§ 45.21. Tentatively Undetermined.
Plant species classified as Tentatively Undetermined are as follows:
Scientific Name Common Name Agalinis obtusifolia Raf. False-Foxglove Amelanchier humilis Wiegand Low Serviceberry Amelanchier obovalis (Michx.) Ashe Coastal Juneberry Amelanchier sanguinea (Pursh) DC. Roundleaf Juneberry Andropogon glomeratus (Walter) Britton, Stearns & Poggenb. Bushy Bluestem Antennaria solitaria Rydb. Single-Headed Pussy-Toes Arabis hirsuta (L.) Scop. Western Hairy Rock-Cress Aristida dichotoma Michx. var. curtissii A. Gray Poverty Grass Aristida longespica Poir. var. geniculata (Raf.) Fernald Long-Spike Three-Awned Grass Aristolochia macrophylla Lam. Pipevine Carex crawfordii Fernald Crawford’s Sedge Carex haydenii Dewey Cloud Sedge Carex limosa L. Mud Sedge Carex meadii Dewey Mead’s Sedge Chasmanthium latifolium (Michx.) H. O. Yates Wild-Oats Chenopodium capitatum (L.) Asch. Strawberry Goosefoot Crataegus brainerdii Sarg. Brainerd’s Hawthorne Crataegus mollis (Torr. & A. Gray) Scheele Downy Hawthorne Cuscuta cephalanthi Engelm. Buttonbush Dodder Cuscuta polygonorum Engelm. Smartweed Dodder Cyperus tenuifolius (Steud.) Dandy Thin-Leaved Flatsedge Cystopteris laurentiana (Weath.) Blasdell Laurentian Bladder-Fern Desmodium glabellum (Michx.) Kuntze Tall Tick-Trefoil Desmodium nuttallii (Schindl.) Schub. Nuttall’s Tick-Trefoil Dichanthelium annulum (Ashe) LeBlond Annulus Panic Grass Dichanthelium boreale (Nash) Freckmann Northern Panic Grass Dichanthelium commonsianum (Ashe) Freckmann Cloaked Panic Grass Dichanthelium lucidum (Ashe) LeBlond Shining Panic Grass Dichanthelium villosissimum (Nash) Freckmann Long-Haired Panic Grass Dichanthelium yadkinense (Ashe) Mohlenbr. Yadkin River Panic Grass Dracocephalum parviflorum Nutt. American Dragonhead Epilobium palustre L. Marsh Willow-Herb Eupatorium rotundifolium L. Round-Leaved Thoroughwort Filipendula rubra (Hill) B. L. Rob. Queen-of-the-Prairie Gentiana alba Muhl. ex Nutt. Yellow Gentian Gentiana saponaria L. Soapwort Gentian Gentiana villosa L. Striped Gentian Glyceria acutiflora Torr. Sharp-Flowered Manna-Grass Gymnocarpium appalachianum K. M. Pryer & Haufler Appalachian Oak Fern Houstonia purpurea L. var. purpurea Purple Bluets Hypericum drummondii (Grev. & Hook) Torr. & A. Gray Nits-and-Lice Lathyrus palustris L. Vetchling Lemna turionifera Landolt Winter Duckweed Leucothoe racemosa (L.) A. Gray Swamp Dog-Hobble Liatris scariosa (L.) Willd. Northern Blazing-Star Lonicera hirsuta Eaton Hairy Honeysuckle Luzula bulbosa (A. W. Wood) Rybd. Wood-Rush Malaxis monophyllos (L.) Swartz var. brachypoda (A. Gray) F. Morris & E. A. Eames White Adder’s-Mouth Meehania cordata (Nutt.) Britton Heart-Leafed Meehania Muhlenbergia cuspidata (Torr.) Rydb. Sharp-Pointed Muhly Nuphar microphylla (Pers.) Fernald Small Yellow Pond-Lily Oenothera pilosella Raf. Evening-Primrose Oxypolis rigidior (L.) Raf. Stiff Cowbane Packera plattensis (Nutt.) W. A. Weber & Á Löve Prairie Ragwort Panicum flexile (Gatt.) Scribn. Wiry Witchgrass Panicum longifolium Torr. Long-Leaved Panic Grass Paronychia fastigiata (Raf.) Fernald var. nuttallii (Small) Fernald Whitlow