Genera: A B C D E F G H I J K L M N O P Q-R S T U V W X-Y-Z
Families: A B C D E F G H I J L M N O P R S T U V W-X-Z
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Families - H
Haemodoraceae
Haloragaceae
Hamamelidaceae
Heliotropiaceae
Hippocastanaceae (see Sapindaceae)
Hippuridaceae (see Plantaginaceae)
Hydrangeaceae
Hydrocaryaceae (see Lythraceae)
Hydrocharitaceae
Hydrophyllaceae
Hymenophyllaceae
Hypericaceae
Hypoxidaceae
HAEMODORACEAE (Bloodwort Family)
LachnanthesHALORAGACEAE (Water Milfoil Family)
MyriophyllumProserpinaca
HAMAMELIDACEAE (Witch-hazel Family)
HamamelisHELIOTROPIACEAE (Heliotrope Family)
HeliotropiumHYDRANGEACEAE (Hydrangea Family)
DeutziaHydrangea
Philadelphus
HYDROCHARITACEAE (Frog's-bit Family)
Anacharis (see Egeria and Elodea)Egeria
Elodea (see also Egeria)
Hydrilla
Hydrocharis
Limnobium
Najas
Vallisneria
HYDROPHYLLACEAE (Waterleaf Family)
EllisiaHydrophyllum
Phacelia
HYMENOPHYLLACEAE (Filmy Fern Family)
CrepidomanesTrichomanes (see Crepidomanes)
HYPERICACEAE (St. John's-wort Family)
Ascyrum (See Hypericum)Hypericum (see also Triadenum)
Triadenum
HYPOXIDACEAE (Stargrass Family)
HypoxisDesigned by Ray Angelo. Revised Jan. 18, 2017