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Thorny Locust

Gleditsia triacanthos
Gleditsia triacanthos Gleditsia triacanthos Gleditsia triacanthos Gleditsia triacanthos Thorns are the reason this does not make a good landscape tree. Thorns are the reason this does not make a good landscape tree. Gleditsia triacanthos Gleditsia triacanthos Gleditsia triacanthos 'Sunburst' Gleditsia triacanthos 'Sunburst' Fall Color Tree Fall Color Tree
6 Cultivars/Varieties

Thorny Olive

Elaeagnus pungens
Form Form Whole plant Whole plant Flowers Flowers Eleagnus pungens Eleagnus pungens Fruit Fruit Whole plant Whole plant
3 Cultivars/Varieties

Thoroughwax

Bupleurum rotundifolium
Flowers Flowers Form Form Leaves Leaves Fruit Fruit
1 Cultivar/Variety

Thorough-wax

Bupleurum rotundifolium
Flowers Flowers Form Form Leaves Leaves Fruit Fruit
1 Cultivar/Variety

Thoroughwort

Eupatorium capillifolium
Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Eupatorium capillifolium Leaves Leaves
1 Cultivar/Variety

Thoroughwort

Eupatorium perfoliatum
Form Form Flowers Flowers Flowers Flowers Eupatorium perfoliatum Eupatorium perfoliatum Stems and leaves Stems and leaves Leaves Leaves

Thoroughwort

Conoclinium greggii
Conoclinium greggii Conoclinium greggii Conoclinium greggii Conoclinium greggii Eupatorium greggii 'Blue Mist' leaves and bloom Eupatorium greggii 'Blue Mist' leaves and bloom Conoclinium greggii Conoclinium greggii
1 Cultivar/Variety

Thorowax

Bupleurum rotundifolium
Flowers Flowers Form Form Leaves Leaves Fruit Fruit
1 Cultivar/Variety

Thousandleaf

Achillea
Achillea millefolium (5 petals of each mini-flower) Achillea millefolium (5 petals of each mini-flower) Achillea spp. Achillea spp. Achillea millefolium (close up of flower) Achillea millefolium (close up of flower) Achillea millefolium flowerhead Achillea millefolium flowerhead Achillea millefolium leaves and flower Achillea millefolium leaves and flower Achillea millefolium white flower Achillea millefolium white flower
5 Cultivars/Varieties

Thousandleaf

Achillea millefolium
White flowers of the species White flowers of the species Achillea millefolium Achillea millefolium Close up of the species leaves Close up of the species leaves Achillea millefolium Achillea millefolium Achillea millefolium Achillea millefolium Achillea millefolium Achillea millefolium
12 Cultivars/Varieties

Threadleaf Blue Star

Amsonia hubrichtii
habit, Wake County, NC habit, Wake County, NC Amsonia hubrechtii Amsonia hubrechtii Amsonia hubrichtii Amsonia hubrichtii Amsonia hubrechtii Amsonia hubrechtii Amsonia hubrechtii Amsonia hubrechtii Amsonia hubrichtii Fall color Amsonia hubrichtii Fall color
2 Cultivars/Varieties

Threadleaf Coreopsis

Anacis verticillata
Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Yellow daisy "flowers," buds and thread-like leaves Yellow daisy "flowers," buds and thread-like leaves Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers. Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers.
6 Cultivars/Varieties

Threadleaf Giant Hyssop

Agastache rupestris
Form Form Form Form With Female Broad-tailed Hummingbird With Female Broad-tailed Hummingbird inflorescence inflorescence Flower Flower Flower close up Flower close up

Threadleaf Maple

Acer palmatum subsp. matsumurae
Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. Dissectum Acer palmatum var. Dissectum Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. dissectum Acer palmatum var. Dissectum Acer palmatum var. Dissectum
11 Cultivars/Varieties

Threadleaf Sundew

Drosera filiformis
leaf leaf plant plant plant plant
2 Cultivars/Varieties

Threadleaf tickseed

Anacis verticillata
Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Yellow daisy "flowers," buds and thread-like leaves Yellow daisy "flowers," buds and thread-like leaves Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers. Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers.
6 Cultivars/Varieties

Thread-leaf Tickseed

Anacis verticillata
Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Yellow daisy "flowers," buds and thread-like leaves Yellow daisy "flowers," buds and thread-like leaves Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers. Lots of yellow daisy "flowers" Lots of yellow daisy "flowers" Head of yellow ray flowers and yellow disk flowers. Head of yellow ray flowers and yellow disk flowers.
6 Cultivars/Varieties