Wort Parthenium intergrifolium L. American Fever-Few Paspalum floridanum (Michx.) var. glabratum Engelm. ex Vasey Florida Beadgrass Paspalum laeve (Michx.) var. pilosum Scribn. Field Beadgrass Paspalum setaceum Michx. Slender Beadgrass Phlox pilosa L. Downy Phlox Phyla lanceolata (Michx.) Greene Lance Fog-Fruit Physalis virginiana Mill. Virginia Ground-Cherry Platanthera hookeri (Torr. ex Gray) Lindl. Hooker’s Orchid Pluchea odorata (L.) Cass. Shrubby Camphor-Weed Poa languida A. Hitchc. Drooping Bluegrass Podostemum ceratophyllum Michx. Riverweed Polygala polygama Walter Racemed Milkwort Polygonella articulata (L.) Meisn. Eastern Jointweed Polygonum amphibium L. var. stipulaceum (Coleman) Fern. Stipuled Water-Smartweed Polygonum ramosissimum Michx. Bushy Knotweed Potamogeton filiformis Pers. var. borealis (Raf.) St. John Slender Pondweed Potamogeton oakesianus J. W. Robbins Oakes’ Pondweed Potamogeton perfoliatus L. Clasping-Stemmed Pondweed Pycnanthemum verticillatum (Michx.) Pers. var. pilosum (Nutt.) Cooperr. Hairy Mountain-Mint Ranunculus aquatilis L. var. diffusus With. White Water-Crowfoot Ranunculus flammula L. Lesser Spearwort Rhamnus alnifolia L’ Hér Alder-Leaved Buckthorn Rhynchospora recognita (Gale) Kral Small Globe Beak-Rush Ribes lacustre (Pers.) Poir. Swamp Currant Rosa virginiana P. Mill. Virginia Rose Rubus setosus Bigelow Small Bristleberry Rumex hastatulus Baldwin ex Elliott Heart Sorrell Samolus parviflorus Raf. Pineland Pimpernel Saxifraga micranthidifolia (Haw.) Steud. Lettuce Saxifrage Scleria triglomerata Michx. Whip Nut-Rush Scutellaria saxatilis Riddell Rock Skullcap Senna marilandica (L.) Link Wild Senna Sisyrinchium albidum Raf. Blue-Eyed-Grass Solidago rigida L. Hard-Leaved Goldenrod Spiranthes tuberosa Raf. Slender Ladies’-Tresses Stachys hyssopifolia Michx. Hyssop Hedge-Nettle Stylosanthes biflora (L.) Britton, Stearns & Poggenb. Pencil-Flower Symphyotrichum dumosum (L.) Nesom Bushy Aster Symphyotrichum ericoides (L.) Nesom White Heath Aster Taxus canadensis Marsh. American Yew Trillium flexipes Raf. Declined Trillium Triosteum angustifolium L. Horse Gentian Tripsacum dactyloides (L.) L. Eastern Gammagrass Uvularia pudica Michx. Mountain Bellwort Viburnum trilobum Marshall Highbush-Cranberry Viola renifolia A. Gray Kidney-Leaved Violet Vitis cinerea (Englem. in A. Gray) Englem. ex Millardet var. baileyana (Munson) Comeaux Possum-Grape Wolffia borealis (Engelm.) Landolt Dotted Dotted Watermeal
Authority The provisions of this § 45.21 amended under section 7 of the Wild Resource Conservation Act (32 P.S. § 5307); and sections 305(a)(9) and 313(g) of the Conservation and Natural Resources Act (71 P.S. § § 1340.305(a)(9) and 1340.313(g)).
Source The provisions of this § 45.21 adopted December 4, 1987, effective January 1, 1988, 17 Pa.B. 5027; amended June 18, 1993, effective June 19, 1993, 23 Pa.B. 2816; amended December 21, 2018, effective December 22, 2018, 48 Pa.B. 7757; amended September 22, 2023, effective September 23, 2023, 53 Pa.B. 5892. Immediately preceding text appears at serial pages (394753) to (394758).
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