Ruppiaceae

Taxobox
name = Ruppiaceae

---

image_width = 230px
image_caption = from [http://runeberg.org/nordflor/ Lindman]
regnum = Plantae
ordo = Alismatales
familia = Ruppiaceae
familia_authority = Horan. (1834)
subdivision_ranks = genera
subdivision = see text

Ruppiaceae is the botanical name of a family of flowering plants. Such a family has been recognized by relatively few taxonomists.

The APG II system, of 2003 (unchanged from the APG system, of 1998), does recognize such a family and places it in the order Alismatales, in the clade monocots. The family consists of a single genus "Ruppia", also known as the "ditch grasses".

According to the [http://www.mobot.org/MOBOT/Research/APweb/welcome.html AP-Website] the family is doubtfully distinct from the family Cymodoceaceae: the plants in the three families Cymodoceaceae, Posidoniaceae and Ruppiaceae form a monophyletic group.

The Cronquist system, of 1981, placed the family in order Najadales of subclass Alismatidae in class Liliopsida [=monocotyledons] in division Magnoliophyta [=angiosperms] .

External links

* [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=20267 Ruppiaceae in the "Flora of North America"]
* [http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Tree&id=55436&lvl=3&lin=f&keep=1&srchmode=1&unlock NCBI Taxonomy Browser]
* [http://www.csdl.tamu.edu/FLORA/cgi/gateway_family?fam=Ruppiaceae links at CSDL, Texas]