Three-colored Amaranth

Amaranthus tricolor
Amaranthus tricolor Amaranthus tricolor Amaranthus tricolor 'Perfecta' Amaranthus tricolor 'Perfecta' Amaranthus tricolor 'Illuminationn' Amaranthus tricolor 'Illuminationn' Amaranthus tricolor Amaranthus tricolor Amaranthus gangeticus Amaranthus gangeticus
3 Cultivars/Varieties

Three-Flower Maple

Acer triflorum
Acer triflorum Tree Acer triflorum Tree Acer triflorum Acer triflorum Acer triflorum Acer triflorum Acer triflorum Acer triflorum Acer triflorum Acer triflorum Form Form

Three-leaved indian turnip

Arisaema triphyllum
Flower - May 10 - Wake Co., NC Flower - May 10 - Wake Co., NC Arisaema triphyllum Arisaema triphyllum Arisaema triphyllum Arisaema triphyllum Arisaema triphyllum Arisaema triphyllum spring flower, Union County, NC spring flower, Union County, NC spring leaves, Union County, NC spring leaves, Union County, NC
4 Cultivars/Varieties

Three Leaved Lantana

Lantana trifolia
Flowers Flowers Leaves and fruit Leaves and fruit Leaves and flowers Leaves and flowers Lantana trifolia Lantana trifolia
2 Cultivars/Varieties

Three-leaved Stonecrop

Sedum ternatum
Sedum ternatum Sedum ternatum Sedum ternatum Sedum ternatum Sedum ternatum Sedum ternatum Sedum ternatum Sedum ternatum
1 Cultivar/Variety

Three-lobed Coneflower

Rudbeckia triloba
Rudbeckia triloba Rudbeckia triloba Rudbeckia triloba Rudbeckia triloba form in Moore County in summer form in Moore County in summer Leaf closeup Leaf closeup Stem Stem Form Form

Threelobe Spirea

Spiraea trilobata
Spiraea trilobata Spiraea trilobata Spiraea trilobata Spiraea trilobata
2 Cultivars/Varieties

Three-nerved Joe-pye-weed

Eutrochium dubium
Eutrochium dubium Eutrochium dubium Eupatorium dubium Eupatorium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium Eutrochium dubium

Three-seeded Mercury

Acalypha
Form Form Form Form A. hispida grown in a greenhouse A. hispida grown in a greenhouse Form Form Leaves Leaves Leaves Leaves
6 Cultivars/Varieties

Three-seeded Mercury

Acalypha gracilens
Form Form Close up of flower Close up of flower Close up of leaves Close up of leaves Form Form Drawing from 1913 Drawing from 1913

Threespine Barberry

Berberis triacanthophora
Berberis triacanthophora 'Cally Rose' Berberis triacanthophora 'Cally Rose' Shrub with spiny, narrow leaves. Shrub with spiny, narrow leaves.
1 Cultivar/Variety

Three-toothed Cinquefoil

Sibbaldia tridentata
Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata Potentilla tridentata
1 Cultivar/Variety

Three-toothed Maple

Acer buergerianum
Acer buergerianum tree Acer buergerianum tree Color illustration of the technical details of this species. Color illustration of the technical details of this species. Acer buergeranum Acer buergeranum Bark Bark Fall color Fall color Leaves and inflorescence Leaves and inflorescence
10 Cultivars/Varieties

Threeway Sedge

Dulichium arundinaceum var. arundinaceum
Form Form Plant Plant Native habitat Native habitat Leaves seen from above Leaves seen from above inflorescence inflorescence

Three-way Sedge

Dulichium arundinaceum var. arundinaceum
Form Form Plant Plant Native habitat Native habitat Leaves seen from above Leaves seen from above inflorescence inflorescence

Thrift

Phlox subulata
Phlox subulata Phlox subulata Form under Sun Form under Sun Phlox subulata Phlox subulata Phlox subulata 'Red Wing' Phlox subulata 'Red Wing' Phlox subulata Phlox subulata Phlox subulata Phlox subulata
5 Cultivars/Varieties

