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Arum Lily

Zantedeschia aethiopica
Full grown clumping form Full grown clumping form Arrow-head shaped leaves. Arrow-head shaped leaves. White spathe and yellow spadix flower. White spathe and yellow spadix flower. Form Form Wavy leaf margins. Wavy leaf margins. Leaves arise from rhizomes. Leaves arise from rhizomes.
8 Cultivars/Varieties

Arum Lily

Arum maculatum
Arum maculatum in flower Arum maculatum in flower Whole plant in bloom Whole plant in bloom Arum maculatum in flower Arum maculatum in flower Arum Maculatum fruit Arum Maculatum fruit Arum Maculatum plant Arum Maculatum plant Botanical Illustration Botanical Illustration

Asa Gray's Sedge

Carex grayi
Clump of grassy foliage Clump of grassy foliage Grassy foliage & an inflorescence of several dense spikes Grassy foliage & an inflorescence of several dense spikes Close-up of the spiky spikes. Close-up of the spiky spikes. Grassy plants with spiky inflorescences. Grassy plants with spiky inflorescences. Grassy plants with spiky inflorescences. Grassy plants with spiky inflorescences.

Ascherson's orchardgrass

Dactylis glomerata
Whole plant in bloom Whole plant in bloom Form Form Flowers Flowers Seedheads Seedheads Flat stems Flat stems Herbarium Sheet Herbarium Sheet
1 Cultivar/Variety

Asclepias

Asclepias lanceolata
Flowers Flowers Form Form Flowers Flowers Plant Plant Fruit Fruit Leaves and stem Leaves and stem

Ascot Rainbow Spurge

Euphorbia x martinii
Close up of flowers Close up of flowers Euphorbia x martinii 'Ascot Rainbow' Euphorbia x martinii 'Ascot Rainbow' Flowers surrounded by colorful bracts. Flowers surrounded by colorful bracts. Leaves Leaves Close up of flowers and bracts. Close up of flowers and bracts. Euphorbia x martini 'Ascot Rainbow' Euphorbia x martini 'Ascot Rainbow'
5 Cultivars/Varieties

Ash

Fraxinus
Detached cluster of fruit and pair of opposite leaves Detached cluster of fruit and pair of opposite leaves Leafy shoot bearing a hanging cluster of winged fruits. Leafy shoot bearing a hanging cluster of winged fruits. Leafy shoot with pinnately compound leaves & winged fruits. Leafy shoot with pinnately compound leaves & winged fruits. Leafy shoot with opposite, pinnately compound leaves. Leafy shoot with opposite, pinnately compound leaves. Tree with round crown and red & orange fall color. Tree with round crown and red & orange fall color.
8 Cultivars/Varieties

Ashe Magnolia

Magnolia ashei
Large solitary many-petaled flower Large solitary many-petaled flower Large solitary many-petaled flower with stamens and carpels. Large solitary many-petaled flower with stamens and carpels. Magnolia ashei Magnolia ashei Large leaves with auriculate bases. Large leaves with auriculate bases.

Ashe's Magnolia

Magnolia ashei
Large solitary many-petaled flower Large solitary many-petaled flower Large solitary many-petaled flower with stamens and carpels. Large solitary many-petaled flower with stamens and carpels. Magnolia ashei Magnolia ashei Large leaves with auriculate bases. Large leaves with auriculate bases.

Ashleaf maple

Acer negundo
Acer negundo Acer negundo Illustration of all the details of this species. Illustration of all the details of this species. Tree trunk (Highland Park, Rochester, NY)-Mid Summer Tree trunk (Highland Park, Rochester, NY)-Mid Summer Compound leaves (Highland Park, Rochester, NY)-Mid Summer Compound leaves (Highland Park, Rochester, NY)-Mid Summer Acer negundo Acer negundo Acer negundo Acer negundo
6 Cultivars/Varieties

Ash-Leaf Maple

Acer negundo
Acer negundo Acer negundo Illustration of all the details of this species. Illustration of all the details of this species. Tree trunk (Highland Park, Rochester, NY)-Mid Summer Tree trunk (Highland Park, Rochester, NY)-Mid Summer Compound leaves (Highland Park, Rochester, NY)-Mid Summer Compound leaves (Highland Park, Rochester, NY)-Mid Summer Acer negundo Acer negundo Acer negundo Acer negundo
6 Cultivars/Varieties

