501. Buckthorn Bully
Sideroxylon lycioides
502. Willdenow’s Sedge
Carex willdenowii
503. Carolina Geranium
Geranium carolinianum
504. Green Milkweed
Asclepias viridiflora
505. Troublesome Sedge
Carex molesta
506. Indian-Tobacco
Lobelia inflata
507. Yellow Crownbeard
Verbesina occidentalis
508. American Hogpeanut
Amphicarpaea bracteata
509. Sensitive Partridge Pea
Chamaecrista nictitans
510. Great Waterleaf
Hydrophyllum appendiculatum
511. Miami Mist
Phacelia purshii
512. Pennsylvania Smartweed
Persicaria pensylvanica
513. Virginia Dayflower
Commelina virginica
514. Upland Bentgrass
Agrostis perennans
515. Upland Boneset
Eupatorium sessilifolium
516. Whiteflower Leafcup
Polymnia canadensis
517. Lance-Leaved Violet
Viola lanceolata
518. Whorled Yellow Loosestrife
Lysimachia quadrifolia
519. Waxyleaf Meadow-Rue
Thalictrum revolutum
520. Hairy Mock Orange
Philadelphus hirsutus
521. Marsh Mermaidweed
Proserpinaca palustris
522. Hairy Woodland Sedge
Carex hirsutella
523. Broad Loose-Flowered Sedge
Carex laxiflora
524. Globe Flatsedge
Cyperus echinatus
525. Bearsfoot
Smallanthus uvedalia
526. Pepper Vine
Nekemias arborea
527. Summer Grape
Vitis aestivalis
528. Bigleaf Snowbell
Styrax grandifolius
529. Small Skullcap
Scutellaria parvula
530. Amberique-Bean
Strophostyles helvola
531. Pumpkin Ash
Fraxinus profunda
532. Bristly Buttercup
Ranunculus hispidus
533. Early Buttercup
Ranunculus fascicularis
534. Crowpoison
Nothoscordum bivalve
535. Yellow Lady’s Slipper
Cypripedium parviflorum
536. Soft Fox Sedge
Carex conjuncta
537. White-Edge Sedge
Carex debilis
538. Tall Tick-Trefoil
Desmodium glabellum
539. Bog Rush
Juncus biflorus
540. Frost Grape
Vitis vulpina
541. Rock Elm
Ulmus thomasii
542. Yellow Fumewort
Corydalis flavula
543. Roundleaf Greenbrier
Smilax rotundifolia
544. Cat Greenbriar
Smilax glauca
545. Annual Fleabane
Erigeron annuus
546. Virginia Three-Seed Mercury
Acalypha virginica
547. Swamp Cottonwood
Populus heterophylla
548. Largeleaf Waterleaf
Hydrophyllum macrophyllum
549. Southern Wood-Sorrel
Oxalis dillenii
550. Rattlesnake Fern
Botrypus virginianus
551. Painted Leaf Poinsettia
Euphorbia heterophylla var. cyathophora
552. Twoheaded Water-Starwort
Callitriche heterophylla
553. Cinnamon Fern
Osmunda cinnamomea
554. Purple Cliffbrake
Pellaea atropurpurea
555. Yellow Flatsedge
Cyperus flavescens
556. Blackstem Spleenwort
Asplenium resiliens
557. Lanceleaf Buckthorn
Rhamnus lanceolata
558. Juniper Leaf
Polypremum procumbens
559. False Mint
Dicliptera brachiata
560. Common Groundcherry
Physalis longifolia
561. Clammy Groundcherry
Physalis heterophylla
562. Ontario Aster
Symphyotrichum ontarionis
563. Butterweed
Packera glabella
564. Bearded Meadow-Parsnip
Thaspium barbinode
565. Canadian Blacksnakeroot
Sanicula canadensis
566. Pink Fuzzybean
Strophostyles umbellata
567. Trailing Bush-Clover
Lespedeza procumbens
568. Round-Leaved Tick Trefoil
Desmodium rotundifolium
569. Spring Lady’s Tresses
Spiranthes vernalis
570. Flat-Stemmed Spike-Rush
Eleocharis compressa
571. Variable Panicgrass
Panicum commutatum
572. Small Venus’ Looking-Glass
Triodanis biflora
573. Whorled Rosinweed
Silphium asteriscus var. trifoliatum
574. Glade Fern
Homalosorus pycnocarpos
575. Bare-Stemmed Tick-Trefoil
Hylodesmum nudiflorum
576. Whorled Milkwort
Polygala verticillata
577. Potato Dwarfdandelion
Krigia dandelion
578. Violet Lespedeza
Lespedeza violacea
579. Threeflower Melicgrass
Melica nitens
580. Marsh Seedbox
Ludwigia palustris
581. Philadelphia Fleabane
Erigeron philadelphicus
582. False Daisy
Eclipta prostrata
583. Bastard Toadflax
Comandra umbellata
584. False Nutsedge
Cyperus strigosus
585. Virginia Pepperweed
Lepidium virginicum
586. False Aloe
Agave virginica
587. Eastern Poison Ivy
Toxicodendron radicans
588. Balloon Cherry
Physalis angulata
589. Prairie Wedgescale
Sphenopholis obtusata
590. Saw Greenbrier
Smilax bona-nox
591. Canada Lettuce
Lactuca canadensis
592. Littleleaf Buttercup
Ranunculus abortivus
593. Canada Nettle
Laportea canadensis
594. Carolina Horsenettle
Solanum carolinense
595. Fall Panicgrass
Panicum dichotomiflorum
596. Bristly Greenbrier
Smilax tamnoides
597. Woolly Dutchman’s Pipe
Isotrema tomentosum
598. American Lopseed
Phryma leptostachya
599. Loomis’ Mountainmint
Pycnanthemum loomisii
600. Angularfruit Milkvine
Gonolobus suberosus
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