Plant Database (by name)

horsetail - Equisetum L.

horsetail milkweed - Asclepias subverticillata (Gray) Vail

horsetail paspalum - Paspalum fluitans (Ell.) Kunth

hortulan plum - Prunus hortulana Bailey

Houghton's flatsedge - Cyperus houghtonii Torr.

Houghton's goldenrod - Oligoneuron houghtonii (Torr. & Gray ex Gray) Nesom

Houghton's sedge - Carex houghtoniana Torr. ex Dewey

Howard's evening-primrose - Oenothera howardii (A. Nels.) W.L. Wagner

Howe's dicranella moss - Dicranella howei Ren. & Card.

Howell's bentgrass - Agrostis howellii Scribn.

Howell's bluegrass - Poa howellii Vasey & Scribn.

Howell's gumweed - Grindelia howellii Steyermark

Howell's marsh marigold - Caltha leptosepala DC. ssp. howellii (Huth) P.G. Sm.

Howell's pussytoes - Antennaria howellii Greene ssp. neodioica (Greene) Bayer

Howell's reedgrass - Calamagrostis howellii Vasey

Howell's rush - Juncus howellii F.J. Herm.

huckleberry - Gaylussacia Kunth

Hudson Bay sedge - Carex heleonastes L. f.

Hudson's anemone - Anemone multifida Poir. var. hudsoniana DC.

huisache daisy - Amblyolepis setigera DC.

Humboldt Bay owl's-clover - Castilleja ambigua Hook. & Arn. ssp. humboldtiensis (Keck) Chuang & Heckard

Humboldt River milkvetch - Astragalus iodanthus S. Wats. var. iodanthus

Humboldt's lily - Lilium humboldtii Roezl & Leichtl. ex Duchartre

Humboldt's lily - Lilium humboldtii Roezl & Leichtl. ex Duchartre ssp. ocellatum (Kellogg) Thorne

hummingbird sage - Salvia spathacea Greene

hummingbird trumpet - Epilobium canum (Greene) Raven

hummingbird trumpet - Epilobium canum (Greene) Raven ssp. angustifolium (Keck) Raven

hummingbird trumpet - Epilobium canum (Greene) Raven ssp. latifolium (Hook.) Raven

humped bladderwort - Utricularia gibba L.

husk tomato - Physalis pubescens L.

husk tomato - Physalis pubescens L. var. integrifolia (Dunal) Waterfall

husk tomato - Physalis pubescens L. var. pubescens

Hutchins' ulota moss - Ulota hutchinsiae (Sm.) Hammar

hyacinth - Hyacinthus L.

hyacinthbean - Lablab purpureus (L.) Sweet

hyacinthoides - Hyacinthoides Medik.

hybrid false oat - Trisetum orthochaetum A.S. Hitchc.

hygrohypnum moss - Hygrohypnum duriusculum (De Not.) Jamieson

hygrohypnum moss - Hygrohypnum luridum (Hedw.) Jenn.

hygrohypnum moss - Hygrohypnum micans (Mitt.) Broth.

hygrohypnum moss - Hygrohypnum ochraceum (Turn. ex Wils.) Loeske

hylocomiastrum moss - Hylocomiastrum pyrenaicum (Spruce) Fleisch. in Broth.

hylocomiastrum moss - Hylocomiastrum umbratum (Hedw.) Fleisch. in Broth.

hypnum moss - Hypnum callichroum Funck ex Brid.

hypnum moss - Hypnum cupressiforme Hedw.

hypnum moss - Hypnum imponens Hedw.

hypnum moss - Hypnum jutlandicum Holm. & Warncke

hypnum moss - Hypnum mammillatum (Brid.) Loeske

hypnum moss - Hypnum pallescens (Hedw.) P. Beauv.

hyssop - Hyssopus officinalis L.