Gymnocladus dioicus

Gymnocladus dioicus

Kentucky Coffee Tree, Kentucky Coffeetree

Halesia diptera

Halesia diptera

Two-wing Silverbell, Two-winged Silverbell

Halesia carolina

Halesia tetraptera monticola

var. monticola

Mountain Silverbell, Mountain Snow Drop

Helleborus abchasicus

Helleborus abchasicus

Lenten Rose

Helleborus orientalis

Helleborus orientalis

Hellebore, Lenten-rose

Hesperocyparis bakeri

Hesperocyparis bakeri

Baker's Cypress, Modoc Cypress, Siskiyou Cypress

Hibiscus cannabinus

Hibiscus cannabinus

Brown Indianhemp, Kenaf

Hosta venusta

Hosta venusta

Plantain Lily

Hydrangea paniculata

Hydrangea paniculata Grandiflora

'Grandiflora'

Pee Gee Hydrangea

Hydrastis canadensis

Hydrastis canadensis

Golden Seal, Goldenseal

Hypericum calycinum

Hypericum calycinum

Aaron's Beard, Creeping St. Johnswort, Goldflower, Rose-of-Sharonwort

Hypericum patulum

Hypericum patulum

Goldencup St. Johnswort

Iberis sempervirens

Iberis sempervirens

Evergreen Candytuft

Ilex glabra

Ilex glabra

Appalachian Tea, Dye-leaves, Evergreen Winterberry, Gallberry, Ink Berry

Ilex longipes

Ilex longipes

Chapman's Holly, Georgia Holly

Ilex montana

Ilex montana

Mountain Holly, Mountain Winterberry

Ilex opaca

Ilex opaca northern

Northern

American Holly, Northern American Holly

Ilex serrata

Ilex serrata

Finetooth Holly

Imperata cylindrica

Imperata cylindrica

Cogongrass

Iris crocea

Iris crocea

German Iris, Golden Flag

Iris douglasiana

Iris douglasiana

Douglas Iris

Iris germanica

Iris germanica

Bearded Iris, German Iris

Iris pseudacorus

Iris pseudacorus

Pale Yellow Iris, Yellow Flag

Jamesia americana

Jamesia americana

Fivepetal Cliffbush, Waxflower

Juglans ailantifolia

Juglans ailantifolia

Japanese Walnut

Juglans californica

Juglans californica

California Black Walnut, California Walnut, Southern California Walnut

Juglans cinerea

Juglans cinerea

Butternut

Juglans cinerea - Canker Resistant Selection

Juglans cinerea - canker resistant selection

Butternut

Juglans major

Juglans major

Arizona Walnut

Juglans mandshurica

Juglans mandshurica

Manchurian Walnut

Juglans microcarpa

Juglans microcarpa

Little Walnut

Juglans regia

Juglans regia

English Walnut, Persian Walnut

Juncus effusus

Juncus effusus

Bog Rush, Common Rush, Needle Rush, Needlerush, Soft Rush

Juniperus deppeana

Juniperus deppeana

Alligator Juniper, Checkerbark Juniper

Juniperus horizontalis

Juniperus horizontalis

Creeping Juniper

Juniperus virginiana

Juniperus virginiana eastern eco-type

eastern eco-type

Eastern Red Cedar, Eastern Redcedar

Kalopanax septemlobus

Kalopanax septemlobus

Castor Aralia

Kerria japonica

Kerria japonica

Japanese Kerria, Japanese Rose

Keteleeria davidiana

Keteleeria davidiana

David's Keteleeria

Keteleeria evelyniana

Keteleeria evelyniana

Evelyn Keteleeria, Yunnan Youshan

Keteleeria fortunei

Keteleeria fortunei

Fortune's Keteleeria

Larix laricina

Larix laricina

American Larch, Eastern Larch, Tamarack

Larix lyallii

Larix lyallii

Subalpine Larch

Larix sibirica

Larix sibirica

Siberian Larch

Lathyrus tuberosus

Lathyrus tuberosus

Tuberous Sweetpea

Laurus nobilis

Laurus nobilis

Bay, Bay Laurel, Bay Leaf, Grecian Laurel, Laurel, Sweet Bay, True Laurel

Lavatera thuringiaca

Lavatera thuringiaca

Gay Mallow, Tree Lavatera, Tree Mallow

Leitneria floridana

Leitneria floridana

Corkwood

Leonotis nepetifolia

Leonotis nepetifolia

Lion's Ear

Lespedeza juncea

Lespedeza juncea var. sericea

var. sericea

Chinese Bush Clover, Chinese Lespedeza, Sericea , Sericea Lespedeza, Silky Bush Clover