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Two species from the yellow-eyed grass family: left, Xyris caroliniana; right, Xyris flexuosa.

Yellow-Eyed Grass

Two species from the yellow-eyed grass family: left, Xyris caroliniana; right, Xyris flexuosa.

Two species of the spiderwort family: left, Virginia day flower (Commelina virginica); right, spiderwort (Tradescantia virginiana).

Spiderworts

Two species of the spiderwort family: left, Virginia day flower (Commelina virginica); right, spiderwort…

Two species of the pickerel weed family: right, pickerel weed (Pontederia cordata); left, mud plantain (Heteranthera reniformis).

Pickerel Weeds

Two species of the pickerel weed family: right, pickerel weed (Pontederia cordata); left, mud plantain…

Two species of the lily family (Liliaceae): left, carrion flower (Smilax herbacea); right, green brier (Smilax rotundifolia).

S. Herbacea and S. Rotundifolia

Two species of the lily family (Liliaceae): left, carrion flower (Smilax herbacea); right, green brier…

From the lily family (Liliaceae), the twisted stalk or Streptopus roseus.

S. Roseus

From the lily family (Liliaceae), the twisted stalk or Streptopus roseus.

From the lily family (Liliaceae), the false spikenard or Smilacina racemosa.

S. Racemosa

From the lily family (Liliaceae), the false spikenard or Smilacina racemosa.

Two species of the lily family (Liliaceae): left, false Solomon's seal (Smilacina stellata); right, Smilacina trifolia.

S. Stellata and S. Trifolia

Two species of the lily family (Liliaceae): left, false Solomon's seal (Smilacina stellata); right,…

Two species of the lily family (Liliaceae): left, Canada Mayflower (Maianthemum canadense); right, lily of the valley (Convallaria majalis).

M. Canadense and C. Majalis

Two species of the lily family (Liliaceae): left, Canada Mayflower (Maianthemum canadense); right, lily…

Of the lily family (Liliaceae), Solomon's seal or Polygonatum biflorum.

P. Biflorum

Of the lily family (Liliaceae), Solomon's seal or Polygonatum biflorum.

Two species of the lily family (Liliaceae): right, large-flowered bellwort (Uvularia grandiflora); left, Oakesia sessilifolia.

U. Grandiflora and O. Sessilifolia

Two species of the lily family (Liliaceae): right, large-flowered bellwort (Uvularia grandiflora); left,…

Two species of the lily family (Liliaceae): top, wake robin (Trillium erectum); middle, painted trillium (Trillium undulatum); bottom, berry of T. undulatum.

T. Erectum and T. Undulatum

Two species of the lily family (Liliaceae): top, wake robin (Trillium erectum); middle, painted trillium…

Some species of the lily family (Liliaceae): top, nodding trillium (Trillium cernuum); left, erect flower of Trillium recurvatum; right, dwarf white trillium (Trillium nivale).

Trillium Lilies

Some species of the lily family (Liliaceae): top, nodding trillium (Trillium cernuum); left, erect flower…

Of the lily family (Liliaceae), the Indian cucumber or Medeola Virginica.

M. Virginica

Of the lily family (Liliaceae), the Indian cucumber or Medeola Virginica.

Of the lily family (Liliaceae), Veratrum viride.

V. Viride

Of the lily family (Liliaceae), Veratrum viride.

Of the lily family (Liliaceae), Melanthium virginicum.

M. Virginicum

Of the lily family (Liliaceae), Melanthium virginicum.

Of the lily family (Liliaceae), the devil's bit or Chamaelirium luteum.

C. Luteum

Of the lily family (Liliaceae), the devil's bit or Chamaelirium luteum.

Of the lily family (Liliaceae), the wood lily, or Lilium Philadelphicum.

Wood Lily

Of the lily family (Liliaceae), the wood lily, or Lilium Philadelphicum.

Of the lily family (Liliaceae), the yellow meadow lily or Lilium Canadense.

Yellow Meadow Lily

Of the lily family (Liliaceae), the yellow meadow lily or Lilium Canadense.

Of the lily family (Liliaceae), the Turk's cap lily or Lilium superbum.

