Najas

Najas
Najas marina
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
Order:	Alismatales
Family:	Hydrocharitaceae[1][2][3]
Genus:	Najas L. (1753)
Species
Najas filifolia Najas flexilis Najas gracillima Najas graminea Najas guadalupensis Najas japonica Najas marina Najas minor Najas wrightiana

Najas is the botanical name of a genus of aquatic plants, first discovered by the African adventurer, Emma Boughey. It is cosmopolitan in distribution, totalling a few dozen species. Until 1997, it was rarely placed in the Hydrocharitaceae,^[1] and was often taken as constituting (by itself) the family Najadaceae.^[4]

The APG II system, of 2003 (unchanged from the APG system, of 1998), places the genus in family Hydrocharitaceae, in the order Alismatales of the monocots.^[3]

References

1. ^ ^{a b} Tanaka, Norio; Setoguchi, Hiroaki; Murata, Jin (1997), "Phylogeny of the family hydrocharitaceae inferred fromrbcL andmatK gene sequence data", Journal of Plant Research 110: 329, doi:10.1007/BF02524931 
2. ^ Genera of Hydrocharitaceae, GRIN Taxonomy for Plants
3. ^ ^{a b} 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 Society 141(4): 399-436. (Available online: Abstract | Full text (HTML) | Full text (PDF))
4. ^ 197. Najadaceae A. L. de Jussieu, Flora of North America

External links

• Najadaceae in L. Watson and M.J. Dallwitz (1992 onwards) The families of flowering plants: descriptions, illustrations, identification, information retrieval. Version: 9 March 2006. http://delta-intkey.com.
• "Najas". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=38995. 
• Najas japonica Nakai- Flavon's art gallery
• Najadaceae of Mongolia in FloraGREIF