Haloragaceae - Watermilfoil Family - Genera:1; Species:2; (Myriophyllum spicatum, Myriophyllum tuberculatum) Hamamelidaceae - Hamamile Family - Genera:1; Species:1; Family Photo Gallery (Corylopsis himalayana) Hippocastanaceae - Horse-Chestnut Family - Genera:1; Species:1; Family Photo Gallery (Aesculus assamica) Hippuridaceae - Genera:1; Species:1; (Hippuris vulgaris) Hydrangeaceae - Hydrangea Family - Genera:4; Species:10; Family Photo Gallery (Deutzia compacta, Deutzia macrantha, Deutzia staminea, Dichroa febrifuga, Hydrangea aspera, Hydrangea aspera subsp. robusta, Hydrangea heteromalla, Hydrangea hortensis, Hydrangea macrophylla, Philadelphus tomentosus) Hydroleaceae - Waterleaf Family - Genera:2; Species:2; (Hydrolea zeylanica, wigandia kunthii) Hypericaceae - Hypericum Family - Genera:1; Species:8; Family Photo Gallery (Hypericum choisianum, Hypericum dyeri, Hypericum elodeoides, Hypericum himalaicum, Hypericum monanthemum, Hypericum oblongifolium, Hypericum perforatum, Hypericum podocarpoides)
