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Single Spruce

Picea laxa
Picea glauca Picea glauca Form (Matanuska-Susitna, AK)-Mid Summer Form (Matanuska-Susitna, AK)-Mid Summer Form Form Pine Cone Pine Cone Leaf Blade Leaf Blade Form Form
12 Cultivars/Varieties

Singletary Pea

Lathyrus
Lathyrus spp. Lathyrus spp. Lathyrus spp. Lathyrus spp. Lathyrus spp. Lathyrus spp.
4 Cultivars/Varieties

Sioux Crape Myrtle

Lagerstroemia 'Sioux'
Lagerstroemia 'Sioux' Lagerstroemia 'Sioux' Lagerstroemia 'Sioux' Lagerstroemia 'Sioux' Lagerstroemia 'Sioux' Lagerstroemia 'Sioux'

Sisi

Beschorneria yuccoides
Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides Form Form Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides Beschorneria yuccoides

'Siskiyou Pink' Gaura

Oenothera lindheimeri 'Siskiyou Pink'

Sister Violet

Viola sororia
Viola papilionacea Viola papilionacea Viola papilionacea Viola papilionacea Viola papilionacea Viola papilionacea Viola papilionacea Viola papilionacea Viola sororia Viola sororia Viola sororia Viola sororia
3 Cultivars/Varieties

Sitherwood

Artemisia abrotanum
Feathery leaves. Feathery leaves. Leaves and stems. Leaves and stems. Finely divided leaves. Finely divided leaves. Close up of leaves. Close up of leaves. Artemisia abrotanum Artemisia abrotanum Artemisia abrotanum Artemisia abrotanum

Sitka Burnet

Sanguisorba canadensis
Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis Sanguisorba canadensis

Sitka Spruce

Picea sitchensis
Form in August in British Columbia, Canada Form in August in British Columbia, Canada Needles in August in British Columbia, Canada Needles in August in British Columbia, Canada Cone in November in Shohomish County, Washington Cone in November in Shohomish County, Washington
1 Cultivar/Variety

Six Petal Water Primrose

Ludwigia hexapetala
Form in flower Form in flower 6-petal flower 6-petal flower Flower and lanceolate leaves Flower and lanceolate leaves Leaves in a rosette Leaves in a rosette Back of flower, stems with hairs Back of flower, stems with hairs Stem and leaves Stem and leaves

Skandia Savin Juniper

Juniperus sabina 'Skandia'
Juniperus sabina 'Skandia' Juniperus sabina 'Skandia'

Skeleton Fern

Psilotum nudum
Form in a botanical garden Form in a botanical garden Plant Plant Growing in a rock crevice Growing in a rock crevice Epiphyte form Epiphyte form

Skeleton Fork Fern

Psilotum nudum
Form in a botanical garden Form in a botanical garden Plant Plant Growing in a rock crevice Growing in a rock crevice Epiphyte form Epiphyte form

Skip Cherry Laurel

Prunus laurocerasus 'Schipkaensis'
Planted in a small grouping, Haywood County, NC - Summer Planted in a small grouping, Haywood County, NC - Summer Form, Haywood County, NC - Summer Form, Haywood County, NC - Summer Leaf close up Leaf close up New growth, alternate leaf attachment. New growth, alternate leaf attachment. Provide cover for birds like this Eastern towhee nest. Provide cover for birds like this Eastern towhee nest.

Skip Laurel

Prunus laurocerasus 'Schipkaensis'
Planted in a small grouping, Haywood County, NC - Summer Planted in a small grouping, Haywood County, NC - Summer Form, Haywood County, NC - Summer Form, Haywood County, NC - Summer Leaf close up Leaf close up New growth, alternate leaf attachment. New growth, alternate leaf attachment. Provide cover for birds like this Eastern towhee nest. Provide cover for birds like this Eastern towhee nest.

Skullcap

Scutellaria suffrutescens
Scutellaria suffrutescens Scutellaria suffrutescens Scutellaria suffrutescens Scutellaria suffrutescens
1 Cultivar/Variety

Skullcap

Scutellaria pontica
Scutellaria pontica Scutellaria pontica

Skull Cap

Scutellaria incana
Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana Scutellaria incana
1 Cultivar/Variety

Skullcaps

Scutellaria
Inflorescence of purple, 2-lipped flowers. Inflorescence of purple, 2-lipped flowers. Leaves of S. lateriflora Leaves of S. lateriflora small plants with purple, 2-lipped flowers. small plants with purple, 2-lipped flowers. small spreading plant with yellow, 2-lipped flowers. small spreading plant with yellow, 2-lipped flowers. small spreading plant with purple, 2-lipped flowers. small spreading plant with purple, 2-lipped flowers. small spreading plant with red, 2-lipped flowers. small spreading plant with red, 2-lipped flowers.

Skunkbush

Rhus trilobata
'Autumn Amber' Flower and Leaves 'Autumn Amber' Flower and Leaves
1 Cultivar/Variety

Skunkbush Sumac

Rhus trilobata
'Autumn Amber' Flower and Leaves 'Autumn Amber' Flower and Leaves
1 Cultivar/Variety

Skunk Cabbage

Symplocarpus foetidus
Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus

Skunk Meadowrue

Thalictrum amphibolum
foliage. foliage. Flowers Flowers

Skunk Spruce

Picea laxa
Picea glauca Picea glauca Form (Matanuska-Susitna, AK)-Mid Summer Form (Matanuska-Susitna, AK)-Mid Summer Form Form Pine Cone Pine Cone Leaf Blade Leaf Blade Form Form
12 Cultivars/Varieties

Skunk Weed

Symplocarpus foetidus
Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus Symplocarpus foetidus

