The subfamily Dialioideae is one of the subdivisions of the plant

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ...

(

legume Legumes are plants in the pea family Fabaceae (or Leguminosae), or the fruit or seeds of such plants. When used as a dry grain for human consumption, the seeds are also called pulses. Legumes are grown agriculturally, primarily for human consum ...

s). This subfamily includes many tropical trees and shrubs. The subfamily consists of 17 genera, which are widespread throughout the

tropics The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's ax ...

. It has the following clade-based definition:

The most inclusive crown clade containing '' Poeppigia procera'' C.Presland '' Dialium guianense'' (Aubl.) Sandwith, but not '' Cercis canadensis'' L., '' Duparquetia orchidacea'' Baill., or '' Bobgunnia fistuloides'' (Harms) J. H. Kirkbr. & Wiersema

Members of the family also share the following morphological characteristics: the presence of cymose

inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...

s, the absence of vestured pits in the

xylem Xylem is one of the two types of transport tissue (biology), tissue in vascular plants, the other being phloem; both of these are part of the vascular bundle. The basic function of the xylem is to transport water upward from the roots to parts o ...

, and a high degree of organ loss.

Taxonomy

Dialioideae comprises the following genera: * '' Androcalymma'' Dwyer * '' Apuleia'' Mart. * '' Baudouinia'' Baill. * ''

Dialium ''Dialium'' is a genus of flowering plants in the family Fabaceae, subfamily Dialioideae. Velvet tamarind is a common name for several species. The genus includes 37 species which range from the tropical Americas to sub-Saharan Africa, Madagasca ...

'' L. * '' Dicorynia'' Benth. * '' Distemonanthus'' Benth. * '' Eligmocarpus'' Capuron * '' Kalappia'' Kosterm. * '' Koompassia'' Maingay ex Benth. * '' Labichea'' Gaudich. ex DC. * '' Martiodendron'' Gleason * '' Mendoravia'' Capuron * '' Petalostylis'' R.Br. * '' Poeppigia'' C.Presl * '' Storckiella'' Seem * '' Uittienia'' Steenis * '' Zenia'' Chun

Phylogenetics

Dialioideae exhibits the following phylogenetic relationships: (compare )

References

{{Taxonbar, from=Q29578388 Rosid subfamilies