Summary ⁶

Erigeron canadensis (synonym Conyza canadensis) is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware.

Sources and Credits

1. (c) James N. Stuart, all rights reserved, uploaded by James N. Stuart
2. (c) Matthew Herron, some rights reserved (CC BY-NC), uploaded by Matthew Herron
3. (c) Nido Paras, some rights reserved (CC BY-NC), uploaded by Nido Paras
4. AnRo0002, no known copyright restrictions (public domain), http://commons.wikimedia.org/wiki/File:20151227Erigeron_canadensis6.jpg
5. (c) dirstine, all rights reserved, uploaded by dirstine
6. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Erigeron_canadensis

More Info

• iNat taxon page
• African Plants - a photo guide
• Atlas of Living Australia
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• Catalogo de Plantas y Líquenes de Colombia
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• OregonFlora.org
• SEINet Symbiota portals
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• 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

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