Description ⁴

Also known as Common Toadflax this very attractive plant resembles a yellow perennial snapdragon. It is widely found in gardens and invading roadsides in most Yukon communities. It is usually less than 50 cm tall, persistent and mildly toxic. These plants are restricted noxious weeds in Alaska.

Range in Yukon ⁴

Greater Butter-and-eggs has been found in most communities, primarily from intentional garden plantings. It is widespread in the Whitehorse and Dawson areas, and along the South Canol Road in the Quiet Lake area, Watson Lake and Haines Junction. It is mainly spread through yard waste.

Similar Species ⁴

Dalmatian Toadflax (Linaria dalmatica) is much more invasive. It is larger with oval clasping leaves and in Yukon is known only from the Alaska Highway on the banks of the Rancheria River where it was apparently eradicated.

Ecological Impact ⁴

Both species are persistent and aggressive invader and may form dense colonies and suppress native grasses and other perennials. They contain a poisonous glucoside that is moderately poisonous to livestock. They are known to alter local pollination ecology and reduce yields in croplands.

Control ⁴

Perennial plants require depletion of nutrient reserves in the root system, prevention of seed production and prevention of dispersal. Greater Butter-and eggs reproduces both by seed and roots in Yukon.

For more information visit: Yukon Invasive Species Council

Sources and Credits

1. (c) Dan Mullen, some rights reserved (CC BY-NC-ND), http://www.flickr.com/photos/8583446@N05/2650439658
2. (c) Georg Slickers, some rights reserved (CC BY-SA), https://upload.wikimedia.org/wikipedia/commons/thumb/3/36/Linaria_vulgaris_20050825_976.jpg/460px-Linaria_vulgaris_20050825_976.jpg
3. (c) Kari Pihlaviita, some rights reserved (CC BY-NC), http://farm3.staticflickr.com/2853/9437324086_e6bdd03254_o.jpg
4. (c) L.G. Johanson, some rights reserved (CC BY-SA)

More Info

• iNaturalist.ca taxon page
• African Plants - a photo guide
• Atlas of Living Australia
• 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
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• New Zealand Plant Conservation Network
• 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) NatureServe, some rights reserved (CC-BY-NC)

iNaturalist.ca Map