Throatwort Bellflower

Campanula trachelium
Campanula trachelium flower Campanula trachelium flower Bloom close up Bloom close up Bloom close up Bloom close up Flower and upper leaves Flower and upper leaves Campanula trachelium form Campanula trachelium form Form Form
1 Cultivar/Variety

Thumbwort

Alisma plantago-aquatica
Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo Alisma plantgo
1 Cultivar/Variety

Thunberg Bush Clover

Lespedeza thunbergii
Lespedeza thunbergii Lespedeza thunbergii 'Alba' Flower and Leaf 'Alba' Flower and Leaf Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii
3 Cultivars/Varieties

Thunbergia

Thunbergia alata
Form Form Flower from an unknown yellow cultivar Flower from an unknown yellow cultivar Triangular shaped leaf Triangular shaped leaf Underside of leaf Underside of leaf Bracts at the base of the flowers Bracts at the base of the flowers Flower detail Flower detail
4 Cultivars/Varieties

Thunberg Lespedeza

Lespedeza thunbergii
Lespedeza thunbergii Lespedeza thunbergii 'Alba' Flower and Leaf 'Alba' Flower and Leaf Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii Lespedeza thunbergii
3 Cultivars/Varieties

Thunberg's Barberry

Berberis thunbergii
Japanese barberry Japanese barberry Berberis thunbergii Berberis thunbergii Berberis thunbergii Berberis thunbergii Berberis thunbergii Berberis thunbergii Berberis thunbergii Berberis thunbergii Showy red fruits. Showy red fruits.
12 Cultivars/Varieties

Thunberg's Meadowsweet

Spiraea thunbergii
Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii 'Ogon' Leaf detail Spiraea thunbergii 'Ogon' Leaf detail Spiraea thunbergii 'Ogon' Form Spiraea thunbergii 'Ogon' Form Spiraea thunbergii Spiraea thunbergii
4 Cultivars/Varieties

Thunberg Spiraea

Spiraea thunbergii
Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii Spiraea thunbergii 'Ogon' Leaf detail Spiraea thunbergii 'Ogon' Leaf detail Spiraea thunbergii 'Ogon' Form Spiraea thunbergii 'Ogon' Form Spiraea thunbergii Spiraea thunbergii
4 Cultivars/Varieties

Thundercloud Cherry Plum

Prunus cerasifera 'Thundercloud'
'Thundercloud' form 'Thundercloud' form Flowers Asheville, NC Flowers Asheville, NC Bloom early spring, Henderson County, NC Bloom early spring, Henderson County, NC Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud'

Thundercloud Myrobalan Plum

Prunus cerasifera 'Thundercloud'
'Thundercloud' form 'Thundercloud' form Flowers Asheville, NC Flowers Asheville, NC Bloom early spring, Henderson County, NC Bloom early spring, Henderson County, NC Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud' Prunus cerasifera 'Thundercloud'

Thunderhead Japanese Black Pine

Pinus thunbergii 'Thunderhead'
Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead'

Thunderhead Pine

Pinus thunbergii 'Thunderhead'
Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead' Pinus thunbergii 'Thunderhead'

Thunderwood

Toxicodendron vernix
Form (Alleghany County, NC)-Late Summer Form (Alleghany County, NC)-Late Summer Leaflets of compound leaves (Alleghany County, NC)-Late Summer Leaflets of compound leaves (Alleghany County, NC)-Late Summer Fruit close-up (Alleghany County, NC)-Late Summer Fruit close-up (Alleghany County, NC)-Late Summer Fruit clusters (Alleghany County, NC)-Late Summer Fruit clusters (Alleghany County, NC)-Late Summer Front and back of leaf (Alleghany County, NC)-Late Summer Front and back of leaf (Alleghany County, NC)-Late Summer Stem with buds (Alleghany County, NC)-Late Summer Stem with buds (Alleghany County, NC)-Late Summer

Thurber's Cotton

Gossypium thurberi
Flower and Leaves Flower and Leaves Flower detail Flower detail Fall leaf color Fall leaf color Fruits in Dec. Fruits in Dec. Fruits in Nov. Fruits in Nov. Three lobed leaf Three lobed leaf

Thurnberg Pine

Pinus thunbergii
Pinus thunbergii Pinus thunbergii Pinus thunbergii Pinus thunbergii Pinus thunbergii Pinus thunbergii Pinus thunbergii Pinus thunbergii Leaf Detail Leaf Detail Fruit and Leaf Fruit and Leaf
7 Cultivars/Varieties