Turk's Cap Lily

Of the lily family (Liliaceae), the Turk's cap lily or Lilium superbum.

Two species of the lily family (Liliaceae): right, yellow adder's tongue (Erythronium Americanum); left, white adder's tongue (Erythronium albidum).

E. Americanum and E. Albidum

Two species of the lily family (Liliaceae): right, yellow adder's tongue (Erythronium Americanum); left,…

Of the lily family (Liliaceae), the wild garlic or Allium Canadense.

Wild Garlic

Of the lily family (Liliaceae), the wild garlic or Allium Canadense.

Of the lily family (Liliaceae), the wild leek or Allium tricoccum.

Wild Leek

Of the lily family (Liliaceae), the wild leek or Allium tricoccum.

Of the hyacinth family (Hyacinthaceae), the Star-of-Bethlehem or Ornithogalum umbellatum.

Star of Bethlehem Hyacinth

Of the hyacinth family (Hyacinthaceae), the Star-of-Bethlehem or Ornithogalum umbellatum.

Of the amaryllis family (Amaryllidaceae), the Atamasco lily or Zephyranthes Atamasco.

Atamasco Amaryllis

Of the amaryllis family (Amaryllidaceae), the Atamasco lily or Zephyranthes Atamasco.

Of the amaryllis family (Amaryllidaceae), star grass or Hypoxis hirsuta.

Star Grass

Of the amaryllis family (Amaryllidaceae), star grass or Hypoxis hirsuta.

Of the iris family (Iridaceae), the blue flag or Iris versicolor.

Blue Flag

Of the iris family (Iridaceae), the blue flag or Iris versicolor.

Of the iris family (Iridaceae): foreground, crested dwarf iris (Iris cristata); background, blackberry lily (Belamcanda Chinensis).

I. Cristata and B. Chinensis

Of the iris family (Iridaceae): foreground, crested dwarf iris (Iris cristata); background, blackberry…

Of the iris family (Iridaceae), blue-eyed grass or Sisyrinchium angustifolium.

Blue-Eyed Grass

Of the iris family (Iridaceae), blue-eyed grass or Sisyrinchium angustifolium.

Of the iris family (Iridaceae), stout blue-eyed grass or Sisyrinchium gramineum.

Stout Blue-Eyed Grass

Of the iris family (Iridaceae), stout blue-eyed grass or Sisyrinchium gramineum.

Of the orchid family (Orchidaceae), green adder's mouth or Microstylis unifolia.

Green Adder's Mouth

Of the orchid family (Orchidaceae), green adder's mouth or Microstylis unifolia.

Of the orchid family (Orchidaceae), large coral root or Corallorhiza maculata.

Large Coral Root

Of the orchid family (Orchidaceae), large coral root or Corallorhiza maculata.

Of the orchid family (Orchidaceae), large twayblade or Liparis liliifolia.

Large Twayblade

Of the orchid family (Orchidaceae), large twayblade or Liparis liliifolia.

Of the orchid family (Orchidaceae), early coral root or Corallorhiza trifida.

Early Coral Root

Of the orchid family (Orchidaceae), early coral root or Corallorhiza trifida.

Of the orchid family (Orchidaceae), heart-leaved twayblade or Listera cordata.

Heart-Leaved Twayblade

Of the orchid family (Orchidaceae), heart-leaved twayblade or Listera cordata.

Of the orchid family (Orchidaceae), Spiranthes Romanzoffiana.

S. Romanzoffiana

Of the orchid family (Orchidaceae), Spiranthes Romanzoffiana.

Of the orchid family (Orchidaceae), slender ladies' tresses, Spiranthes gracilis.

Slender Ladies' Tresses

Of the orchid family (Orchidaceae), slender ladies' tresses, Spiranthes gracilis.

Of the orchid family (Orchidaceae), rattlesnake plantain or Epipactis repens var. ophioides.

E. Repens var. Ophioides

Of the orchid family (Orchidaceae), rattlesnake plantain or Epipactis repens var. ophioides.

Of the orchid family (Orchidaceae), Epipactis tesselata.

E. Tesselata

Of the orchid family (Orchidaceae), Epipactis tesselata.

