Arctium tomentosum

Arctium tomentosum
Close-up on a flowers
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Arctium
Species:
A. tomentosum
Binomial name
Arctium tomentosum
Mill. 1768
Synonyms[1]
  • Arctium leptophyllum Klokov
  • Lappa tomentosa (Mill.) Lam.

Arctium tomentosum, commonly known as the woolly burdock[2] or downy burdock, is a species of burdock belonging to the family Asteraceae.[3]

Description

Arctium tomentosum is a biennial herbaceous plant. The stem is erect, with ascending branches. It can reach a height of about 2 metres (6 ft 7 in). Leaves are grayish white and quite felted, green and glabrous toward the stem. Basal leaves are petiolate. Leaf blade is heart-shaped, with rather denticulater margins. They can reach a length of 20–50 centimetres (7.9–19.7 in) and a width of 10–30 centimetres (3.9–11.8 in). Flowers are purplish red, with a diameter of 0.9–1.2 centimetres (0.35–0.47 in). This species can be distinguished from related ones because the underside of the leaves is covered with white woolly hairs. Flowers and fruits appear from July to September.[4][5]

Taxonomy

Arctium tomentosum was first described by the English botanist Philip Miller in 1768.[6]

Distribution

Arctium tomentosum is native to Eurasia from Spain[7] to Xinjiang Province in western China.[5] It is also naturalized in other parts of the world such as North America.[8]

  • Plant
    Plant
  • Leaf
    Leaf
  • Inflorescence
    Inflorescence

References

  1. ^ The Plant List Arctium tomentosum Mill.
  2. ^ NRCS. "Arctium tomentosum". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 8 January 2016.
  3. ^ - Euro+Med PlantBase - The information resource for Euro-Mediterranean plant diversity.
  4. ^ Keil, David J. "Arctium tomentosum". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 19–21 . New York and Oxford: Oxford University Press. Retrieved 13 August 2025 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. ^ a b Flora of China Vol. 20-21 Page 153 毛头牛蒡 mao tou niu bang Arctium tomentosum Miller
  6. ^ "Arctium tomentosum Mill.". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 13 August 2025.
  7. ^ Altervista Flora Italiana, Bardana lanuta, Arctium tomentosum Mill. includes photos plus European distribution map
  8. ^ Biota of North America Program 2014 county distribution map

Bibliography

  • Javzandolgor, Chuluunbat; Baasanmunkh, Shukherdorj; Tsegmed, Zagarjav; Oyuntsetseg, Batlai; Gundegmaa, Vanjil; Choi, Hyeok Jae (2021). "Arctium tomentosum (Asteraceae): A new report of a native genus in the flora of Mongolia" (PDF). Korean Journal of Plant Taxonomy. 51 (4): 391–394. doi:10.11110/kjpt.2021.51.4.391. Retrieved 14 August 2025.
  • López-Vinyallonga, Sara; Romaschenko, Kostyantyn; Susanna, Alfonso; Garcia-Jacas, Núria (April 2011). "Systematics of the Arctioid group: Disentangling Arctium and Cousinia (Cardueae, Carduinae)". Taxon. 60 (2): 539–554. doi:10.1002/tax.602020.
  • Pignatti S. - Flora d'Italia (3 voll.) - Edagricole - 1982
  • Tutin, T.G. et al. - Flora Europaea, second edition - 1993
  • Zangheri P. - Flora Italica (2 voll.) - Cedam - 1976


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