Ashwagandha

Withania somnifera
Fruit Fruit Form Form Flower bud Flower bud Leaf Leaf Flowers and hairy stems. Flowers and hairy stems. Form Form

Ashwagandha, Vedic

Withania somnifera
Fruit Fruit Form Form Flower bud Flower bud Leaf Leaf Flowers and hairy stems. Flowers and hairy stems. Form Form

Ashy Hydrangea

Hydrangea cinerea
Form in June in Grundy County, Tennessee Form in June in Grundy County, Tennessee White flower bunch in June in Grundy County, Tennessee White flower bunch in June in Grundy County, Tennessee Grayish hairs on leaf underside in June. Grundy. Tennessee Grayish hairs on leaf underside in June. Grundy. Tennessee

Asian Bittersweet

Celastrus orbiculatus
Open capsules with red seeds. Open capsules with red seeds. Aging & yellowing leaves and red seeds in open capsules. Aging & yellowing leaves and red seeds in open capsules. Leafy shoot with clusters of green flowers. Leafy shoot with clusters of green flowers. Leafy branch with green axillary flowers. Leafy branch with green axillary flowers. Branch with open capsules displaying red seeds. Branch with open capsules displaying red seeds. Small, dangling green flowers with 5 petals. Small, dangling green flowers with 5 petals.
1 Cultivar/Variety

Asian Bleeding Heart

Lamprocapnos spectabilis
Dicentra spectabilis Dicentra spectabilis Dicentra spectabilis Dicentra spectabilis Dicentra spectabilis Dicentra spectabilis Flower and leaves Flower and leaves 'Alba' Flower 'Alba' Flower Dicentra spectabilis Dicentra spectabilis
2 Cultivars/Varieties

Asian Crab Grass

Digitaria bicornis
Form Form Leaf Leaf Blooms Blooms Stalk and leaf sheath Stalk and leaf sheath Seeds Seeds

Asian Hydrangea

Hydrangea febrifuga
Mature inflorescence with open and unopened flowers. Mature inflorescence with open and unopened flowers. Dichroa febrifuga Dichroa febrifuga Dichroa febrifuga Dichroa febrifuga 'Lady in Blue' flowers 'Lady in Blue' flowers Blue fruits, B.C., Canada Blue fruits, B.C., Canada
1 Cultivar/Variety

Asian Lily

Lilium – Asiatic hybrids
Red, trumpet-shaped flower. Foliage in the background. Red, trumpet-shaped flower. Foliage in the background. Orange flowers on a dwarf plant Orange flowers on a dwarf plant Lilium - Asiatic hybrids Lilium - Asiatic hybrids Orange flowers on a dwarf plant Orange flowers on a dwarf plant Yellow and orange flowers on a potted dwarf plant. Yellow and orange flowers on a potted dwarf plant. Dark red flowers on dwarf plants. Dark red flowers on dwarf plants.
9 Cultivars/Varieties

Asian Pear

Pyrus pyrifolia
Form Form Fruit and leaves Fruit and leaves Flowers Flowers End buds End buds Bark Bark Leaf and stem detail Leaf and stem detail
6 Cultivars/Varieties

Asian Pear

Pyrus pyrifolia 'Niitaka'
Pyrus pyrifolia 'Niitaka' Pyrus pyrifolia 'Niitaka'

Asian Persimmon

Diospyros kaki
leaves leaves leaves leaves leaves leaves leaves leaves leaves leaves Gray bark Gray bark
3 Cultivars/Varieties

Asian Spicebush

Lindera glauca var. salicifolia
Bark Bark Summer leaves Summer leaves

Asian Spiderwort

Murdannia keisak
Flower detail Flower detail Form Form Stem and leaf Stem and leaf Opposite leaves Opposite leaves Stem Stem Rooting from the nodes Rooting from the nodes

Asian Star Jasmine

Trachelospermum asiaticum
Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum 'Goshiki' Trachelospermum asiaticum 'Goshiki' Trachelospermum asiaticum 'Summer Sunset' Trachelospermum asiaticum 'Summer Sunset' Trachelospermum asiaticum Trachelospermum asiaticum
7 Cultivars/Varieties

