Archidendron bigeminum is a tree

Tree

A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...

 species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 in the legume family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 (Fabaceae

Fabaceae

The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family, is a large and economically important family of flowering plants. The group is the third largest land plant family, behind only the Orchidaceae and Asteraceae, with 730 genera and over 19,400 species...

). It is found in India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and Sri Lanka

Sri Lanka

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

.

The World Conservation Monitoring Centre

World Conservation Monitoring Centre

The United Nations Environment Programme's World Conservation Monitoring Centre is an executive agency of the United Nations Environment Programme, based in Cambridge in the United Kingdom. UNEP-WCMC has been part of UNEP since 2000, and has responsibility for biodiversity assessment and support...

 (WCMC) in the 1998 IUCN Redlist reviewed Abarema bigemina and Pithecellobium gracile as Vulnerable species

Vulnerable species

On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...

. These are nowadays both considered junior synonyms of Archidendron bigeminum. It may be that the Indian population consists of a smaller-growing variety than that on Sri Lanka.

The complete list of junior synonyms is:

• Abarema abeywickramae Kosterm.
• Abarema bigemina (L.) Kosterm.
• Abarema monadelpha (Roxb.) Kosterm.
• Abarema monadelpha (Roxb.) Kosterm. var. gracile (Bedd.) Kosterm.
• Archidendron monadelphum (Roxb.) I.C.Nielsen
• Archidendron monadelphum (Roxb.) I.C.Nielsen var. gracile (Bedd.) Sanjappa
• Inga bigemina (L.) Willd.
• Mimosa bigemina L.
• Mimosa monadelpha Roxb.
• Pithecellobium bigeminum (L.) Mart.
• Pithecellobium bigemium (L.) Mart.
• Pithecellobium gracile Bedd.
• Pithecellobium nicobaricum Prain