Maryland Native Plant Society Plant Lists We offer these lists to individuals and groups to enhance the enjoyment and study of plants of different locations in Maryland and nearby states. Their accuracy has not been verified by the Maryland Native Plant Society. NOLANDS FERRY, C&O CANAL NATIONAL HISTORICAL PARK, FREDERICK COUNTY, MD This list records plants seen during a field trip to historic Nolands Ferry (mile 44) of the C&O Canal on September 27, 2009. Field trip led by Dwight and Kirsten Johnson. Plant list by Kirsten Johnson. Nomenclature follows the USDA Plant Database at http://plants.usda.gov (January 2012). Synonyms are footnoted for some species. Acalypha rhomboidea Three-seeded mercury Euphorbiaceae Acer negundo Boxelder Aceraceae Acer rubrum Red maple Aceraceae Acer saccharinum Silver maple Aceraceae Ageratina altissima1 White snakeroot Asteraceae Ailanthus altissima Ailanthus Simaroubaceae Alliaria petiolata Garlic mustard Brassicaceae Ambrosia artemisiifolia Common ragweed Asteraceae Ambrosia trifida Giant ragweed Asteraceae Artemisia annua Annual wormwood Asteraceae Asimina triloba Pawpaw Annonaceae Bidens aristosa2 Tickseed sunflower Asteraceae Boehmeria cylindrica False wood nettle Urticaceae Carya cordiformis Bitternut hickory Juglandaceae Carya glabra Pignut hickory Juglandaceae Celtis occidentalis Hackberry Ulmaceae Chamaecrista fasciculata3 Partridge pea Fabaceae Conoclinium coelestinum4 Mistflower Asteraceae Conyza canadensis Horseweed Asteraceae Datura stramonium Jimsonweed Solanaceae Erigeron strigosus Lesser daisy fleabane Asteraceae Eupatoriadelphus fistulosus5 Joe Pye weed Asteraceae Eupatorium serotinum Late-flowering boneset Asteraceae Fraxinus pennsylvanica Green ash Oleaceae Helianthus decapetalus Thin-leaved sunflower Asteraceae Helianthus tuberosus Jerusalem artichoke Asteraceae Humulus japonicus Japanese hop Cannabaceae Hydrophyllum sp. Waterleaf Hydrophyllaceae Impatiens pallida Pale jewelweed Balsaminaceae Juglans nigra Black walnut Juglandaceae Laportea canadensis Wood nettle Urticaceae Lindera benzoin Spicebush Lauraceae Lobelia cardinalis Cardinal flower Campanulaceae Lobelia siphilitica Great blue lobelia Campanulaceae Microstegium vimineum Japanese stiltgrass Poaceae Morus alba White mulberry Moraceae Nepeta cataria Catnip Lamiaceae Parthenocissus quinquefolia Virginia creeper Vitaceae Perilla frutescens Beefsteak plant Lamiaceae Phlox paniculata Garden phlox Polemoniaceae Physalis heterophylla Clammy ground-cherry Solanaceae Pilea pumila Clearweed Urticaceae Platanus occidentalis Sycamore Platanaceae Polygonum virginianum6 Jumpseed Polygonaceae Populus deltoides Cottonwood Salicaceae Quercus shumardii Shumard’s oak Fagaceae Rudbeckia laciniata Yellow coneflower Asteraceae Sicyos angulatus Bur-cucumber Cucurbitaceae Smilax rotundifolia Greenbrier Smilacaceae Solidago canadensis Canada goldenrod Asteraceae Solidago flexicaulis Zig-zag goldenrod Asteraceae Solidago gigantea Late goldenrod Asteraceae Staphylea trifolia Bladdernut Staphyleaceae Symphyotrichum cordifolium7 Heart-leaved aster Asteraceae Symphyotrichum lateriflorum8 Calico aster Asteraceae Teucrium canadense Wood sage Lamiaceae Toxicodendron radicans Poison ivy Anacardiaceae Urtica dioica Stinging nettle Urticaceae Verbesina alternifolia9 Wingstem Asteraceae Vernonia noveboracensis New York ironweed Asteraceae 1 Eupatorium rugosum 2 Bidens polylepis 3 Cassia fasciculata 4 Eupatorium coelestinum 5 Eupatorium fistulosum 6 Tovara virginiana 7 Aster cordifolius 8 Aster lateriflorus 9 Actinomeris alternifolia .