Asian Stiltgrass

Microstegium vimineum
Form Form Fruits forming (Fairmount Park, Philadelphia, PA)-Mid Fall Fruits forming (Fairmount Park, Philadelphia, PA)-Mid Fall Flowers (Fairmount Park, Philadelphia, PA)-Mid Fall Flowers (Fairmount Park, Philadelphia, PA)-Mid Fall Seeds forming (Fairmount Park, Philadelphia, PA)-Mid Fall Seeds forming (Fairmount Park, Philadelphia, PA)-Mid Fall Leaf attachment and stem (Fairmount Park, Philadelphia, PA)-Mid Leaf attachment and stem (Fairmount Park, Philadelphia, PA)-Mid Leaves Leaves

Asian White Birch

Betula platyphylla var. japonica
Betula platyphylla var. japonica bark Betula platyphylla var. japonica bark Betula platyphylla var. japonica bark Betula platyphylla var. japonica bark Form Form Bark Bark Betula platyphylla var. japonica Betula platyphylla var. japonica Betula platyphylla var. japonica bark Betula platyphylla var. japonica bark

Asian White Birch

Betula populifolia 'Whitespire'
Birch trees with multiple white trunks Birch trees with multiple white trunks Birch trees with multiple white trunks Birch trees with multiple white trunks Birch trees with multiple white trunks Birch trees with multiple white trunks

Asian White Birch

Betula pendula subsp. mandshurica
leaves leaves form form form form trunk trunk flower flower bark bark
1 Cultivar/Variety

Asiatic

Youngia japonica
Youngia japonica (L.) DC. Youngia japonica (L.) DC. Seeds Seeds Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC.

Asiatic Bellflower

Wahlenbergia marginata
Blue flower with white center (Downtown, Greensboro, NC)-Late Wi Blue flower with white center (Downtown, Greensboro, NC)-Late Wi Side view of flower (Downtown, Greensboro, NC)-Late Winter Side view of flower (Downtown, Greensboro, NC)-Late Winter Tiny flower (Downtown, Greensboro, NC)-Late Winter Tiny flower (Downtown, Greensboro, NC)-Late Winter Flower, stem, bud (Downtown, Greensboro, NC)-Late Winter Flower, stem, bud (Downtown, Greensboro, NC)-Late Winter Green stem with a few hairs (Downtown, Greensboro, NC)-Late Wint Green stem with a few hairs (Downtown, Greensboro, NC)-Late Wint Lower leaves (Downtown, Greensboro, NC)-Late Winter Lower leaves (Downtown, Greensboro, NC)-Late Winter

Asiatic Dayflower

Commelina communis
Asiatic dayflower (Commelina communis) Asiatic dayflower (Commelina communis) Commelina communis Commelina communis Commelina communis Commelina communis Commelina communis Asiatic Dayflower Commelina communis Asiatic Dayflower Commelina-communis Commelina-communis flower flower

Asiatic Hawksbeard

Youngia japonica
Youngia japonica (L.) DC. Youngia japonica (L.) DC. Seeds Seeds Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC. Youngia japonica (L.) DC.

Asiatic Hybrid Lilies

Lilium – Asiatic hybrids
Red, trumpet-shaped flower. Foliage in the background. Red, trumpet-shaped flower. Foliage in the background. Orange flowers on a dwarf plant Orange flowers on a dwarf plant Lilium - Asiatic hybrids Lilium - Asiatic hybrids Orange flowers on a dwarf plant Orange flowers on a dwarf plant Yellow and orange flowers on a potted dwarf plant. Yellow and orange flowers on a potted dwarf plant. Dark red flowers on dwarf plants. Dark red flowers on dwarf plants.
9 Cultivars/Varieties

Asiatic Jasmine

Trachelospermum asiaticum
Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum Trachelospermum asiaticum 'Goshiki' Trachelospermum asiaticum 'Goshiki' Trachelospermum asiaticum 'Summer Sunset' Trachelospermum asiaticum 'Summer Sunset' Trachelospermum asiaticum Trachelospermum asiaticum
7 Cultivars/Varieties

