501. Hemlock Waterparsnip
Sium suave
502. Devil’s Beggarticks
Bidens frondosa
503. White Panicle Aster
Symphyotrichum lanceolatum
504. Cursed Crowfoot
Ranunculus sceleratus
505. Star Duckweed
Lemna trisulca
506. Clasping Venus’ Looking-Glass
Triodanis perfoliata
507. Witchgrass
Panicum capillare
508. Nodding Beggartick
Bidens cernua
509. Softstem Bulrush
Schoenoplectus tabernaemontani
510. Blunt Spikerush
Eleocharis obtusa
511. Northern Water Plantain
Alisma triviale
512. American Water Horehound
Lycopus americanus
513. Mexican Muhly
Muhlenbergia mexicana
514. Sixweeks Fescue
Vulpia octoflora
515. Tapered Rosette Grass
Panicum acuminatum
516. Broomsedge Bluestem
Andropogon virginicus
517. American Bittersweet
Celastrus scandens
518. Woolgrass
Scirpus cyperinus
519. Sallow Sedge
Carex lurida
520. Smooth Alder
Alnus serrulata
521. Blackjack Oak
Quercus marilandica
522. Stout Woodreed
Cinna arundinacea
523. Downy Hawthorn
Crataegus mollis
524. Heartleaf Skullcap
Scutellaria ovata
525. Purpletop Tridens
Tridens flavus
526. Field Pussytoes
Antennaria neglecta
527. Downy Yellow Violet
Viola pubescens
528. Common Pricklyash
Zanthoxylum americanum
529. Bicknell’s Sedge
Carex bicknellii
530. Blunt Broom Sedge
Carex tribuloides
531. Limestone Meadow Sedge
Carex granularis
532. Emory’s Sedge
Carex emoryi
533. Shortbeak Sedge
Carex brevior
534. Greater Straw Sedge
Carex normalis
535. James’s Sedge
Carex jamesii
536. False Boneset
Brickellia eupatorioides
537. Arrowleaf Aster
Symphyotrichum urophyllum
538. Whorled Loosestrife
Lysimachia quadriflora
539. Dwarf Hackberry
Celtis tenuifolia
540. American Pokeweed
Phytolacca americana
541. Canadian Honewort
Cryptotaenia canadensis
542. Common Moonseed
Menispermum canadense
543. Heartleaf Four O’Clock
Mirabilis nyctaginea
544. Dwarf St. John’s Wort
Hypericum mutilum
545. Agueweed
Gentianella quinquefolia
546. Small Palafox
Palafoxia callosa
547. Heartleaf Peppervine
Ampelopsis cordata
548. White Vervain
Verbena urticifolia
549. Licorice Bedstraw
Galium circaezans
550. Rough Dropseed
Sporobolus compositus
551. Bulbous Bittercress
Cardamine bulbosa
552. Late Hawthorn
Crataegus calpodendron
553. Cuman Ragweed
Ambrosia psilostachya
554. Sharp-Fruit Rush
Juncus acuminatus
555. Scouringrush Horsetail
Equisetum hyemale subsp. affine
556. Red Mulberry
Morus rubra
557. Shellbark Hickory
Carya laciniosa
558. Bitternut Hickory
Carya cordiformis
559. Hop Sedge
Carex lupulina
560. Blue Ash
Fraxinus quadrangulata
561. Slippery Elm
Ulmus rubra
562. Squarrose Sedge
Carex squarrosa
563. Sandbar Willow
Salix exigua
564. Short’s Sedge
Carex shortiana
565. Bottlebrush Sedge
Carex hystericina
566. False Nettle
Boehmeria cylindrica
567. Blister Sedge
Carex vesicaria
568. Cattail Sedge
Carex typhina
569. Frank’s Sedge
Carex frankii
570. Ovate Spikerush
Eleocharis ovata
571. Pale Indian Plantain
Arnoglossum atriplicifolium
572. Common Cinquefoil
Potentilla simplex
573. Longstyle Sweetroot
Osmorhiza longistylis
574. Wild Yam
Dioscorea villosa
575. Interior Rush
Juncus interior
576. Small-Flowered Agrimony
Agrimonia parviflora
577. Eastern Swamp Saxifrage
Micranthes pensylvanica
578. Mockernut Hickory
Carya alba
579. Clayton’s Sweetroot
Osmorhiza claytonii
580. Panicled-Leaf Ticktrefoil
Desmodium paniculatum
581. Sand Sedge
Carex muehlenbergii
582. Gum Bully
Sideroxylon lanuginosum
583. Plains Cottonwood
Populus deltoides subsp. monilifera
584. Oval-Leaf Sedge
Carex cephalophora
585. Husk Tomato
Physalis pubescens
586. Velvetweed
Oenothera curtiflora
587. Orangegrass
Hypericum gentianoides
588. Southern Annual Saltmarsh Aster
Symphyotrichum divaricatum
589. Spotted Water Hemlock
Cicuta maculata
590. White Four O’Clock
Mirabilis albida
591. Squarestem Spikerush
Eleocharis quadrangulata
592. Dudley’s Rush
Juncus dudleyi
593. Carolina Geranium
Geranium carolinianum
594. River Bulrush
Bolboschoenus fluviatilis
595. Woolly Sedge
Carex pellita
596. American Cow-Parsnip
Heracleum maximum
597. Riverbank Wild Rye
Elymus riparius
598. Deertongue
Panicum clandestinum
599. Annual Wildrice
Zizania aquatica
600. Green Milkweed
Asclepias viridiflora
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