Echinops echinatus

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Echinops echinatus
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Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Echinops
Species:
E. echinatus
Binomial name
Echinops echinatus

Echinops echinatus, the Indian globe thistle, commonly known as Usnakantaka, [1] is a species of globe thistle, found in India, Pakistan, and Sri Lanka. Indian globe thistle is an erect branched herb about 100 cm high. It has short, stout stems, branching from the base, covered with white cottony hair. Alternately arranged oblong, deeply pinnatifid leaves are 7–12 cm long. Flower heads occur in solitary white spherical balls, 3–5 cm across. Petals of the tiny white disc florets are 5 mm long. Flowers are surrounded by straight, strong, white bristles. Often misidentified with Silybum marianum (L.) Gaertner, [2] it is colloquially known as Camel's thistle. [1]

Contents

Flowering

From December to January. [1]

Chemistry

2',5,7- trihydroxy-3.6-dimethoxy flavone-7-O-b-D-galactopyranosyl-[1®4]-O-a-L-rhamnopyranoside is reported from the seeds of Echinops echinatus. 7-hydroxyisoflavone, kaempferol-4'-methylether, kaempferol-7-methylether, myricetin-3-O-a-L-rhamnoside, kaempferol and kaempferol-3-O-a-L-rhamnoside, are reported from the whole plant of Echinops echinatus.

An antiinflammatory active flavanone glycoside 5,7-dihydroxy-8,4'-dimethoxyflavanone-5-O-a-L-rhamnopyranosyl-7-O-b-D-arabinopyranosyl-(1®4)-O-b-D-glucopyranoside A along with a known compound dihydroquercetin-4'-Me ether is also reported from the leaves of Echinops echinatus.

Apigenin, apigenin 7-O-glucoside, and a new acylflavone glucoside named echitin (I) were isolated from Echinops echinatus flowers.

Echinopsidine, a potential MAOI, is found in this species along with the related alkaloids echinopsine and echinozolinone.

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Echinops sahyadricus, the Sahyadri globe thistle, is a species of flowering plant. It is a medium sized forb belong to the tribe Cardueae in the family Asteraceae. E. sahyadricus was discovered by a Mumbai University student at the Rajgad Fort, and it was formally described in 2020.

References

  1. 1 2 3 Maurya, Santosh Kumar; Kushwaha, Ashwini Kumar; Seth, Ankit (2015). "Ethnomedicinal review of Usnakantaka (Echinops echinatus Roxb.)". Pharmacognosy Reviews. 9 (18): 149–154. doi: 10.4103/0973-7847.162138 . ISSN   0973-7847. PMC   4557238 . PMID   26392713.
  2. Khan, M. A.; Niazi, H. A.; Khalid, S. (2000). "Ethnobotany and taxonomic studies of Echinops echinatus Roxb. (Untkatara) from Potohar region of Pakistan". Hamdard Medicus (Pakistan). ISSN   0250-7188.