H
H
- Habenaria (From habena a thong or strap)
- Habenaria (SYN Sieberia Flowers spicate)
- Haberlea
- Habranthus (Following plant is classed)
- Habranthus (From habros delicate)
- Hacon's Incomparable
- Hacquetia
- Haemanthus (From haima blood and anthos)
- Haemanthus (To the species described on p)
- Haemaria (From haima blood in reference)
- Haemaria (Sepals equal free the dorsal)
- Haematoxylon
- Haemodoraceae
- Haemodorum
- Hakea (Named after Baron Hake)
- Hakea (To the species described on p)
- Halesia
- Halimodendron
- Halleria
- Hallia
- Halorageae
- Hamamelideae
- Hamamelis
- Hamelia
- Hamiltonia
- Hand Glasses
- Hand-Weeding
- Haplocarpha
- Haplopappus
- Hardenbergia
- Hardening-Off
- Hardwickia
- Hardy Perennial Garden
- Hardy Plants
- Haronga
- Harpagophytum
- Hartogia
- Hartwegia
- Haworthia
- Hawthorn Caterpillars
- Heating
- Hebburn Prolific
- Hebecladus
- Hebenstretia
- Hechtia
- Hedera (Old Latin name for the Ivy)
- Hedera (To the varieties of H Helix)
- Hedges
- Hedwigia
- Hedychium (Flowers disposed in a terminal)
- Hedychium (From hedys sweet and chion)
- Hedysarum (Hedysaron the Greek name used)
- Hedysarum (To the species described on p)
- Hedyscepe
- Heel
- Heeria
- Heinsia
- Heisteria
- Helenium (Helenion an old Greek name)
- Helenium (To the species described on p)
- Heliamphora
- Helianthus
- Heliconia
- Helicophyllum
- Heliophila
- Heliotropium
- Helmholtzia
- Helmia
- Helminthostachys
- Helonias
- Heloniopsis
- Helwingia
- Hemerocallis (Old Greek name used)
- Hemerocallis (This genus embraces five)
- Hemiandra
- Hemichaena
- Hemigraphis
- Hemimeris
- Hemionitis
- Hemiphragma
- Hemipilia
- Hemitelia
- Henson's Seedling – Hypolepis Spectabilis
- Heptapleurum (From hepta seven and pleuron)
- Heptapleurum (To the species described on p)
- Heracleum
- Herbertia
- Herbs
- Heritiera
- Hermannia
- Herminiera
- Herminium
- Hero of the Nile
- Herpestis
- Herrania
- Herreria
- Hesperaloe
- Hesperantha
- Hesperis
- Hesperocallis
- Hessea
- Heteranthera
- Heteropappus
- Heteropterys
- Heterospathe
- Heterotheca
- Heterotoma
- Heterotropa
- Heuchera
- Hevea
- Hexaglottis
- Hexisia
- Hibbertia
- Hibiscus (Calyx five-cleft)
- Hibiscus (Old Greek name for the Marsh)
- Hieracium (Greek name used by Dioscorides)
- Hieracium (To the species described on p)
- Hierochloe
- Hillebrandia
- Hillia
- Himalaya
- Hindsia
- Hippeastrum
- Hippia
- Hippobromus
- Hippocrepis
- Hippomane
- Hippophae
- Hippuris
- Hodgsonia
- HOES and HOEING
- Hoffmannia
- Hogg's Red Gean
- Holbcellia
- Holcus
- Holly-Leaf Fly
- Hollyhock (Althaea rosea The Hollyhock)
- Hollyhock (New Hollyhocks have been)
- Hollyhock Fungus
- Holmskioldia
- Homalanthus
- Homalomena (Flowers borne)
- Homalomena (From homalos flat and nema)
- Homeria
- Homogyne
- Hon
- Honey Bee
- Honeydew
- Hoodia
- Hordeum
- Horehound
- Horminum
- Horse-Dung
- Horse-Radish
- Horsfieldia
- Hosackia
- Hotbeds
- Hottonia
- Houlletia (Named after M Houllet a French)
- Houlletia (To the species described on pp)
- Houstonia
- Houttea
- Houttuynia
- Hovea
- Hovenia
- Howea
- Hoya (Named after Thomas Hoy once)
- Hoya (To the species described on pp)
- Hubbard Squash
- Hudsonia
- Huernia (Named after Justus Huernius)
- Huernia (To the species described on p)
- Humble Bee
- Humea
- Humulus (From humus the ground plant)
- Humulus (SYN Lupulus Flowers diaecious)
- Humus
- Hunnemannia
- Hura
- Hutchinsia
- Huyshe's Bergamot
- Hyacinthus
- Hybernia
- Hybridising
- Hydnum
- Hydrangea
- Hydrastis
- Hydriastele
- Hydrocharideae
- Hydrolea
- Hydropeltis
- Hydrophyllaceae
- Hydrophyllum
- Hygrometer
- Hymenaea
- Hymenanthera
- Hymenocallis (From hymen a membrane)
- Hymenocallis (To the species described on pp)
- Hymenodictyon
- Hymenophyllum
- Hymenoptera
- Hymenosporum
- Hyophorbe
- Hyoscyamus
- Hyospathe
- Hypecoum
- Hypericineae
- Hypericum (Old Greek name used)
- Hypericum (To the species described on pp)
- Hyphaene
- Hypocalymma
- Hypocyrta
- Hypoderris
- Hypoestes
- Hypolepis
- Hypolytrum
- Hypoxis (From hypo beneath somewhat)
- Hypoxis (This genus fifty-one species)
- Hyssop