Idaho Noxious Weeds

Question	Answer
Image: Black Henbane (binary/octet-stream)	Black henbane Hyoscyamus niger Solanaceae Up to 4ft tall, conspicuous midrib on leaves
Image: Knotweed (binary/octet-stream)	Knotweed Polygonum spp. (AKA Fallopia spp.) Polygonaceae (Buckwheat family) 3-4 m at maturity
Image: Elodea (binary/octet-stream)	Brazilian elodea Egeria densa Hydrocharitaceae (waterweed family) Spiny leaves, white flowers
Image: Buffalobur 48 Buffalobur 02 (binary/octet-stream)	Buffalo-bur Solanum rostratum Solanaceae 2ft tall. Highly lobed leaves, many spines annual
Image: Cirsium Arvense (binary/octet-stream)	Canada thistle Cirsium arvense Astereaceae
Image: Crupina Vulgaris Nmk 15 (binary/octet-stream)	Common curpina Crupina vulgaris Asteracae winter annual, up to 4 ft, bristly edged leaves
Image: Hydrocharis2 (binary/octet-stream)	European frogbit Hydrocharis morsus-ranae Hydrocharitaceae (waterweed family) Emergent free-floating aquatic annual leaves 1-2 in wide
Image: Dalmatian Toadflax (binary/octet-stream)	Dalmatian toadflax Linaria dalmatica Scrophulariaceae (figwort family) Creeping perennial, up to 3ft high, taller with wider leaves than yellow toadflax
Image: Diffuse (binary/octet-stream)	Diffuse knapweed Centaurea diffusa Asteraceae Usually white, sometimes pink/lavender flowers, annual or biennial, 3ft tall
Image: Isatis Tinctoria369 (binary/octet-stream)	Dyer's woad Isatis tinctoria Brassicaceae Biennial up to 4ft high
Image: Fanwort (binary/octet-stream)	Fanwort Cabomba caroliniana Cabombaceae (water shields and fanworts) Aquatic perennial
Image: Azolla Pinnata 67ef83de Cead 494f Bad6 80c2f893742 Resize 750 (binary/octet-stream)	Feathered mosquito fern Azolla pinnata Azollaceae (mosquito fern family) Aquatic free floating annual
Image: Field Bindweed (binary/octet-stream)	Cield bindweed Convolvulus arvensis Convolvulaceae (morning glory family) One of the most noxious weed in ag. Perennial vine, can form dense mats
Image: Rush (binary/octet-stream)	Flowering rush Butomus umbellatus Butomaceae (flowering rush family) Lanceolate leaves, triangular in cross section, up to 40 in long
Image: Hogweed (binary/octet-stream)	Giant hogweed Heracleum mantegazzianum Apiaceae (carrot or parsley family) Biennial or perennial, up to 15 ft tall, purple blockhed stems similar to cow parsnip which lacks purple
Image: Giant Salvinia Index (binary/octet-stream)	Giant salvinia Salvinia molesta Salviniaceae (floating fern family) Free floating aquatic, feather-like roots, stiff hairs on upper leaf surface that resemble eggbeaters
Image: Berteroa Incana 1 (binary/octet-stream)	Hoary alyssum Berteroa incana Brassicaceae Annual or short lived perennial, multiple stems from base, up to 2ft tall, with grey-green star shaped hairs
Image: Hoary Cress In Flower (binary/octet-stream)	Hoary cress (whitetop) Cardaria draba Brassicaceae Creeping perennial up to 2 ft tall, alternate lanceate leaves, small 4 petaled flowers

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	Created by Paul Rhoades over 6 years ago