Holosteum umbellatum (Gintzburger et al., 2003)

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Acanthophyllum borszczowii
Gintzburger et al., Rangelands in Uzbekistan, 2003
Holosteum umbellatum (Gintzburger et al., 2003)
Aellenia subaphylla
Holosteum umbellatum
Holosteum umbellatum

Holosteum umbellatum L.

Local name:

  • Russian: Зонтичник обыкновенный, Костенец зонтичный - zontičnik obyknovennyj, kostenec zontičnyj

Chromosome number: n = 10 (Goldblatt and Johnson 1991); 2n = 20 (Rohweder 1939).

Description and morphology: Annual plant (height 6–25 cm), with a thin root. Stem: one or several erect, usually straight branched from base, glandular pubescent. Leaves: opposite linear-lanceolate to oblong. Flowers: bisexual; pentamerous in groups (3–10) hanging down on long pedicels (1–3 cm long), assembled in terminal umbellate cymes; sepals (3.5–4.0 mm) scarious-margined; petals (7–8 mm) white, oblong-elliptic; 3–5 stamens, rarely as many as 10; tri-stylus, free.

Reproduction: Flowering: March–May. Fruit: oblong-oviform, many-seeded capsule (5–9 mm long), opening by revolute 6-teeth. Seed: finely tuberculate with embryo surrounded by powerful perisperm. Dormancy B1 type. Lightsensitive. Fresh seeds do not readily germinate; 80% germinate after about 6 months of dry storage and cold stratification.

Pastoral importance: Good feed.

Habitat: Occurs on stony and sheltered slopes, foothills, and on the edges of cultivated fields.

Distribution: Central Asia, Caucasus, western and South-east Europe, Mediterranean region, South-west Asia, Iran, India and western China.