Asiatic Knotweed

Reynoutria japonica
Plant in bloom Plant in bloom Form Form Leaves Leaves Alternate leaves Alternate leaves Flowers Flowers New fruits, white color. New fruits, white color.
1 Cultivar/Variety

Asiatic Lilies

Lilium – Asiatic hybrids
Red, trumpet-shaped flower. Foliage in the background. Red, trumpet-shaped flower. Foliage in the background. Orange flowers on a dwarf plant Orange flowers on a dwarf plant Lilium - Asiatic hybrids Lilium - Asiatic hybrids Orange flowers on a dwarf plant Orange flowers on a dwarf plant Yellow and orange flowers on a potted dwarf plant. Yellow and orange flowers on a potted dwarf plant. Dark red flowers on dwarf plants. Dark red flowers on dwarf plants.
9 Cultivars/Varieties

Asiatic Lily

Lilium – Asiatic hybrids
Red, trumpet-shaped flower. Foliage in the background. Red, trumpet-shaped flower. Foliage in the background. Orange flowers on a dwarf plant Orange flowers on a dwarf plant Lilium - Asiatic hybrids Lilium - Asiatic hybrids Orange flowers on a dwarf plant Orange flowers on a dwarf plant Yellow and orange flowers on a potted dwarf plant. Yellow and orange flowers on a potted dwarf plant. Dark red flowers on dwarf plants. Dark red flowers on dwarf plants.
9 Cultivars/Varieties

Asiatic pennywort

Centella asiatica
Form Form Form with Stolons Form with Stolons Form en masse Form en masse Flower Closeup Flower Closeup Leaf closeup in November in Durham, North Carolina Leaf closeup in November in Durham, North Carolina

Asiatic Smartweed

Persicaria perfoliata
Stem and Leaves Stem and Leaves Leaf Leaf Form Form Form Form Form Form Leaves and Fruit Leaves and Fruit

Asiatic Sweetleaf

Symplocos paniculata
Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata Symplocos paniculata

Asiatic Tearthumb

Persicaria perfoliata
Stem and Leaves Stem and Leaves Leaf Leaf Form Form Form Form Form Form Leaves and Fruit Leaves and Fruit

Asparagus

Asparagus officinalis
Asparagus officinalis Asparagus officinalis Stems Stems Asparagus in raised bed Asparagus in raised bed Stem Stem Fruit Fruit Asparagus Bed Asparagus Bed
3 Cultivars/Varieties

Asparagus

Asparagus densiflorus Sprengeri Group
Asparagus densiflorus Asparagus densiflorus Form Form Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus
4 Cultivars/Varieties

Asparagus Bean

Vigna unguiculata
Dense foliage of trifoliolate leaves and long beans. Dense foliage of trifoliolate leaves and long beans. Bluish purple pea flower Bluish purple pea flower Hand cradling a trifoliolate leaf. Hand cradling a trifoliolate leaf. Flowers and long beans against the foliage of the plant. Flowers and long beans against the foliage of the plant. Close-up of a pinkish purple pea flower Close-up of a pinkish purple pea flower Vine bearing long beans and trifoliolate leaves Vine bearing long beans and trifoliolate leaves

Asparagus Fern

Asparagus setaceus
soft, fine, feathery, lime green needle-like fronds soft, fine, feathery, lime green needle-like fronds Asparagus setaceus in a container Asparagus setaceus in a container Asparagus setaceus habit Asparagus setaceus habit Asparagus setaceus stem Asparagus setaceus stem Asparagus setaceus frond Asparagus setaceus frond

Asparagus Fern

Asparagus densiflorus Sprengeri Group
Asparagus densiflorus Asparagus densiflorus Form Form Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus Asparagus densiflorus
4 Cultivars/Varieties

Aspen Fleabane

Erigeron speciosus
Flower buds in June in Harney County in Oregon Flower buds in June in Harney County in Oregon Form in July in Teton County, Wyoming Form in July in Teton County, Wyoming Form in September in Ward County, Colorado Form in September in Ward County, Colorado Flower closeup in September in Flagstaff, Arizona Flower closeup in September in Flagstaff, Arizona Seedpods in September in Rochester, Washington Seedpods in September in Rochester, Washington