- Source: Eryngium alpinum
Eryngium alpinum, the alpine sea holly, alpine eryngo or queen of the Alps, is a herbaceous perennial plant in the family Apiaceae.
Description
Eryngium alpinum is a hemicryptophyte, its overwintering buds are situated just below the soil surface and the floral axis more or less erect with a few leaves. The roots are deep and robust.
The stems are solitary and erect, usually with three branches on the apex and with longitudinal purple stripes. This plant generally reaches about 30–70 centimetres (12–28 in) in height, with a maximum of 100 centimetres (39 in). The basal leaves are oval or heart-shaped, 10–15 centimetres (3.9–5.9 in) wide and 13–17 centimetres (5.1–6.7 in) long, with toothed hedges and a long petiole. The cauline leaves are sessile and progressively more divided.
The inflorescences are dense umbels at the top of the main branches. They are bright green at the bases and the stiff, bristly bracts are blue. They are about 4 cm long and 2 cm diameter and the bracts are up to 25 centimetres (9.8 in) long. The flowers inside are about 2 mm long. The peripheral flowers are sterile and the internal flowers are hermaphroditic. Both types are actinomorphic and pentamerous, with five petals. Flowering occurs in July through September. The flowers are -insect-pollinated. The fruit is a spiny achene about half a centimeter wide.
Distribution and habitat
This plant is native to Austria, Liechtenstein, Croatia, France, Switzerland, Italy, and Slovenia. It grows in subalpine scrub, rocky areas and wet pastures, preferably in limestone, at an altitude of 1,500–2,000 metres (4,900–6,600 ft) above sea level.
Cultivation
Eryngium alpinum is cultivated as an ornamental plant for its blue and purple flowerheads. It requires dry, well-drained soil and full sun.
Conservation
Wild populations of the species are in decline due to overcollection for ornamental use and habitat degradation from recreational activity and grazing. Numerous local extinctions of subpopulations have occurred.
Gallery
References
External links
Media related to Eryngium alpinum at Wikimedia Commons
Data related to Eryngium alpinum at Wikispecies
Flora Europaea: Eryngium alpinum
"Eryngium alpinum". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
Acta Plantarum: Eryngium alpinum Archived 2016-03-03 at the Wayback Machine
Kata Kunci Pencarian:
- Eryngium
- Flora Lebanon
- Eryngium alpinum
- Eryngium
- List of Eryngium species
- Giardino Botanico Montano di Pratorondanino
- Flora of the Alps
- Eryngium ebracteatum
- Habitats Directive
- Rennsteiggarten Oberhof
- Podbrdo, Tolmin
- List of near threatened plants
