Centaurea idaea
| Centaurea idaea | ||||||||||||
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| Centaurea idaea | ||||||||||||
| Boiss. & Hero. |
Centaurea idaea is a plant from the genus of knapweed ( Centaurea ) in the family of Compositae (Asteraceae).
features
Centaurea idaea is a perennial stem hemicryptophyte that reaches heights of 5 to 30 centimeters. The main axis is short and has numerous side branches that criss-cross. The basal leaves are present at flowering time. They are stalked and lyre-shaped. The 8 to 10 lateral leaflets are lanceolate, the terminal leaflets are almost triangular and at the base truncated to almost heart-shaped. The underside of the basal leaves is densely tomentose, the upper side is loosely tomentose. The shell has a diameter of 6 to 8 millimeters. The terminal spine of the appendages is yellowish and 15 to 22 millimeters in size. At its base there are usually 2 pairs of reddish-brown, 3 to 5 millimeters long thorns. The fruits are 2 to 2.5 millimeters in size. Only on the inner fruits is there a pappus that is 2.5 to 3 millimeters long.
The flowering period extends from May to October.
The number of chromosomes is 2n = 22.
Occurrence
Centaurea idaea is endemic to Crete . The species grows in dry ruderal areas, over-grazed Phrygana and subalpine hedgehog cushion heaths at altitudes from 0 to 2370 meters.
literature
- Ralf Jahn, Peter Schönfelder: Excursion flora for Crete . With contributions by Alfred Mayer and Martin Scheuerer. Eugen Ulmer, Stuttgart (Hohenheim) 1995, ISBN 3-8001-3478-0 , p. 327 .
Individual evidence
- ↑ Centaurea idaea at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis