Explore 62,425 Species
Hayfield Tarweed
Hemizonia congesta DC.
Hemizonia congesta DC. is an aromatic glandular annual tarweed native to Califor…
sharp-lobed hepatica
Hepatica acutiloba DC.
Sharp-lobed hepatica (Hepatica acutiloba) is a clumping spring-blooming buttercu…
round-lobed hepatica
Hepatica americana (DC.) Ker Gawl.
Hepatica americana, the round-lobed hepatica, is a herbaceous flowering buttercu…
Liverleaf
Hepatica nobilis Schreb.
Hepatica nobilis Schreb. is a small perennial herb that has received the RHS Awa…
Australian Umbrella Tree
Heptapleurum actinophyllum (Endl.) Lowry & G.M.Plunkett
Heptapleurum actinophyllum is an evergreen rainforest tree grown ornamentally th…
Miniature umbrella tree
Heptapleurum arboricola Hayata
Heptapleurum arboricola is an evergreen shrub native to Taiwan, widely grown as …
Ivy Tree
Heptapleurum heptaphyllum (L.) Y.F.Deng
Heptapleurum heptaphyllum is an Araliaceae flowering plant native to East and So…
Taiwan Umbrella Tree
Heptapleurum taiwanianum (Nakai) G.M.Plunkett & Lowry
Heptapleurum taiwanianum is a Taiwanese evergreen ornamental flowering plant in …
Austrian Hogweed
Heracleum austriacum L.
Heracleum austriacum L. is a 0.28-meter tall perennial flowering plant first for…
dissected hogweed
Heracleum dissectum Ledeb.
Heracleum dissectum Ledeb. is a flowering Apiaceae species found across temperat…
Giant Hogweed
Heracleum mantegazzianum Sommier & Levier
Heracleum mantegazzianum, or giant hogweed, is a large monocarpic invasive peren…
common cowparsnip
Heracleum maximum W.Bartram
Heracleum maximum, or cow parsnip, is a tall North American perennial herb with …
Sosnowsky's hogweed
Heracleum sosnowskyi Manden.
Sosnowsky's hogweed is a large monocarpic perennial that dies after producing it…
common cowparsnip
Heracleum sphondylium L.
Heracleum sphondylium, common hogweed, is a herbaceous perennial flowering plant…
curly herissantia
Herissantia crispa (L.) Brizicky
Herissantia crispa is a mallow family flowering plant native to tropical America…
Looking-glass mangrove
Heritiera littoralis Dryand. ex Aiton
Heritiera littoralis Dryand. ex Aiton is an evergreen mangrove-edge tree harvest…
Musk Orchid
Herminium monorchis (L.) R.Br.
Herminium monorchis, the musk orchid, is a common orchid widespread across much …
Lantern Tree
Hernandia nymphaeifolia (C.Presl) Kubitzki
Hernandia nymphaeifolia is a tropical coastal tree with documented uses across P…
Smooth Rupturewort
Herniaria glabra L.
Smooth rupturewort (Herniaria glabra L.) is a Caryophyllaceae plant growing in N…
hairy rupturewort
Herniaria hirsuta L.
Herniaria hirsuta, or hairy rupturewort, is a prostrate annual herb used as an h…
Scarlet River Lily
Hesperantha coccinea (Backh. & Harv.) Goldblatt & J.C.Manning
Hesperantha coccinea is a red-flowered Iridaceae perennial native to southern Af…
slimleaf plains-mustard
Hesperidanthus linearifolius (A.Gray) Rydb.
Hesperidanthus linearifolius is a perennial mustard herb with purple flowers, na…
dame's rocket
Hesperis matronalis L.
Hesperis matronalis, also called dame's rocket, is an often-biennial flowering p…
desert lily
Hesperocallis undulata A.Gray
Hesperocallis undulata, the desert lily, is a North American desert bulb with wh…
