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

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Frangula alnus Glossy buckthorn FRAL4 European alder Alder buckthorn Form: Understory shrub/tree up to 23 ft (7 m) tall; often with multiple stems at the base. Leaves: With several pectinate lateral veins; margins mostly entire (sometimes with some marginal glands); mostly alternate, 1-3 in. (2.5 -7.5 cm) long, usually more than half as wide as long. Leaves stay green well into autumn. Flowers/fruit: Flowers bisexual, unlike most relatives; sepals, petals, and stamens 5; pale yellow. Fruit red to black with 2-3 seeds. Habitat: Wetlands including acidic bogs, calcareous fens, and sedge meadows. Also does well in upland habitats. Can tolerate full sun to deep shade. Other distinguishing features/notes: Bark is brown with silvery, slightly “corky” lenticels that make it resemble native cherries or plums. Cutting a branch will expose yellow sapwood and orange heartwood. Similar to Carolina buckthorn (Rhamnus caroliniana) except not as tall. R. caroliniana can get as tall as 39 ft (12 m). Winter/early spring ID tip: Buds are naked (common buckthorn and alderleaf buckthorn have scaly buds). Carolina buckthorn also has naked buds, but Carolina buckthorn is taller than glossy buckthorn. Notes
© John M. Randall, The Nature Conservancy Elizabeth Czarapata Frangula alnus Glossy buckthorn European alder Alder buckthorn Elizabeth Czarapata Kelly Kearns, Wisconsin DNR
Page 1 and 2:
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 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
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: Frangula alnus Glossy buckthorn FRA
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
Page 73 and 74: Lonicera x bella Showy fly honeysuc
Page 75 and 76: Lonicera maackii Amur honeysuckle L
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 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 117 and 118:
James H. Miller, U.S. Forest Servic
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 and 132:
Cirsium arvense Canada thistle CIAR
Page 133 and 134:
Chris Evans, University of Georgia,
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
Page 185 and 186:
Descriptive Flower Shapes Shape Nam
Page 187 and 188:
Cruciform (Cross-shaped) A flower w
Page 189 and 190:
Appendix C Key to the species Lonic
Page 191 and 192:
Appendix E Key to the species Berbe
Page 193 and 194:
Appendix G Key to the species Elaea
Page 195 and 196:
Discoid - In the Asteraceae, with a
Page 197:
Olson Cassandra; Cholewa, Anita F.
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