Alberta Invasive Plant Identification Guide

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http://en.academic.ru/pictures/enwiki/67/Centaurea_02_bgiu.jpg Knapweed, Tyrol Centaurea nigrescens, Asteraceae (Sunflower Family) Category: Prohibited Noxious • Information: Native to Europe, larger leaf than the other knapweeds, weed of disturbed areas. • Life Cycle: Perennial. • Root: Taproot. • Leaves: Entire, smooth edge, large. • Stems: 30-150cm, erect, branching. • Flower: Pink-purple, bracts present (dark brown-black). • Seed/Fruits: Reproduces by seed. • Toxicity: • Control: Long term, hand pick, chemical. 36 http://www.nearctica.com/flowers/composit/thistle/centaur/Cnigres.htm
Knotweed Complex Fallopia spp./ Polygonum, Polygonaceae (Knotweed Family) Category: Prohibited Noxious Knotweed, Giant — Fallopia sachalinensis knotweed, hybrid Japanese — Fallopia x bohemica knotweed, Japanese — Fallopia japonica Life Cycle: Herbaceous perennial. Root: Rhizomatous. Leaves: Alternate, stalked, broadly oval to triangular and pointed at the tip. Giant knotweed leaves are 30cm or longer and 2/3 as wide. Japanese knotweed leaves are 15cm long by 7-10cm wide. Himalayan knotweed leaves are 10-20cm long with tapered and elongated tips, basal leaves slightly heart-shaped, and often with soft hairs on veins, margins and lower surfaces. Stems: Hollow, smooth, weakly woody, jointed, swollen at nodes, 3.5m or taller, base surrounded by membranous sheath. Flower: Small greenish white flowers in sprays at branch tip. Japanese knotweed inflorescence is larger than that of giant knotweed; the flowers are prominently winged, and their size increases significantly with age. Seed/Fruit: Black with ribs. Toxic: Horses, cattle, goats. 37
Page 1 and 2: Alberta Invasive Plant Identificati
Page 3 and 4: Alberta Invasive Plant Identificati
Page 5 and 6: Alberta Weed Control Act Legislatio
Page 7 and 8: White Flowers Scentless Chamomile P
Page 9 and 10: Yellow Flowers Hawkweed spp. Pg. 24
Page 11 and 12: Prohibited Noxious Weeds Prohibited
Page 13 and 14: Balsam, Himalayan Impatiens glandul
Page 15 and 16: http://commons.wikimedia.org/wiki/F
Page 17 and 18: Montana State University Invasive P
Page 21 and 22: Flowering Rush Butomus umbellatus,
Page 23 and 24: USDA APHIS PPQ Archive, USDA APHIS
Page 25 and 26: Michael Shephard, USDA Forest Servi
Page 27 and 28: Donna R. Ellis, University of Conne
Page 29 and 30: Knapweed, Bighead Centaurea macroce
Page 35: knapweed, Squarrose Centaurea virga
Page 39 and 40: Steve Dewey, Utah State University,
Page 41 and 42: Puncturevine Tribulus terrestris, Z
Page 43 and 44: Rush Skeletonweed Chondrilla juncea
Page 45 and 46: Saltlover Halogeton glomeratus, Che
Page 47 and 48: Starthistle, Yellow Centaurea solst
Page 49 and 50: Thistle, Nodding Carduus nutans, As
Page 51 and 52: Noxious Weeds Noxious Weeds have th
Page 53 and 54: Bellflower, Creeping Campanula rapu
Page 55 and 56: Blueweed Echium vulgare, Boraginace
Page 57 and 58: Brome, Japanese Bromus japonicas, P
Page 59 and 60: Buttercup, Tall Ranunculus acris, R
Page 61 and 62: Clematis, Yellow Clematis tangutica
Page 63 and 64: Oxeye Daisy Leucanthemum vulgare, A
Page 65 and 66: Henbane, Black Hyoscyamus niger, So
Page 67 and 68: Hound’s‑Tongue Cynoglossum offi
Page 69 and 70: Life cycle: Perennial. Root: Deep
Page 71 and 72: Sow thistle, Perennial Sonchus arve
Page 73 and 74: Tansy, Common Tanacetum vulgare, As
Page 75 and 76: Toadflax, Dalmatian Linaria dalmati
Page 77 and 78: Glossary adventitious roots Roots a
Page 79 and 80: Weed Websites Alberta Invasive Plan
Page 81: Produced by Wheatland County For mo

Alberta Invasive Plant Identification Guide

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