Plant Database (by name)

helleborine - Epipactis Zinn

Heller's beardtongue - Penstemon triflorus Heller

Heller's bird's-beak - Cordylanthus kingii S. Wats. ssp. helleri (Ferris) Chuang & Heckard

Heller's cudweed - Pseudognaphalium helleri (Britt.) A. Anderb. ssp. helleri

Heller's dwarf lupine - Lupinus lapidicola Heller

Heller's rosette grass - Dichanthelium oligosanthes (J.A. Schultes) Gould var. oligosanthes

Heller's sedge - Carex helleri Mackenzie

hellroot - Orobanche minor Sm.

helmet flower - Scutellaria integrifolia L.

hemlock - Tsuga Carr.

hemlock rosette grass - Dichanthelium sabulorum (Lam.) Gould & C.A. Clark var. patulum (Scribn. & Merr.) Gould & C.A. Clark

hemlock rosette grass - Dichanthelium sabulorum (Lam.) Gould & C.A. Clark var. thinium (A.S. Hitchc. & Chase) Gould & C.A. Clark

hemlock waterparsnip - Sium suave Walt.

hemp broomrape - Orobanche ramosa L.

hen's eyes - Ardisia crenata Sims

henbit deadnettle - Lamium amplexicaule L.

Henderson's angelica - Angelica hendersonii Coult. & Rose

Henderson's bentgrass - Agrostis hendersonii A.S. Hitchc.

Henderson's checkerbloom - Sidalcea hendersonii S. Wats.

Henderson's needlegrass - Achnatherum hendersonii (Vasey) Barkworth

Henderson's triteleia - Triteleia hendersonii Greene var. hendersonii

Henry's lily - Lilium henryi Baker

hepatica - Hepatica nobilis Schreb.

herb of grace - Bacopa monnieri (L.) Pennell

herb of the cross - Verbena officinalis L.

herb sophia - Descurainia sophia (L.) Webb ex Prantl

herbaceous penstemon - Penstemon rydbergii A. Nels. var. oreocharis (Greene) N. Holmgren

herbaceous seepweed - Suaeda maritima (L.) Dumort. ssp. maritima

herbwilliam - Ptilimnium capillaceum (Michx.) Raf.

Hercules' club - Zanthoxylum clava-herculis L.

herzogiella moss - Herzogiella striatella (Brid.) Iwats.

Hester's foxtail cactus - Escobaria hesteri (Y. Wright) Buxbaum

heterocladium moss - Heterocladium dimorphum (Brid.) Schimp. in B.S.G.

hickory - Carya Nutt.

hiddenfruit bladderwort - Utricularia geminiscapa Benj.

high mallow - Malva sylvestris L.

high northern buttercup - Ranunculus hyperboreus Rottb.

highbush blueberry - Vaccinium corymbosum L.

highland doghobble - Leucothoe fontanesiana (Steud.) Sleumer

highland rush - Juncus trifidus L.

Hill's lupine - Lupinus hillii Greene

Hill's pondweed - Potamogeton hillii Morong

Hill's thistle - Cirsium hillii (Canby) Fern.

Hillman's panicgrass - Panicum hillmanii Chase

Hillman's stinkweed - Cleomella hillmanii A. Nels.

hillside false bindweed - Calystegia subacaulis Hook. & Arn. ssp. episcopalis Brummitt

hillside false bindweed - Calystegia subacaulis Hook. & Arn. ssp. subacaulis

Hilo murainagrass - Ischaemum byrone (Trin.) A.S. Hitchc.

hilograss - Paspalum conjugatum Berg.

Himalayan foothill borinda - Borinda fungosa (T.P. Yi) C.M.A. Stapleton