Kew Millennium Seed Bank, UK
Seed from the Kew Millennium Seed Bank collection at Wakehurst, outside London in the UK.
Prosopis strombulifera (Fabaceae) - Argentine screwbean, creeping screwbean; native to Argentina - Prosopis strombulifera is classified by the U.S. Federal Government as a NOXIOUS WEED (present esp. in California).
http://en.wikipedia.org/wiki/Prosopis_strombulifera: Prosopis strombulifera is a species of mesquite or algarrobo, a shrub in the legume family. It is known by the English common names Argentine screwbean and creeping screwbean and the Spanish common name retortuño.[1] This shrub is native to Argentina, where it grows in saline soils. It became well-known in California after it was introduced to Imperial County and took hold in the wild, growing as an invasive noxious weed.[1] The plant grows from a network of long, spreading roots and may grow to three meters in height. Many plants may grow together in an area, forming a monotypic stand. The shrub has waxy-textured leaves made up of a pair of leaflets which are each divided into several pairs of secondary leaflets each up to a centimeter long. Whitish spines up to 2 centimeters long appear near the leaf bases. The inflorescence is a spherical head of many very narrow tubelike yellow flowers, the head measuring about 1.5 centimeters wide. The fruit is a bright yellow seed pod coiled tightly into a cylindrical stick up to 5 centimeters long. It contains several greenish seeds each about half a centimeter long.
other weblinks:
http://en.wikipedia.org/wiki/Mesquite
![Seed from the Kew Millennium Seed Bank collection at Wakehurst, outside London in the UK. <br />
<br />
Prosopis strombulifera (Fabaceae) - Argentine screwbean, creeping screwbean; native to Argentina - Prosopis strombulifera is classified by the U.S. Federal Government as a NOXIOUS WEED (present esp. in California).<br />
http://en.wikipedia.org/wiki/Prosopis_strombulifera: Prosopis strombulifera is a species of mesquite or algarrobo, a shrub in the legume family. It is known by the English common names Argentine screwbean and creeping screwbean and the Spanish common name retortuño.[1] This shrub is native to Argentina, where it grows in saline soils. It became well-known in California after it was introduced to Imperial County and took hold in the wild, growing as an invasive noxious weed.[1] The plant grows from a network of long, spreading roots and may grow to three meters in height. Many plants may grow together in an area, forming a monotypic stand. The shrub has waxy-textured leaves made up of a pair of leaflets which are each divided into several pairs of secondary leaflets each up to a centimeter long. Whitish spines up to 2 centimeters long appear near the leaf bases. The inflorescence is a spherical head of many very narrow tubelike yellow flowers, the head measuring about 1.5 centimeters wide. The fruit is a bright yellow seed pod coiled tightly into a cylindrical stick up to 5 centimeters long. It contains several greenish seeds each about half a centimeter long.<br />
other weblinks:<br />
http://en.wikipedia.org/wiki/Mesquite](https://www.jimrichardsonphotography.com/img-get2/I00007Z4wZOxvALE/fit=1000x750/MM7753-2010-07-23-11922.jpg)