Photo of a ring-billed gull standing on a rock, water in background.

    Ring-Billed Gull

    Larus delawarensis
    large colorful bird in grass

    Ring-Necked Pheasant

    Phasianus colchicus
    Illustration of riverbank grape leaves, flowers, fruit

    Riverbank Grape

    Vitis riparia
    fork and knife icon

    Edible

    image of Robber Fly

    Robber Flies

    More than 1,000 species in North America
    Photo of a rose gentian flower, closeup

    Rose Gentian (Rose Pink)

    Sabatia angularis
    Photo of rose verbena, or rose vervain, flower cluster showing leaves

    Rose Verbena (Rose Vervain)

    Glandularia canadensis (formerly Verbena canadensis)
    Image of a rose-breasted grosbeak

    Rose-Breasted Grosbeak

    Pheucticus ludovicianus
    image of a Rosy Maple Moth

    Rosy Maple Moth

    Dryocampa rubicunda
    Illustration of rough-leaved dogwood leaves, flowers, fruits.

    Rough-Leaved Dogwood

    Cornus drummondii
    Photo of round-leaved groundsel plant with flower clusters

    Round-Leaved Groundsel (Round-Leaved Ragwort)

    Packera obovata (formerly Senecio obovatus)
    Photo of royal catchfly flowers

    Royal Catchfly

    Silene regia
    Ruby-throated hummingbird in flight

    Ruby-Throated Hummingbird

    Archilochus colubris
    Photo of ruffed grouse standing on a log

    Ruffed Grouse

    Bonasa umbellus
    Image of running buffalo clover

    Running Buffalo Clover

    Trifolium stoloniferum
    exclamation mark

    Endangered

    Photo of path rush, closeup showing drying fruits.

    Rushes

    Juncus spp. and Luzula spp.
    Illustration of Russian olive leaves, flowers, fruits, twigs, thorns.

    Russian Olive

    Elaeagnus angustifolia
    invasive icon

    Invasive

    image of a Sachem, Wings Folded

    Sachem

    Atalopedes campestris
    image of Sand Wasp perched on sand

    Sand Wasps

    Numerous species and genera in Missouri
    Illustration of sassafras leaves, flowers, fruit.

    Sassafras

    Sassafras albidum
    Photo of a savannah sparrow

    Savannah Sparrow

    Passerculus sandwichensis
    Photo of sawtooth sunflower flowerhead.

    Sawtooth Sunflower

    Helianthus grosseserratus
    Male eastern Hercules beetle walking in grass

    Scarab Beetles

    About 1,700 species in North America north of Mexico.
    Photo of scarlet pimpernel flower and plant

    Scarlet Pimpernel (Poor Man’s Weatherglass)

    Anagallis arvensis (Lysamachia arvensis)
    Image of a male scarlet tanager

    Scarlet Tanager

    Piranga olivacea
    Photo of a male scissor-tailed flycatcher perched on a barbwire fence.

    Scissor-Tailed Flycatcher

    Tyrannus forficatus
    Photo of eastern woodland sedge plant growing among leaf litter.

    Sedges

    Carex, Schoenoplectus, Scirpus, and other genera
    Photo of self-heal flower head

    Self-Heal (Heal-All)

    Prunella vulgaris
    fork and knife icon

    Edible

    Photo of sensitive brier flowers

    Sensitive Briar

    Mimosa quadrivalvis (also Schrankia nuttallii)
    Photo of large group of sericea lespedeza plants

    Sericea Lespedeza

    Lespedeza cuneata
    invasive icon

    Invasive

    Photo of sesbania flowers and foliage

    Sesbania (Coffeeweed)

    Sesbania herbacea (formerly S. exaltata)
    Poisonous Icon

    Poisonous

    invasive icon

    Invasive

    Photo of a sharp-shinned hawk standing on the ground

    Sharp-Shinned Hawk

    Accipiter striatus
    Photo of shepherd’s purse plant and flowers

    Shepherd's Purse

    Capsella bursa-pastoris
    fork and knife icon

    Edible

    Illustration of shingle oak leaf.

    Shingle Oak

    Quercus imbricaria
    Photo of shining blue star flower cluster

    Shining Blue Star

    Amsonia illustris
    image of a Carolina Grasshopper

    Short-Horned Grasshoppers

    About 620 species in North America
    Photo of showy evening primrose plant with flowers

    Showy Evening Primrose

    Oenothera speciosa
    Photo of showy partridge pea showing flowers, buds, and leaves.

    Showy Partridge Pea

    Chamaecrista fasciculata (formerly Cassia fasciculata)
    Short-tailed shrew pointing its head upward

    Shrews

    Sorex, Blarina, and Cryptotis spp.
    Illustration of Siberian elm leaves and twigs.

    Siberian Elm

    Ulmus pumila
    Photo of sideoats grama, closeup on floral spikes showing orange anthers.

    Sideoats Grama

    Bouteloua curtipendula
    Illustration of silver maple leaf and fruit.

    Silver Maple

    Acer saccharinum
    Image of a silver-spotted skipper

    Silver-Spotted Skipper

    Epargyreus clarus
    Photo of a silvery checkerspot, Wings Folded

    Silvery Checkerspot

    Chlosyne nycteis
    Photo of an unidentified grass skipper

    Skippers

    About 275 species in North America north of Mexico
    Photo of slender bush clover flowers

    Slender Bush Clover

    Lespedeza virginica

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