrata

분류: 사초과(Cyperaceae) Racemosae 절 (褐穗薹草组)

사진: 2018.07.07  백두산 서파

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

아래: 2018.07.06  백두산 북파

 

 

 

 

 

 

 

 

 

 

 

 

CAREX sect. RACEMOSAE G. Don in Loudon, Hort. Brit. 376. 1830.

褐穗薹草组 he sui tai cao zu

 

 

Carex atrata Linnaeus, Sp. Pl. 2: 976. 1753.

黑穗薹草 hei sui tai cao

 

Rhizome usually short. Culms densely tufted, 15-65 cm tall, trigonous, scabrous above, slightly inclined at apex, clothed at base with purple-red bladeless sheaths disintegrating into slightly reticulate fibers. Leaves shorter than culm, blades linear, 3-5 mm wide. Lower 1 or 2 involucral bracts leaflike, sheathless, upper ones setaceous or glumelike. Spikes 3-5, contiguous; terminal spike gynaecandrous, obovate or oblong; lateral spikes female, oblong, 10-15 × 5-6 mm, lower 2 with long peduncles, pendulous. Female glumes brown, dark brown, or purple-brown, ovate to narrowly ovate, 1-veined pale brownish costa forming a mucro at apex, apex acute to acuminate. Utricles brownish especially on upper part, nearly equaling or slightly shorter or longer than glume, elliptic or ovate, plano-convex, 3-3.5 mm, minutely papillose, without conspicuous veins except for 2 costas on edges, apex abruptly contracted into a conic short beak, orifice shallowly 2-toothed. Nutlets loosely enveloped, obovate, trigonous, 1.5-1.7 mm; style base not thickened; stigmas 3.

Alpine frozen soil, thickets, alpine meadows. Jilin, Qinghai, Sichuan, Taiwan, Xinjiang, SE Xizang, NW Yunnan [Bhutan, India, Japan, Korea, Mongolia, Nepal, Russia; C Asia, Europe].

 

아종 검색표

 

1. Rhizome long, creeping

................................... subsp. longistolonifera

1. Rhizome short

 

2. Utricles 4-4.5 mm.

................................... subsp. aterrima

2. Utricles 3-3.8(-4) mm

 

3. Female glumes ovate, apex acute;

utricles sessile, apex abruptly contracted into a conic short beak.

...................................... subsp. atrata

3. Female glumes lanceolate, apex long acuminate;

utricles shortly stipitate, apex abruptly contracted into a very short beak

or beakless, orifice emarginate.

.......................................... subsp. pullata

 

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242357060

 

 

Carex atrata subsp. atrata

黑穗薹草(原亚种) hei sui tai cao (yuan ya zhong)

(학명 이명)

Carex apodostachya Ohwi; C. atrata subsp. apodostachya (Ohwi) T. Koyama; C. atrata var. japonalpina T. Koyama; C. japonalpina (T. Koyama) T. Koyama; C. paishanensis Nakai.

(설명)

Female glumes ovate, apex acute. Utricles sessile, apex abruptly contracted into a conic short beak.

Alpine frozen soil, thickets. Jilin, Taiwan [Bhutan, India, Japan, Korea, Russia; Europe].

 

http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=250095761

 

 

    

FOC 에서 퍼온 세밀화

 

 

 

 

 

 

 

http://www.efloras.org/object_page.aspx?object_id=122800&flora_id=2

 

http://www.efloras.org/object_page.aspx?object_id=122799&flora_id=2