Echinops sphaerocephalus explained

Echinops sphaerocephalus, known by the common names glandular globe-thistle, great globe-thistle or pale globe-thistle, is a Eurasian species of globe-thistle belonging to the tribe Cardueae within the family Asteraceae.

Description

Echinops sphaerocephalus is a glandular, woolly perennial herbaceous plant with an average height of 50-, occasionally reaching 200 cm (80 inches).[1]

Its erect branching, gray, slightly wrinkled and hairy stems bear the occasional large, soft, sharply toothed, sharp-lobed pointed green leaves. They are sticky hairy above, and white woolly below.[1]

Atop each stem is an almost perfectly spherical inflorescence up to 6 cm in diameter, packed with white or blue-gray disc florets. It flowers from June until September.[1] [2]

The flowers are pollinated by insects (usually bees, wasps and butterflies) (entomogamy) and are hermaphrodite (self fertilization or autogamy). The fruits are hairy cylindrical achenes about 7 to 8 mm long. They ripen from September through October. The seeds are dispersed by wind (anemochory).[1]

Distribution

This species is widespread across much of Eurasia but it lives on other continents where it was introduced, including North America where it is a widespread weed.[1] [3] [4] It is very common in the mountains of southern France and southern and central Europe.[5]

Habitat

It grows in sunny, rocky or brushy places in more or less mineral rich soils at an altitude of 0- above sea level.

Subspecies

External links

Notes and References

  1. http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200023870 Flora of China, 蓝刺头 lan ci tou Echinops sphaerocephalus Linnaeus
  2. Book: Rose, Francis. Francis Rose . The Wild Flower Key . 1981 . Frederick Warne & Co. 0-7232-2419-6 . 386–387.
  3. http://bonap.net/MapGallery/County/Echinops%20sphaerocephalus.png Biota of North America Program 2014 county distribution map
  4. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200023870 Flora of North America, Great globe-thistle, boulette commune, Echinops sphaerocephalus Linnaeus, Sp. Pl. 2: 814. 1753.
  5. http://luirig.altervista.org/flora/taxa/index1.php?scientific-name=echinops+sphaerocephalus Altervista Flora Italiana, Cardo pallotta maggiore, drüsige Kugeldistel, bolltistel, Echinops sphaerocephalus L.