Plant Database (by name)

Hawai'i vetch - Vicia menziesii Spreng.

hawk's eye - Euryops multifidus (Thunb.) DC.

hawkweed - Hieracium L.

hawkweed oxtongue - Picris hieracioides L.

Haworth's aeonium - Aeonium haworthii Webb & Berth.

hawthorn - Crataegus L.

Hayden's Indian paintbrush - Castilleja haydenii (Gray) Cockerell

Hayden's sedge - Carex haydenii Dewey

hayfield tarweed - Hemizonia congesta DC. ssp. luzulifolia (DC.) Babcock & Hall

hazel alder - Alnus serrulata (Ait.) Willd.

hazel dodder - Cuscuta coryli Engelm.

hazelnut - Corylus L.

heartleaf arnica - Arnica cordifolia Hook.

heartleaf bittercress - Cardamine cordifolia Gray

heartleaf buttercup - Ranunculus cardiophyllus Hook.

heartleaf foamflower - Tiarella cordifolia L.

heartleaf four o'clock - Mirabilis nyctaginea (Michx.) MacM.

heartleaf hedgenettle - Stachys cordata Riddell

heartleaf keckiella - Keckiella cordifolia (Benth.) Straw

heartleaf milkweed - Asclepias cordifolia (Benth.) Jepson

heartleaf nettle - Urtica chamaedryoides Pursh

heartleaf noseburn - Tragia cordata Michx.

heartleaf peppervine - Ampelopsis cordata Michx.

heartleaf plantain - Plantago cordata Lam.

heartleaf skullcap - Scutellaria ovata Hill ssp. ovata

heartleaf suncup - Camissonia cardiophylla (Torr.) Raven

heartleaf twayblade - Listera cordata (L.) R. Br. ex Ait. f. var. cordata

heartleaf twistflower - Streptanthus cordatus Nutt.

heartleaf willow - Salix cordata Michx.

hearts entangled - Ceropegia woodii Schltr.

heartshape false pickerelweed - Monochoria vaginalis (Burm. f.) K. Presl ex Kunth

heartwing sorrel - Rumex hastatulus Baldw.

heath - Erica diaphana Spreng.

heath sedge - Carex flacca Schreb.

heath-leaf banksia - Banksia ericifolia L. f.

heather - Calluna vulgaris (L.) Hull

heavenlyblue morning-glory - Ipomoea violacea L.

heavy sedge - Carex gravida Bailey

Heckner's lewisia - Lewisia cotyledon (S. Wats.) B.L. Robins. var. heckneri (Morton) Munz

hedge bamboo - Bambusa ?multiplex (Lour.) Raeusch. ex J.A. & J.H. Schultes

hedge false bindweed - Calystegia sepium (L.) R. Br.

hedge false bindweed - Calystegia sepium (L.) R. Br. ssp. angulata Brummitt

hedge false bindweed - Calystegia sepium (L.) R. Br. ssp. sepium

hedge maple - Acer campestre L.

hedgehog cactus - Echinocereus Engelm.

hedgemustard - Sisymbrium officinale (L.) Scop.

Heermann's buckwheat - Eriogonum heermannii Dur. & Hilg. var. humilius (S. Stokes) Reveal

Heermann's buckwheat - Eriogonum heermannii Dur. & Hilg. var. subracemosum (S. Stokes) Reveal

Heermann's tarweed - Holocarpha heermannii (Greene) Keck

heliotrope - Heliotropium L.