Lespedeza cuneata

Lespedeza cuneata is a species of flowering plant in the legume family known by the common names Chinese bushclover and sericea lespedeza, or just sericea.[1] It is native to Asia and eastern Australia[2] and it is present elsewhere as an introduced species and sometimes an invasive plant.[3]

Lespedeza cuneata
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
Tribe:
Desmodieae
Genus:
Lespedeza
Species:
L. cuneata
Binomial name
Lespedeza cuneata

This plant is a perennial herb with branching stems reaching a maximum height around two meters. It grows from a woody taproot which may exceed one meter in length and which is topped with a woody caudex. The stems are covered densely in leaves, which are each divided into leaflets up to 2.5 centimetres (1 inch) long. Flowers occur singly or in clusters of up to three in the leaf axils. Some of the flowers are cleistogamous, remaining closed and self-pollinating.[1] The open flowers are purple, cream, white, or yellowish in color.[3] The fruit is a legume pod containing one seed.[1]

This plant has been introduced to the United States, South Africa, Brazil, Canada, and Mexico.[3] It was first planted in the US in North Carolina in 1896. It was used to control erosion and to revegetate abandoned mine sites and was used as forage for livestock. It was useful in areas susceptible to drought because its deep roots can keep it alive. A number of cultivars have been developed, including 'Arlington', 'Serala', 'AU Lotan', 'AU Donnelly', 'AU Grazer', and 'Interstate'.[1]

The plant is considered invasive in many areas. When it invades a habitat it reduces the abundance and diversity of native plants and can make the area less attractive to wildlife. It may inhibit the growth of tree seedlings. It may be allelopathic, producing substances that chemically inhibit the growth of other plants.[1]

Possible biological pest control agents include the Lespedeza webworm (Tetralopha scortealis). It will probably not be approved for use, however, because it does not discriminate between native and invasive Lespedezas. Grazing may also be a way to control the plant, especially by goats.[1]

Noxious Weeds laws

United States

At least the following states have restrictions on this plant: Colorado, Kansas, Nebraska, and New York[4]

  • A lespedeza sericea plant growing in Kansas. This plant was 2 1/2 feet tall. Taken in September 2013.
  • A lespedeza sericea plants growing in Kansas (with two more in the background). Taken in September 2013.
  • Lespedeza sericea plant up close. Shows the leaf pattern. Taken in September before the blooms started.

References
  1. Gucker, Corey. (2010) (Revised from Munger, Gregory T., 2004). Lespedeza cuneata. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Retrieved 11-26-2011.
  2. "Lespedeza cuneata". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2011-11-26.
  3. Lespedeza cuneata. Global Invasive Species Database. Retrieved 11-26-2011.
  4. http://www.dec.ny.gov/docs/lands_forests_pdf/isprohibitedplants2.pdf
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