The Asparagales reference article from the English Wikipedia on 24-Jul-2004
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Asparagales

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Asparagales
Scientific classification
Kingdom: Plantae
Division : Magnoliophyta
Class : Liliopsida
Order: Asparagales
Families
according to the
Angiosperm Phylogeny Group
Agapanthaceae
Agavaceae
Alliaceae
Amaryllidaceae
Aphyllanthaceae
Asparagaceae
Asphodelaceae
Asteliaceae
Blandfordiaceae
Boryaceae
Doryanthaceae
Hemerocallidaceae
Hyacinthaceae
Hypoxidaceae
Iridaceae
Ixioliriaceae
Lanariaceae
Laxmanniaceae
Orchidaceae
Ruscaceae
Tecophilaeaceae
Themidaceae
Xanthorrhoeaceae
Xeronemataceae

Asparagales is an order of monocots which includes a number of families of non-woody plants. In older classification systems, the families now included in the Asparagales were included in order Liliales, and some genera of which were even included in family Liliaceae. Some classification systems separate some of the families listed below into additional orders, including orders Orchidales and Iridales, while other systems, especially the Angiosperm Phylogeny Group's APG classification system, include the Orchidales and Iridales within the Asparagales.

The Angiosperm Phylogeny Group's classification system is widely used by botanists, and was updated as the APG II in 2002 to include recent findings, especially in DNA analysis. Their 1998 scheme identified 29 families in order Asparagales. The APG II consolidates some families, and recognizes an alternative system of fewer, larger families, in which certain smaller families can be grouped within other larger families based on close genetic affinities and still follow the 'APG system' . Under the new classification system one could, for example, correctly include daylilies (Hemerocallis) in family Hemerocallidaceae, or in family Xanthorrhoeaceae. The APG II classification of the Asparagales is as follows:

Classification systems that separate the Asparagales, Orchidales and Iridales are generally organized as follows: