A guide to nonnative invasive plants inventoried in the north by ...

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Cirsium arvense Canada thistle CIAR4 Form: Dioecious perennial 1-4 ft (0.3-1.2 m) tall; plant nearly glabrous to sparsely hairy. Deep-seated creeping roots. Leaves: Alternate with a basal rosette, oblong, and irregularly lobed with very prickly margins. Green on both sides, glabrous to pubescent underneath. Stems ridged and hairy. Flowers/fruit: Purple to occasionally white; heads up to ½ in. (1.3 cm) in diameter, discoid, and 1 in. (2.5 cm) or less high. Fruit is an achene ⅛-½ in. (2.5-4 mm) long with a feathery pappus attached to the apex (which lets it float through the air). Habitat: Open habitats including prairies, savannas, fields, pastures, wet meadows, and open forests. Notes
Chris Evans, University of Georgia, www.forestryimages.org Chris Evans, University of Georgia, www.forestryimages.org Cirsium arvense Canada thistle Mary Ellen (Mel) Harte, www.forestryimages.org Chris Evans, University of Georgia, www.forestryimages.org
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United States Department of Agricul
Page 3 and 4:
A Guide to Nonnative Invasive Plant
Page 5 and 6:
Tree Species Contents Acer platanoi
Page 7 and 8:
Acer platanoides Norway maple ACPL
Page 9 and 10:
Paul Wray, Iowa State University, w
Page 11 and 12:
Ailanthus altissima Tree-of-heaven
Page 13 and 14:
Barbara Tokarska-Guzik, University
Page 15 and 16:
Albizia julibrissin Silktree ALJU J
Page 17 and 18:
James H. Miller, U.S. Forest Servic
Page 19 and 20:
Elaeagnus angustifolia Russian oliv
Page 21 and 22:
Page 23 and 24:
Melaleuca quinquenervia Punktree ME
Page 25 and 26:
Amy Ferritar, South Florida Water M
Page 27 and 28:
Melia azedarach Chinaberry MEAZ Jam
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Page 31 and 32:
Paulownia tomentosa Princesstree PA
Page 33 and 34:
James Allison, Georgia Department o
Page 35 and 36:
Robinia pseudoacacia Black locust R
Page 37 and 38:
Elizabeth Czarapata Robinia pseudoa
Page 39 and 40:
Tamarix ramosissima Saltcedar TARA
Page 41 and 42:
Steve Dewey, Utah State University,
Page 43 and 44:
Triadica sebifera Tallow tree TRSE6
Page 45 and 46:
Chris Evans, University of Georgia,
Page 47 and 48:
Ulmus pumila Siberian elm ULPU Stev
Page 49 and 50:
Patrick Breen, Oregon State Univers
Page 51 and 52:
Berberis thunbergii Japanese barber
Page 53 and 54:
Berberis thunbergii Japanese barber
Page 55 and 56:
Berberis vulgaris Common barberry B
Page 57 and 58:
Leslie J. Mehrhoff, University of C
Page 59 and 60:
Elaeagnus umbellata Autumn olive EL
Page 61 and 62:
Chris Evans, University of Georgia,
Page 63 and 64:
Frangula alnus Glossy buckthorn FRA
Page 65 and 66:
© John M. Randall, The Nature Cons
Page 67 and 68:
Ligustrum vulgare European privet L
Page 69 and 70:
Kelly Kearns, Wisconsin DNR Ligustr
Page 71 and 72:
Lonicera x bella Showy fly honeysuc
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Lonicera x bella Showy fly honeysuc
Page 75 and 76:
Lonicera maackii Amur honeysuckle L
Page 77 and 78:
Page 79 and 80:
Lonicera morrowii Morrow’s honeys
Page 81 and 82: © John M. Randall, The Nature Cons
Page 83 and 84: Lonicera tatarica Tatarian honeysuc
Page 85 and 86: Patrick Breen, Oregon State Univers
Page 87 and 88: Rhamnus cathartica Common buckthorn
Page 89 and 90: Elizabeth Czarapata Leslie J. Mehrh
Page 91 and 92: Rosa multiflora Multiflora rose ROM
Page 93 and 94: James H. Miller, U.S. Forest Servic
Page 95 and 96: Spiraea japonica Japanese meadowswe
Page 99 and 100: Viburnum opulus European cranberryb
Page 101 and 102: Viburnum opulus European cranberryb
Page 103 and 104: Celastrus orbiculatus Asian bitters
Page 105 and 106: Celastrus orbiculatus Asian bitters
Page 107 and 108: Cynanchum louiseae (Syn.: Vincetoxi
Page 109 and 110: Kelly Kearns, Wisconsin DNR Cynanch
Page 111 and 112: Cynanchum rossicum (Syn.: Vincetoxi
Page 113 and 114: © John M. Randall, The Nature Cons
Page 115 and 116: Hedera helix English ivy HEHE David
Page 119 and 120: Lonicera japonica Japanese honeysuc
Page 121 and 122: Chuck Bargeron, University of Georg
Page 123 and 124: Alliaria petiolata Garlic mustard A
Page 125 and 126: Alliaria petiolata Garlic mustard E
Page 127 and 128: Centaurea biebersteinii Spotted kna
Page 129 and 130: Elizabeth Czarapata Elizabeth Czara
Page 131: Cirsium arvense Canada thistle CIAR
Page 135 and 136: Cirsium vulgare Bull thistle CIVU E
Page 137 and 138: Utah State University Archives, www
Page 139 and 140: Euphorbia esula Leafy spurge EUES W
Page 141 and 142: Elizabeth Czarapata Euphorbia esula
Page 143 and 144: Hesperis matronalis Dame’s rocket
Page 145 and 146: Kelly Kearns, Wisconsin DNR Kelly K
Page 147 and 148: Lysimachia nummularia Creeping jenn
Page 149 and 150: Lysimachia nummularia Creeping jenn
Page 151 and 152: Lythrum salicaria Purple loosestrif
Page 153 and 154: Steve Dewey, Utah State University,
Page 155 and 156: Polygonum cuspidatum Japanese knotw
Page 157 and 158: Elizabeth Czarapata Jil M. Swearing
Page 159 and 160: Polygonum sachalinense Giant knotwe
Page 161 and 162: Ben Legler, The Burke Museum of Nat
Page 163 and 164: Polygonum x bohemicum Bohemian knot
Page 165 and 166: Ben Legler, The Burke Museum of Nat
Page 167 and 168: Microstegium vimineum Nepalese brow
Page 169 and 170: Elizabeth Czarapata Elizabeth Czara
Page 171 and 172: Phalaris arundinacea Reed canary gr
Page 173 and 174: Elizabeth Czarapata Phalaris arundi
Page 175 and 176: Phragmites australis Common reed PH
Page 177 and 178: Phragmites australis Common reed Ph
Page 179 and 180: References Flora of North America E
Page 181 and 182: Appendix A Leaf and inflorescence m
Page 183 and 184:
Cyme A Cyme is a group of flowers i
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Descriptive Flower Shapes Shape Nam
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Cruciform (Cross-shaped) A flower w
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Appendix C Key to the species Lonic
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Appendix E Key to the species Berbe
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Appendix G Key to the species Elaea
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Discoid - In the Asteraceae, with a
Page 197:
Olson Cassandra; Cholewa, Anita F.
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