Allioideae

Allioideae is the botanical name of a monocot subfamily of flowering plants in the family Amaryllidaceae, order Asparagales. It was formerly treated as a separate family, Alliaceae. The subfamily name is derived from the generic name of the type genus, Allium.

Successive revisions of the influential Angiosperm Phylogeny Group (APG) classification have changed the circumscription of the family. In the 1998 version, Alliaceae were a distinct family; in the 2003 version, combining the Alliaceae with the Agapanthaceae and the Amaryllidaceae sensu stricto was recommended but optional; in the 2009 version, only the broad circumscription of the Amaryllidaceae is allowed, with the Alliaceae reduced to a subfamily, Allioideae.

Note that quite a few of the plants that were once included in family Alliaceae have been assigned to the subfamily Brodiaeoideae (rather than the subfamily Allioideae).

Some of the species of Allium are important food plants for example onions (Allium cepa), chives (A. schoenoprasum), garlic (A. sativum and A. scordoprasum), and leeks (A. porrum). Species of Allium, Gilliesia, Ipheion, Leucocoryne, Nothoscordum, and Tulbaghia are cultivated as ornamentals.

Thirteen of the total of about 20 genera are endemic to temperate South America. Nothoscordum ranges from Argentina to Canada. Allium is indigenous to most of North America, Eurasia, and North Africa.

The largest genera are Allium (260-690 species), Nothoscordum (25), and Tulbaghia (22). Some of the generic limits are not clear. Ipheion, Nothoscordum, and possibly others are not monophyletic.

Allioideae is divided into three tribes: Allieae, Tulbaghieae, and Gilliesieae. Allieae contains only one genus Allium (Milula is merged with Allium in the latest systems). Tulbaghieae contains only Tulbaghia. Gilliesieae contains the remaining genera. Allieae is sister to a clade composed of Tulbaghia and Gilliesieae.

Read more about Allioideae:  Genera, History

Other articles related to "allioideae":

Asparagales - Diversity - Amaryllidaceae sensu Lato - Allioideae
... Members of the subfamily are found worldwide, in temperate, subtropical and tropical regions ... They are herbaceous perennials, usually with bulbs, although in some cases they have short rhizomes ...
Amaryllidaceae
... the Agapanthoideae (the old Agapanthaceae family), the Allioideae (the old Alliaceae family) and the Amaryllidoideae (the old Amaryllidaceae family) ... have superior ovaries, as do the Allioideae, the onion subfamily ... The Allioideae produce allyl sulfide compounds which give them their characteristic smell ...
Allioideae - History
... Alliaceae into three subfamilies Agapanthoideae, Allioideae, and Gilliesioideae ... Allioideae contained two tribes Brodiaeeae and a broadly defined Allieae ... Alliaceae sensu stricto became the subfamily Allioideae of Amaryllidaceae sensu lato ...
Liliaceae - Genera
... Allium Onion and garlic (Amaryllidaceae Allioideae, Asparagales) Amana (Liliaceae) Amaryllis Amaryllis (Amaryllidaceae Amaryllidoideae, Asparagales ... ismene (Amaryllidaceae Amaryllidoideae, Asparagales) Jaimehintonia (Amaryllidaceae Allioideae, Asparagales) Johnsonia (Laxmanniaceae, Asparagales) Kniphofia (Xanthorrhoeaceae Asphodeloideae ...
Alliaceae
... Allioideae is the botanical name of a monocot subfamily of flowering plants in the family Amaryllidaceae, order Asparagales ... circumscription of the Amaryllidaceae is allowed, with the Alliaceae reduced to a subfamily, Allioideae ... to the subfamily Brodiaeoideae (rather than the subfamily Allioideae) ...