yellow archangel
(Lamium galeobdolon)
This species is Introduced in the United States
Appearance
Small to medium-sized, semi-evergreen in southern climates (dies back to the ground in colder climates) perennial groundcover. Grows to 2 ft tall and 1.5 ft wide in a trailing, upright, or radiating clump habit. The stems are square and can root at the nodes.
Foliage
The leaves are medium to dark green, opposite, hairy, often variegated with silver-gray marking, ovate, acute tip, and the margins are toothed. Leaves at the base have long petioles and upper stem leaves have no petiole.
Flowers
Flowers appear in April-May, are small, yellow, and tubular with a hooded upper petal and lipped lower petal; they grow in pairs of clusters close to stems between leaves on flowering stems that are 1 to 2 feet tall.
Fruit
Brown and inconspicuous
Citations
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzländer. 2014. New Invaders of the Northwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://www.fs.fed.us/foresthealth/technology/pdfs/FHTET-2014-12_NW_New_Invaders.pdf
Small to medium-sized, semi-evergreen in southern climates (dies back to the ground in colder climates) perennial groundcover. Grows to 2 ft tall and 1.5 ft wide in a trailing, upright, or radiating clump habit. The stems are square and can root at the nodes.
Foliage
The leaves are medium to dark green, opposite, hairy, often variegated with silver-gray marking, ovate, acute tip, and the margins are toothed. Leaves at the base have long petioles and upper stem leaves have no petiole.
Flowers
Flowers appear in April-May, are small, yellow, and tubular with a hooded upper petal and lipped lower petal; they grow in pairs of clusters close to stems between leaves on flowering stems that are 1 to 2 feet tall.
Fruit
Brown and inconspicuous
Citations
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzländer. 2014. New Invaders of the Northwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://www.fs.fed.us/foresthealth/technology/pdfs/FHTET-2014-12_NW_New_Invaders.pdf
Selected Images
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Lists - This map identifies those states that have this species on their invasive species list or law.
Invasive Listing Sources
- City of Ann Arbor Michigan Parks and Recreation
- Invasive Plant Species of West Virginia
- Jil Swearingen, personal communication, 2009-2017
- National Park Service, Mid-Atlantic Exotic Plant Management Team Invasive Plant List
- National Park Service, National Capital Region Exotic Plant Management Team Invasive Plant List
- Native Plant Society of Oregon, 2008
- New Invaders of the Northwest
- New Jersey Invasive Species Strike Team 2017 Invasive Species List
- Non-Native Invasive Plants of Arlington County, Virginia
- Non-Native Invasive Plants of the City of Alexandria, Virginia
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- Plant Invaders of Mid-Atlantic Natural Areas
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
Taxonomic Rank
| Domain: Eukarya |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Superorder: Asteranae |
| Order: Lamiales |
| Family: Lamiaceae |
| Genus: Lamium |
| Lamium galeobdolon |
References
Common Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.
Scientific Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.