Summary ⁷

Equisetum palustre, the marsh horsetail or the Humpback, is a plant species belonging to the division of horsetails (Equisetopsida).

Range description ⁸

This species is extremely widely distributed, occurring throughout much of the boreal and temperate zones of the Northern Hemisphere, from Europe east through the Middle East, the Caucasus, Siberia, Kazakhstan and Mongolia to Kamchatka, Primorskye and Sakhalin Island in the Russian Far East, China and Japan and over to North America (Canada and USA). It occurs more or less throughout Europe. It is found growing from sea level up to 2,000 m asl.

Description ⁹

Aerial stems monomorphic, green, branched or unbranched, 20--80 cm; hollow center small, to 1/3 stem diam.; vallecular canals nearly as large. Sheaths elongate, 4--9 × 2--5 mm; teeth dark, 5--10, narrow, 2--5 mm, margins white, scarious. Branches when present only from midstem nodes, spreading, hollow; ridges 4--6; valleys rounded; 1st internode of each branch shorter than subtending stem sheath; sheath teeth narrow. 2 n =216.

Synonym ¹⁰

Equisetum palustre var. americanum Victorin

Habitat and ecology ¹¹

Habitat and Ecology

• Terrestrial
• Freshwater

Iucn red list assessment ¹²

National nature serve conservation status ¹³

Canada

United States

Threats ¹⁴

Major Threats

Sources and Credits

1. (c) Nuuuuuuuuuuul, some rights reserved (CC BY), https://www.flickr.com/photos/tonreg/14454297761/
2. (c) anonymous, some rights reserved (CC BY-NC), http://www.biopix.com/PhotosMedium/JCS%20Equisetum%20palustre%2017822.jpg
3. (c) anonymous, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Equisetum-palustre-62878.JPG
4. (c) anonymous, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Equisetum-palustre-62876.JPG
5. (c) anonymous, some rights reserved (CC BY-NC), http://www.biopix.com/photos/JCS-Equisetum-palustre-62883.JPG
6. (c) licensed media from BioImages DwCA without owner, some rights reserved (CC BY-NC-SA), http://www.bioimages.org.uk/html/../image.php?id=38923
7. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Equisetum_palustre
8. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/34448502
9. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/5007779
10. (c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/19823756
11. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/34448504
12. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/34448501
13. (c) NatureServe, some rights reserved (CC BY-NC), http://eol.org/data_objects/29139060
14. (c) International Union for Conservation of Nature and Natural Resources, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/34448505

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora Digital de Portugal
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• NatureServe Explorer 2.0
• NBN Atlas
• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online
• 日本のレッドデータ検索システム
• 植物和名−学名インデックス YList

Range Map

(c) Barcode of Life Data Systems, some rights reserved (CC-BY)

iNat Map