- Firmiana simplex, parasoltree, is a deciduous tree native to Asia. It has green stems and bark. F. simplex has a dense, upright, oval canopy and grows from 35-50 ft. (10-15 m) tall with a spread of between 15-20 ft. (4.6-6 m).
- The alternate, bright green, palmately veined, three to five-lobed leaves of F. simplex are extremely large with each leaf reaching up to 12 in. (30.5 cm) across. The foliage of F. simplex often turns bright yellow in fall.
- Firmiana simplex has abundant showy slightly fragrant flowers that appear in late spring or early summer. The flowers are held in terminal, large 10-20 in. (25.4-50.8 cm) wide, loose panicles clustered at the tips of last year’s branches. The flowers lack petals, but have sepals that are yellow and white.
- F. simplex fruit are peculiar pods which split open into petal-like sections to reveal the small, round seeds.
- Ecological Threat
- Firmiana simplex is beginning to be reported more often along roadsides and other disturbed areas. This plant is self-fertile which means it only takes one tree to produce fertile seeds. The prolific seed production along with its quick growth and aggressive competition make F. simplex a candidate for EDRR - Early Detection & Rapid Response program in the warmer regions of the United States.
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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 Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- Georgia Exotic Pest Plant Council - Category 4
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Reichard, Sarah. 1994. Assessing the potential of invasiveness in woody plants introduced in North America. University of Washington Ph.D. dissertation.
- South Carolina Exotic Pest Plant Council - Severe Threat
- Tennessee Exotic Pest Plant Council
- WeedUS - Database of Plants Invading Natural Areas in the United States
|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.|