Echinops

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Echinops /ˈɛkɪnɒps/[1] is a genus of about 130 species of flowering plants in the family Asteraceae, commonly known as globe thistles. They have spiny foliage and produce blue or white spherical flower heads. They are distributed from central Asia, Mongolia and north-eastern China to the Mediterranean basin, temperate regions of Eurasia, reaching to Indian subcontinent and tropical Africa.[2][3] Globe thistles are a common host plant for weevils of the genus Larinus.[4]

Characteristics

File:Illustration Echinops sphaerocephalus0.jpg
Illustration of globe thistle Echinops sphaerocephalus

Source:[5]

Vegetative characteristics

The globe thistle species are perennial herbaceous plants. They form rhizomes as perennial organs. The independently upright stems are angular. The alternately arranged leaves are one to two-pinnately divided and white, woolly and tomentose on the underside.

Generative features

File:Echinops ritro 01.jpg
Echinops ritro

The capitulas are single-flowered, have a hermaphrodite tubular flower and are surrounded by a multi-rowed sheath. Numerous capitulas form spherical inflorescences of the second order, which have a diameter of 4 to 8 centimeters. The capitulas bloom from top to bottom within a head. The corolla is tubular, divided almost to the base. The flower color is steel blue to white, the inflorescences as a whole are usually bluish. The stamens are blue-gray. The achenes are cylindrical, pentagonal and hairy. The pappus has short scales.

Human uses

Many species belonging to the genus Echinops are traditionally used as medicinal herbs in Africa, Asia and Europe. More than 151 natural products have been reported from this genus, many of which contain an unusual alkyne- and thiophene-containing structure. Various extracts, essential oils, and isolated compounds from members of this genus have been shown to have anti-microbial, cytotoxic, and anti-inflammatory effects in vitro.[6]

File:Echinoynethiophene A.svg
Echinoynethiophene A is one such compound isolated from Echinops grijsii

However, there are a number of species in this genus that are claimed to have traditional medicinal uses but their chemical composition has not yet been evaluated.[7]

Echinops plants have been traditionally employed in folk medicine to treat inflammation, pain, fever, cough, and sore throat; as an aphrodisiac; to facilitate expulsion of a retained placenta postpartum; as an abortifacient; and in the management of uterine tumors and leucorrhoea.[8][9]

Selected species

Species include:

References

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  1. ^ Sunset Western Garden Book, 1995:606–607
  2. ^ Page Module:Citation/CS1/styles.css has no content.RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Montazerolghaem, Somayeh; Susanna, Alfonso; Calleja, Juan Antonio; Mozaffarian, Valiollah; Rahiminejad, Mohammad Reza (2017). "Molecular systematics and phylogeography of the genus Echinops (Compositae, Cardueae–Echinopsinae): Focus on the Iranian centre of diversification". Phytotaxa. 297 (2): 101. doi:10.11646/phytotaxa.297.2.1.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Skuhrovec, Jiří; Volovnik, Semyon; Gosik, Rafał (2017-06-12). "Description of the immature stages of Larinus vulpes and notes on its biology (Coleoptera, Curculionidae, Lixinae)". ZooKeys (679): 107–137. Bibcode:2017ZooK..679..107S. doi:10.3897/zookeys.679.12560. ISSN 1313-2970. PMC 5523399. PMID 28769711.
  5. ^ Page Module:Citation/CS1/styles.css has no content."Echinops in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2024-07-21.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Bitew, Helen; Hymete, Ariaya (2019-11-01). "The Genus Echinops: Phytochemistry and Biological Activities: A Review". Frontiers in Pharmacology. 10: 1234. doi:10.3389/fphar.2019.01234. ISSN 1663-9812. PMC 6838032. PMID 31736749.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Bitew, Helen; Hymete, Ariaya (2019-11-01). "The Genus Echinops: Phytochemistry and Biological Activities: A Review". Frontiers in Pharmacology. 10: 1234. doi:10.3389/fphar.2019.01234. ISSN 1663-9812. PMC 6838032. PMID 31736749.
  8. ^ Page Module:Citation/CS1/styles.css has no content.Ghasemi, Pirbalouti A.; Momeni, M.; Bahmani, M. (2013). "Ethnobotanical study of medicinal plants used by Kurd tribe in Dehloran and Abdanan districts, Ilam province, Iran". African Journal of Traditional, Complementary and Alternative Medicines. 10 (2): 368–385. doi:10.4314/ajtcam.v10i2.24. PMC 3746586. PMID 24146463. Retrieved 2024-07-21.
  9. ^ Page Module:Citation/CS1/styles.css has no content.Okello, Jimmy; Ssegawa, Paul (2007). "Medicinal plants used by communities of Ngai Subcounty, Apac District, northern Uganda". African Journal of Ecology. 45: 76–83. Bibcode:2007AfJEc..45S..76O. doi:10.1111/j.1365-2028.2007.00742.x.

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