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Halophila johnsonii Eiseman


Family Name: Hydrocharitaceae Juss. - Tape-grass family

Common Name: Johnson"s seagrass

Date Modified: Feb. 7, 2026, 3:53 a.m.

Halophila minor (Zoll.) Hartog


Family Name: Hydrocharitaceae Juss. - Tape-grass family

Common Name: seagrass

Date Modified: Feb. 7, 2026, 3:53 a.m.

Haloragis erecta (Murray) Eichler


Family Name: Haloragaceae R. Br. - Water Milfoil family

Common Name: erect seaberry

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hamamelis ovalis S.W. Leonard


Family Name: Hamamelidaceae R. Br. - Witch-hazel family

Common Name: Leonard"s witch hazel

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hamamelis vernalis Sarg.


Family Name: Hamamelidaceae R. Br. - Witch-hazel family

Common Name: Ozark witchhazel

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hamamelis virginiana L.


Family Name: Hamamelidaceae R. Br. - Witch-hazel family

Common Name: American witchhazel

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hamelia axillaris Sw.


Family Name: Rubiaceae Juss. - Madder family

Common Name: balsamillo

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hamelia patens Jacq.


Family Name: Rubiaceae Juss. - Madder family

Common Name: scarletbush

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hammarbya paludosa (L.) Kuntze


Family Name: Orchidaceae Juss. - Orchid family

Common Name: bog adder"s-mouth orchid

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hapalorchis lineatus (Lindl.) Schltr.


Family Name: Orchidaceae Juss. - Orchid family

Common Name: tropical ladies"-tresses

Date Modified: Feb. 7, 2026, 3:53 a.m.

Harperella fluviatilis Rose


Family Name: Apiaceae Lindl. - Carrot family

Common Name: piedmont mock bishopweed

Date Modified: Feb. 7, 2026, 3:53 a.m.

Harperella nodosa Rose


Family Name: Apiaceae Lindl. - Carrot family

Common Name: piedmont mock bishopweed

Date Modified: Feb. 7, 2026, 3:53 a.m.

Harperella vivipara Rose


Family Name: Apiaceae Lindl. - Carrot family

Common Name: piedmont mock bishopweed

Date Modified: Feb. 7, 2026, 3:53 a.m.

Harperocallis flava McDaniel


Family Name: Liliaceae Juss. - Lily family

Common Name: Harper"s beauty

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Harrimanella stelleriana (Pall.) Coville


Family Name: Ericaceae Juss. - Heath family

Common Name: Alaska bellheather

Date Modified: Feb. 7, 2026, 3:53 a.m.

Harrisia aboriginum Small


Family Name: Cactaceae Juss. - Cactus family

Common Name: prickly applecactus

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Harrisia simpsonii Small


Family Name: Cactaceae Juss. - Cactus family

Common Name: Simpson"s applecactus

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hartwrightia floridana A. Gray ex S. Watson


Family Name: Asteraceae Bercht. & J. Presl - Aster family

Common Name: Florida hartwrightia

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hasteola suaveolens (L.) Pojark.


Family Name: Asteraceae Bercht. & J. Presl - Aster family

Common Name: false Indian plantain

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hastingsia alba (Durand) S. Watson


Family Name: Liliaceae Juss. - Lily family

Common Name: white rushlily

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hastingsia bracteosa S. Watson


Family Name: Liliaceae Juss. - Lily family

Common Name: largeflower rushlily

Date Modified: Feb. 7, 2026, 3:53 a.m.

Hebeclinium macrophyllum (L.) DC.


Family Name: Asteraceae Bercht. & J. Presl - Aster family

Common Name: largeleaf thoroughwort

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hedera helix L.


Family Name: Araliaceae Juss. - Ginseng family

Common Name: English ivy

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hedychium coronarium J. Koenig


Family Name: Zingiberaceae Martinov - Ginger family

Common Name: white garland-lily

Date Modified: Feb. 7, 2026, 3:53 a.m.

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Hedychium flavescens Carey ex Roscoe


Family Name: Zingiberaceae Martinov - Ginger family

Common Name: cream garland-lily

Date Modified: Feb. 7, 2026, 3:53 a.m.