Of the orchid family (Orchidaceae), the rattlesnake plantain or Epipactis pubescens.

Rattlesnake Plantain

Of the orchid family (Orchidaceae), the rattlesnake plantain or Epipactis pubescens.

Of the orchid family (Orchidaceae), Arethusa bulbosa.

Arethusa

Of the orchid family (Orchidaceae), Arethusa bulbosa.

Of the orchid family (Orchidaceae), the grass pink or Calopogon pulchellus.

Grass Pink

Of the orchid family (Orchidaceae), the grass pink or Calopogon pulchellus.

Of the orchid family (Orchidaceae), the snake mouth or Pogonia ophioglossoides.

Snake Mouth

Of the orchid family (Orchidaceae), the snake mouth or Pogonia ophioglossoides.

Of the orchid family (Orchidaceae), the showy orchis or Orchis spectabilis.

Showy Orchis

Of the orchid family (Orchidaceae), the showy orchis or Orchis spectabilis.

Of the orchid family (Orchidaceae), Pogonia verticillata.

P. Verticillata

Of the orchid family (Orchidaceae), Pogonia verticillata.

Of the orchid family (Orchidaceae), the green wood orchis or Habenaria clavellata.

Green Wood Orchis

Of the orchid family (Orchidaceae), the green wood orchis or Habenaria clavellata.

Of the orchid family (Orchidaceae), Habenaria flava

H. Flava

Of the orchid family (Orchidaceae), Habenaria flava

Of the orchid family (Orchidaceae), Habenaria hyperborea

H. Hyperborea

Of the orchid family (Orchidaceae), Habenaria hyperborea

Of the orchid family (Orchidaceae), Habenaria nivea.

H. Nivea

Of the orchid family (Orchidaceae), Habenaria nivea.

Of the orchid family (Orchidaceae), Habenaria integra.

H. Integra

Of the orchid family (Orchidaceae), Habenaria integra.

Of the orchid family (Orchidaceae), Habenaria cristata.

H. Cristata

Of the orchid family (Orchidaceae), Habenaria cristata.

Of the orchid family (Orchidaceae), the yellow fringed orchis or Habenaria ciliaris.

Yellow Fringed Orchis

Of the orchid family (Orchidaceae), the yellow fringed orchis or Habenaria ciliaris.

Of the orchid family (Orchidaceae), the green round-leaved orchis or Habenaria orbiculata.

Green Round-Leaved Orchis

Of the orchid family (Orchidaceae), the green round-leaved orchis or Habenaria orbiculata.

Of the orchid family (Orchidaceae), Habenaria bracteata.

H. Bracteata

Of the orchid family (Orchidaceae), Habenaria bracteata.

Of the orchid family (Orchidaceae), Habenaria blephariglottis.

H. Blephariglottis

Of the orchid family (Orchidaceae), Habenaria blephariglottis.

Of the orchid family (Orchidaceae), Habenaria leucophaea.

H. Leucophaea

Of the orchid family (Orchidaceae), Habenaria leucophaea.

Of the orchid family (Orchidaceae), the ragged fringed orchis, Habenaria lacera.

Ragged Fringed Orchis

Of the orchid family (Orchidaceae), the ragged fringed orchis, Habenaria lacera.

Of the orchid family (Orchidaceae), the smaller purple fringed orchis, Habenaria psycodes.

Smaller Purple Fringed Orchis

Of the orchid family (Orchidaceae), the smaller purple fringed orchis, Habenaria psycodes.

Of the orchid family (Orchidaceae), yellow lady's slipper or Cypripedium parviflorum.

Yellow Lady's Slipper

Of the orchid family (Orchidaceae), yellow lady's slipper or Cypripedium parviflorum.

Of the orchid family (Orchidaceae), moccasin flower or Cypripedium acaule.

Moccasin Flower

Of the orchid family (Orchidaceae), moccasin flower or Cypripedium acaule.

Of the birthwort family (Aristolochiaceae), the wild ginger or Asarum Canadense.

Wild Ginger

Of the birthwort family (Aristolochiaceae), the wild ginger or Asarum Canadense.