Skyblue Aster

Symphyotrichum oolentangiense
Flowers Flowers Form in bloom Form in bloom Side view of flower Side view of flower Flowers, buds and stem Flowers, buds and stem Leaves Leaves Underside of leaf Underside of leaf

Sky Blue Aster

Symphyotrichum oolentangiense
Flowers Flowers Form in bloom Form in bloom Side view of flower Side view of flower Flowers, buds and stem Flowers, buds and stem Leaves Leaves Underside of leaf Underside of leaf

Skyblue Lupine

Lupinus diffusus
Lupinus diffusus Lupinus diffusus

Sky-blue Sage

Salvia uliginosa
Flower spike with several pale blue flowers. One has a tiny bee. Flower spike with several pale blue flowers. One has a tiny bee. Spike of blue flowers with large bee. Spike of blue flowers with large bee. Shrubby plant with spikes of light blue flowers Shrubby plant with spikes of light blue flowers light blue flowers on upright inflorescences. light blue flowers on upright inflorescences. Erect flower stalks bearing light blue flowers. Erect flower stalks bearing light blue flowers. Foliage. Leaves are narrow and opposite. Foliage. Leaves are narrow and opposite.

Skyflower

Duranta erecta
leaves and flowers leaves and flowers Form Form Form Form Flower detail Flower detail leaves leaves leaves and fruits leaves and fruits
6 Cultivars/Varieties

Skyland

Picea orientalis
Picea orientalis Picea orientalis Picea orientalis Picea orientalis Form Form Form Form Form Form Form Form
5 Cultivars/Varieties

Skylands Oriental Spruce

Picea orientalis 'Skylands'
Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands' Picea orientalis 'Skylands'

Sky Pencil

Ilex crenata 'Sky Pencil'
Upright, fastigiate evergreen with fine, green foliage. Upright, fastigiate evergreen with fine, green foliage. Ilex crenata 'Sky Pencil' Ilex crenata 'Sky Pencil' New growth form New growth form Leafy shoots with small, fine crenate leaves Leafy shoots with small, fine crenate leaves

Sky Pencil Holly

Ilex crenata 'Sky Pencil'
Upright, fastigiate evergreen with fine, green foliage. Upright, fastigiate evergreen with fine, green foliage. Ilex crenata 'Sky Pencil' Ilex crenata 'Sky Pencil' New growth form New growth form Leafy shoots with small, fine crenate leaves Leafy shoots with small, fine crenate leaves

Slan-lus

Plantago major
Plantago major Plantago major Plantago major Plantago major Plantago major Plantago major Plantago major Plantago major

Slash Pine

Pinus elliottii
Form Form Color illustrations of the technical details of this species. Color illustrations of the technical details of this species. Leaves Leaves Branches Branches Needles Needles Bark Bark
2 Cultivars/Varieties

Sleeping Beauty

Oxalis
Flowers and Leaves Flowers and Leaves Oxalis violaccea Oxalis violaccea Flowers Flowers Oxalis bifida Oxalis bifida Oxalis stricta Oxalis stricta Entire plant with roots and rhizomes exposed Entire plant with roots and rhizomes exposed
19 Cultivars/Varieties

Sleeping Plant

Chamaecrista fasciculata
Chamaecrista fasciculata Chamaecrista fasciculata Close up of flower Close up of flower Leaves Leaves Chamaecrista fasciculata Chamaecrista fasciculata Chamaecrista fasciculata Chamaecrista fasciculata Plant Plant

Sleeping Plant

Chamaecrista nictitans
Form Form leaves and flowers leaves and flowers Stem with flowers and leaves Stem with flowers and leaves

Slender Agalinis

Agalinis tenuifolia
Agalinis tenuifolia Agalinis tenuifolia Form growing along a pond with pinkish flowers Form growing along a pond with pinkish flowers Agalinis tenuifolia Agalinis tenuifolia Agalinis tenuifolia Agalinis tenuifolia sprawling plant with narrow leaves and pink flowers. sprawling plant with narrow leaves and pink flowers. ruler next to the leaves to show they are <3 mm wide. ruler next to the leaves to show they are <3 mm wide.

Slender Beardtongue

Penstemon australis
Form Form Flowers Flowers Flowers Flowers Stem and leaves Stem and leaves Leaves Leaves

Slender Betony

Stachys tenuifolia
Stachys tenuifolia Stachys tenuifolia Stachys tenuifolia Stachys tenuifolia

Slender Bladderwort

Utricularia subulata
Native habitat Native habitat Flowers Flowers Leaves Leaves Utricularia subulata Utricularia subulata

Slender Blue-eyed Grass

Sisyrinchium mucronatum
Sisyrinchium mucronatum Sisyrinchium mucronatum

Slender Bush-clover

Lespedeza virginica
Flower Flower Lespedeza virginica Lespedeza virginica Lespedeza virginica Lespedeza virginica Lespedeza virginica Lespedeza virginica

Slender Celery

Cyclospermum leptophyllum
Cyclospermum leptophyllum habit Cyclospermum leptophyllum habit Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum Cyclospermum leptophyllum flowerhead Cyclospermum leptophyllum flowerhead Cyclospermum leptophyllum fruit Cyclospermum leptophyllum fruit

Slender Copperleaf

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

Slender Deutzia

Deutzia gracilis
Close-up of a cluster of white, star-shaped flowers. Close-up of a cluster of white, star-shaped flowers. Low shrub with clusters of white flowers. Low shrub with clusters of white flowers. Low shrub with clusters of white flowers. Low shrub with clusters of white flowers. Low shrub with mounding mounding habit and arching branches. Low shrub with mounding mounding habit and arching branches. Leafy branch with small white pendulous flower buds Leafy branch with small white pendulous flower buds Low shrub with cluster of white flowers. Low shrub with cluster of white flowers.
4 Cultivars/Varieties