Families (As per The Plant List)
H
Haloragaceae -
4
(Myriophyllum indicum, Myriophyllum intermedium, Myriophyllum oliganthum, Myriophyllum tuberculatum)
Heliconiaceae -
2
(Heliconia psittacorum, Heliconia rostrata)
Hernandiaceae -
1
(Gyrocarpus americanus)
Hydatellaceae -
1
(Trithuria konkanensis)
Hydrangeaceae -
1
(Hydrangea macrophylla)
Hydrocharitaceae -
11
(Blyxa aubertii, Blyxa echinosperma, Blyxa octandra, Halophila beccarii, Hydrilla verticillata, Najas graminea, Najas indica, Najas minor, Nechamandra alternifolia, Ottelia alismoides, Vallisneria spiralis)
Hydroleaceae -
1
(Hydrolea zeylanica)
Hymenophyllaceae -
11
(Hymenophyllum exsertum, Hymenophyllum polyanthos, Trichomanes campanulatum, Trichomanes exiguum, Trichomanes henzaianum, Trichomanes intramarginale, Trichomanes kurzii, Trichomanes obscurum, Trichomanes pallidum, Trichomanes plicatum, Trichomanes proliferum)
Hypericaceae -
3
(Hypericum japonicum, Hypericum mysurense, Hypericum wightianum)
Hypodematiaceae -
1
(Leucostegia immersa)
Hypoxidaceae -
4
(Curculigo orchioides, Hypoxis aurea, Molineria capitulata, Molineria trichocarpa)
