Editing Hydatellales

{{merge to|Trithuria|discuss=Talk:Trithuria#Merge proposal|date=November 2024}}
{{Short description|Order of flowering plants}}
'''Hydatellales''' is a [[botanical name]] for an [[order (biology)|order]] of [[flowering plant]]s. In the [[Cronquist system]], 1981, the name was used for an order placed in the subclass [[Commelinidae]] in class [[Liliopsida]] [=monocotyledons]. The order consisted of one family only:

* order Hydatellales
*: family [[Hydatellaceae]]

Similarly the [[Dahlgren system]] recognised this order (with the same circumscription and placed it in superorder [[Commelinanae]] in subclass [[Liliidae]] [=monocotyledons].

The [[APG II system]] assigns these plants to the order [[Poales]], close to the grasses and sedges. Recent study by Saarela ''et al.'',<ref>Saarela, Jeffery M., Hardeep S. Rai, James A. Doyle, Peter K. Endress, Sarah Mathews, Adam D. Marchant, Barbara G. Briggs & Sean W. Graham. 2007. Hydatellaceae identified as a new branch near the base of the angiosperm phylogenetic tree. Nature 446:312-315.</ref> however, suggests a position out of the Poales; here, the Hydatellaceae link with the [[Nymphaeaceae|waterlilies]], the first time a plant has been ejected from the monocots. The [[Angiosperm Phylogeny Website]]<ref>Stevens, P. F. (2001 onwards). Nymphaeales. Angiosperm Phylogeny Website. Version 7, May 2006. Accessed 21 March 2007.</ref> had since updated the [[Nymphaeales]] page to include the family.

==References==
{{Reflist}}

[[Category:Historically recognized angiosperm orders]]