Hydrostachis

Hydrostachis
Hydrostachis
	; Hydrostachys imbricata
Scientific classification
Domain:	Eukaryotes
Kingdom:	Plants
Kingdom :	Green plants
The Department:	Flowering
Grade:	Dicotyledonous
Order :	Asteranae
Order:	Cornelian
Family:	Hydrostachyaceae ( Hydrostachyaceae )
Gender:	Hydrostachis
International scientific name
	Hydrostachys G. Forst.
Kinds
	See text

Hydrostachis ( lat. Hydrostachys ) is a genus of flowering plants , the only one in the Hydrostachiaceae family ( lat. Hydrostachyaceae ). Contains 9 species ^[2] (according to other sources, about 20).

Content

1 Area
2 Botanical Description
3 Taxonomic position
4 Views
5 notes
6 Literature
7 References

Range

It grows in Madagascar , as well as in South and Central Africa .

Botanical Description

All species of this genus are aquatic, grow on rocks in fast-flowing water. They have roots with tubers , usually cirrus leaves and extremely reduced flowers .

Taxonomic position

The phylogenetic position of hydrostachis is very problematic. Due to its specialized structure associated with the aquatic lifestyle, it has always been combined with other aquatic plants, such as the Podostemaceae family ( lat. Podostemaceae ). However, structural features of the flower, the embryo, and other morphological features do not support this position of the genus, and molecular studies have shown that hydrostachis is a relative of plants of the order Kizilotsvetnye ( Latin Cornales ). Its position among cornelian is unclear; it can be a basal taxon of the entire order, or it can be part of the Hortense family ( lat. Hydrangeaceae ). With the rest of the cornel blossoms, it has a few common features. According to the APG III system (2009), it stands out in the independent Hydrostow family.

Views

According to the database of The Plant List (as of July 2016), the genus includes 19 species ^[3] :

Hydrostachys angustisecta Engl.
Hydrostachys decaryi H. Perrier
Hydrostachys distichophylla A.Juss.
Hydrostachys fimbriata C. Cusset
Hydrostachys imbricata A.Juss.
Hydrostachys insignis Mildbr. & Reimers
Hydrostachys laciniata Warm.
Hydrostachys longifida H. Perrier
Hydrostachys madagascariensis Steud.
Hydrostachys maxima H. Perrier
Hydrostachys monoica H. Perrier
Hydrostachys multifida A.Juss.
Hydrostachys perrieri C. Cusset
Hydrostachys plumosa A.Juss. ex tul.
Hydrostachys polymorpha Klotzsch
Hydrostachys stolonifera baker
Hydrostachys triaxialis Engl. & Gilg
Hydrostachys trifaria H. Perrier
Hydrostachys verruculosa A.Juss.

Notes

↑ For the conventionality of specifying the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .
↑ Information from The Plant List
↑ Hydrostachys . The Plant List . Version 1.1. (2013). Date of treatment July 27, 2016.

Literature

Albach, DC, Soltis, DE, Chase, MW, and Soltis, PS (2001). Phylogenetic placement of the enigmatic angiosperm Hydrostachys . Taxon 50, 781-805.
Fan, CZ, and Xiang, QY (2003). Phylogenetic analyses of Cornales based on 26S rRNA and combined 26S rDNA-matK-rbcL sequence data. American Journal of Botany 90 , 1357-1372.
Kubitzki, K. (2004). Cornaceae. In The Families and Genera of Vascular Plants Volume 6: Flowering Plants: Dicotyledons: Celastrales, Oxidales, Rosales, Cornales, Ericales (Kubitzki, ed.). Springer-Verlag, New York.

Links

Hydrostachys at eFloras.org

[1] For the conventionality of specifying the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .

[2] Information from The Plant List

[TPL-3] Hydrostachys . The Plant List . Version 1.1. (2013). Date of treatment July 27, 2016.