orange-peel clematis, yellow clematis
(Clematis tangutica)
This species is Introduced in the United States
ORIGIN: Eurasia
GROWTH TRAITS: Clematis tangutica is a perennial climbing vine (typical) or scrambling shrub (atypical) growing from a fine, branched root system. Vines (stems) are pliable when young, becoming woody with age. Vines are typically ≤13’ long (4 m). Vines smother trees, shrubs, walls, utility poles, etc. by climbing with tendril-like petioles. Leaves are compound, green, opposite, and deciduous. Each leaf has 5-7 lance-shaped and lobed leaflets. Both species have drooping flowers with 4 showy, yellow, petal-like sepals. Sepals may be tinged purplish. Flowering occurs in late summer. At maturity, the fruit consists of numerous small seeds, each with a long silky tail ~2” long (5 cm) that give the fruit a pom-pom appearance. Clematis tangutica sepals are lemon yellow and bell-shaped at first but split and spread slightly at maturity. Flowers are typically solitary but sometimes occur in groups of 2-3 at stem tips or in leaf axils.
REPRODUCTION: Species spread by seed, rooting vines, and sprouting from root crowns. It is unknown how long seeds remain viable in the soil.
HABITAT: Clematis tangutica can be found along open sunny roadsides, riparian corridors, rocky slopes, and even partially shaded woodlands.
LOOK-ALIKES: Several native and exotic Clematis spp. occur in the Northwest. The yellow flowers and 5-7 leaflets help differentiate these two species from look-alikes, which typically have white or purple flowers and/or only 3 leaflets per leaf.
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
GROWTH TRAITS: Clematis tangutica is a perennial climbing vine (typical) or scrambling shrub (atypical) growing from a fine, branched root system. Vines (stems) are pliable when young, becoming woody with age. Vines are typically ≤13’ long (4 m). Vines smother trees, shrubs, walls, utility poles, etc. by climbing with tendril-like petioles. Leaves are compound, green, opposite, and deciduous. Each leaf has 5-7 lance-shaped and lobed leaflets. Both species have drooping flowers with 4 showy, yellow, petal-like sepals. Sepals may be tinged purplish. Flowering occurs in late summer. At maturity, the fruit consists of numerous small seeds, each with a long silky tail ~2” long (5 cm) that give the fruit a pom-pom appearance. Clematis tangutica sepals are lemon yellow and bell-shaped at first but split and spread slightly at maturity. Flowers are typically solitary but sometimes occur in groups of 2-3 at stem tips or in leaf axils.
REPRODUCTION: Species spread by seed, rooting vines, and sprouting from root crowns. It is unknown how long seeds remain viable in the soil.
HABITAT: Clematis tangutica can be found along open sunny roadsides, riparian corridors, rocky slopes, and even partially shaded woodlands.
LOOK-ALIKES: Several native and exotic Clematis spp. occur in the Northwest. The yellow flowers and 5-7 leaflets help differentiate these two species from look-alikes, which typically have white or purple flowers and/or only 3 leaflets per leaf.
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.
Taxonomic Rank
| Domain: Eukarya |
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Superorder: Ranunculanae |
| Order: Ranunculales |
| Family: Ranunculaceae |
| Genus: Clematis |
| Clematis tangutica |
References
Common Name Reference: USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL: http://www.ars-grin.gov/cgi-bin/npgs/html/queries.pl
Scientific Name Reference: USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.