Difference between revisions of "Centaurea squarrosa (Gintzburger et al., 2003)"

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'''Other''': ''Centaurea'' sp.
 
'''Other''': ''Centaurea'' sp.
* ''Centaurea cyanus'' L.
+
* ''[[Centaurea cyanus]]'' L.
  
  
 
[[Category:Gintzburger et al. (2003)]]
 
[[Category:Gintzburger et al. (2003)]]

Revision as of 16:42, 11 March 2016

Carthamus tinctorius
Gintzburger et al., Rangelands in Uzbekistan, 2003
Centaurea squarrosa (Gintzburger et al., 2003)
Cousinia dichotoma
Centaurea squarrosa
Centaurea squarrosa
Centaurea cyanus
Centaurea cyanus


Centaurea squarrosa Willd.

Local name:

  • Russian: Василек растопыренный, Тош какра
  • Uzbek: Tosh kakra
  • Turkmen: Yapur

Chromosome numbers: 2n = 36 (Chuksanova et al. 1968a).

Description and morphology: Biennial plant (height 20–70 cm), prostrate with numerous branches growing from base. Stem: singular, erect, from middle/rarely from bottom divaricated, deciduous branched and richly pubescent. Leaves: lower – (15–20 cm long) on long petioles, bipinnate; middle – (1.0–2.2 cm long, 0.4–4 mm wide), sessile pinnate; upper – (0.7–1.0 cm long, 1.5–2.0 mm wide), complete, oblong-linear, sessile. Lobes of leaves linear, slightly pointed from both sides, glandular. Capitulum (4.0–5.0 mm in diameter), numerous, terminal, oblong-oviform or almost cylindrical. Flowers: bisexual; pink or dark violet; corolla 5-lobed. White pappus (1.0–2.7 mm long).

Reproduction: Fruit: achene (3.5–4.2 mm long, 1.3–1.7 cm wide), ribbed with short rigid hairs, greenish-dark brown with yellow stripes on ridges. Dormancy B1 type. Dry storage of seed (3–12 months) and germination at 5–15 °C lift most of dormancy.

Fodder value: Low productivity. Poor value for most animals except camels (% DM): protein 5.9; fat 4.8; cellulose 43; nitrogen-free extract 32; ash 5.6.

Habitat: Occurs on foothills and steppes, on dry stony slopes and as a weed in cultivated fields.

Distribution: Central Asia (Pamir-Alai, Tien Shan, Turkmenistan, Caucasus) and East Asia.

Other: Centaurea sp.