Haloragales
Haloragales is the name of a plant taxon belonging to the order taxonomic category, which was used by Cronquist's (1981) classification system and abandoned in current classification systems (as APG 1998, its successor APG II of 2003, and the more up-to-date APWeb) because a monophyletic constituency responding to that name was not recovered.
Characters
Herbaceous. Flowers with reduced or no perianth, free styles, indehiscent fruits, seeds with endosperm. Inferior ovary with several locules and one ovule per locule.
Ecology
Most of them are aquatic or related to very humid environments.
Secondary hydrophily and anemophily.
Taxonomy
In Cronquist's 1981 classification system, the order belonged to subclass Rosidae and comprised two families:
- Haloragaceae (most species, 9 genera, today in Saxifragales)
- Gunneraceae (a single genus, South American, Gunnera, today in Gunnerales, a basal order of eudicotylenes)
Today (APG, APG II, APWeb) the order is no longer used.
References Cited
- ↑ a b Cronquist, A. 1981. An integrated system of classification of flowering plants. Columbia University Press, New York.
- ↑ a b Angiosperm Phylogeny Group. 1998. An ordinal classification for the families of flowering plants. Ann Misouri Bot. Gard. 85: 531-553.
- ↑ a b The Angiosperm Phylogeny Group. 2003. "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II". Botanical Journal of the Linnean Society141, 399-436. (pdf) here. (breakable link available on the Internet Archive; see history, first version and last).)
- ↑ a b Stevens, P. F. 2001 Angiosperm Phylogeny Website, version 7 (May 2006) and regularly updated since then.
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