Hydrocharitaceae
Hydrocharitaceae Juss., Gen. Pl. 67. 1789. nom. cons. 'Tape Grass Family'
Characteristic Features:
Fresh water or marine aquatic herbs
Leaves submerged, usually ribbon like
Flowers subtended by paired bracts, male flowers detaching and floating on water surface
Gynoecium syncarpous, ovary inferior, bearing many scattered ovules
Fruit is capsule or berry
Diversity:
World- 16 genera 133 species (The Plant List 2013); 16 genera, 135 species (Christenhusz & Byng 2016); 17 genera, 150 species (Mabberely 2017); 16 genera, 133 species (Roskov et al. 2021)
India - 9 genera 18 species (Karthikeyan 2000); 9 genera, 21 species (BSI, 2021)
Indian Himalaya- 6 genera, 9 species (Singh et al. 2019)
Uttarakhand - 5 genera 6 species (Uniyal et al. 2007)
General Characters:
Hydrocharitaceae in POWO 2021 (Plants of the World Online)
Hydrocharitaceae in Wikipedia
Systematic Position of the Family in Different Systems of Classifications:
Systematic position in 2-Superkingdom, 7-Kingdom classification of Ruggiero et al. (2015)
Super Kingdom- Eukaryota, Kingdom- Plantae, Subkingdom- Viridiplantae, Infrakingdom- Streptophyta, Superphylum- Embryophyta, Phylum- Tracheophyta, Subphylum- Spermatophytina, Superclass- Angiospermae, Class- Magnoliopsida, Superorder- Lilianae, Order- Alismatales
Bentham & Hooker (1862-83)
Class : Monocotyledons
Series : Microspermae
Engler & Prantl (1887-1915)
Kingdom : Plantae
Division : Embryophyta Siphonogama
Subdivision: Angiospermae
Class : Monocotyledoneae
Order : Halobiae
Hutchinson (1973)
Phylum : Angiospermae
Subphylum: Monocotyledones
Division : Calycifear
Order : Butomales
Cronquist (1988)
Division : Magnoliophyta
Class : Liliopsida
Subclass : Alismatidae
Order : Hydrocharitales
Thorne & Reveal (2007)
Class : Magnoliopsida
Subclass : Alismatidae
Super Order: Alismatanae
Order : Alismatales
Takhtajan (2009)
Phylum : Magnoliophyta
Class : Liliopsida
Subclass : Alismatidae
Super Order: Alismatanae
Order : Hydrocharitales
Reveal (2012)
Class : Equisetopsida
Subclass : Magnoliidae
Super Order: Lilianae
Order : Alismatales
APG-IV (2016)
Clade : Angiosperms
Clade : Monocots
Order : Alismatales
Shipunov (2020)
Class : Angiospermae
Subclass : Liliidae
Order : Alismatales
Suborder: Alismatineae
Genera and Species in Pantnagar
To see larger image please click on the name
~~~Wild Flora~~~
Hydrilla verticillata (L.f.) Royle