genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
tree
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...
s up to tall in the family
Irvingiaceae
Irvingiaceae is a small family of flowering plants, consisting of about 13 species; it was erected by Exell and Mendonça in 1951.
The family and type genus were named after the Scottish naval surgeon, Edward George Irving.D. Gledhill. ''The Na ...
. Formerly it has been included in families
Simaroubaceae
The Simaroubaceae, also known as the quassia family, are a small, mostly tropical, family in the order Sapindales. In recent decades, it has been subject to much taxonomic debate, with several small families being split off. A molecular phyloge ...
and
Ixonanthaceae
Ixonanthaceae is a pantropical flowering plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and ( ...
. It contains the following two species:
* ''
Allantospermum borneense
''Allantospermum borneense'' is a tree in the family Irvingiaceae. The specific epithet ' is from the Latin meaning "of Borneo".
Description
''Allantospermum borneense'' grows as a large tree up to tall with a trunk diameter of up to and large ...
'' –
Malesia
Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms. It is a phytogeographical floristic region in the Paleotropical kingdom. It was first recognized as a distinct region ...
* ''
Allantospermum multicaule
''Allantospermum'' is a genus of trees up to tall in the family Irvingiaceae. Formerly it has been included in families Simaroubaceae and Ixonanthaceae. It contains the following two species:
* '' Allantospermum borneense'' – Malesia
* '' Al ...
'' –
Madagascar
Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...