Flashcards
Agron 217 Exam 1
Cards in this deck (37)
- 1—Asiatic Dayflower
(Annual)
Key ID: glossy leaves with parallel veins
Sheath wraps around the stem - 2—Yellow Nutsedge
(Perennial)
Key ID: Triangular stem, leaves at 120 degrees, glossy grass-like leaves
- 3—Wild Garlic
(Perennial)
Key ID: Round hollow leaves, aerial bulblets, garlic/oniony smell
- 4—Giant Foxtail
(Annual)
Family: Poaceae
Key ID: Hairy ligule, dense hairs on upper leaf surface
- 5—Yellow Foxtail
(Annual)
Family: Poaceae
Key ID: Hairy ligule, long hairs at base of leaf blade, then hairless
- 6—Green Foxtail
(Annual)
Family: Poaceae
Key ID: Hairy ligule, no hair on the upper leaf, the margin of the leaf has hairs
- 7—Woolly Cupgrass
(Annual)
Family: Poaceae
Key ID: First leaf parallel to soil, obtuse angle of leaves, one margin on the leaf rippled
- 8—Witchgrass
(Annual)
Family: Poaceae
Key ID: Leef sheath covered in dense stiff hairs, hairy on leaves both sides, broom head
- 9—Fall Panicum
(Annual)
Family: Poaceae
Key ID: Hairy ligule, glabrous leaf sheath, and blade, swollen nodes, light-colored midrib compared to green foxtail
- 10—Shattercane
(Annual)
Family: Poaceae
Key ID: Membranous ligule, leaf sheaths waxy, looks like corn
- 11—Barnyardgrass
(Annual)
Family: Poaceae
Key ID: Lack of ligule, hairless stem and sheath
- 12—Large Crabgrass
(Annual)
Family: Poaceae
Key ID: Membranous ligule, stiff hairs on blade and sheath
- 13—Goosegrass
(Annual)
Family: Poaceae
Key ID: Membranous ligule, flat stem, tillers are parallel to soil, white/silver at center
- 14—Downy Brome
(Annual)
Family: Poaceae
Key ID: Dense soft hair on leaf and stem, fused sheath (no overlap), twisted leaves
- 15—Longspine Sandbur
(Annual)
Family: Poaceae
Key ID: Leaves folded makes flat stem, hairy ligule
- 16—Annual Bluegrass
(Annual/Perennial)
Family: Poaceae
Key ID: Membranous ligule, leaf tips like a boat, light green, GH had crinkle
- 17—Foxtail Barley
(Perennial)
Family: Poaceae
Key ID: short membranous ligule, smooth sheaths and blades, bunch grass
- 18—Quackgrass
(Perennial)
Family: Poaceae
Key ID: Clasping auricles, membranous ligule, long internodes
- 19—Reed Canarygrass
(Perennial)
Family: Poaceae
Key ID: Tall stems, transparent ligule, rough leaf edges can cut, hairless
- 20—Nimblewill
(Perennial)
Family: Poaceae
Key ID: Short very narrow leaves, membranous ligules, distinct patches in lawns
- 21—Poison Hemlock
(Biennial)
Family: Apiaceae
Key ID: Hairless stem with purple spots, waxy bloom, dark green, compund leaf triangular
- 22—Wild Carrot
(Biennial)
Family: Apiaceae
Key ID: Leaves pinnate, lacy, stems hollow and hairy ribbed, single pruple flower in umbel, birds nest
- 23—WIld Parsnip
(Biennial)
Family: Apiaceae
Key ID: egg shaped leaflets, toothed margins, stem hollow and grooved, yellow umbel
- 24—Common Milkweed
(Perennial)
Family: Apocynaceae
Key ID: Erect stem, oblong leaves, milky sap, looks misty
- 25—Hemp Dogbane
(Perennial)
Family: Apocynaceae
Key ID: Opposite leaves, long stem, upper stem branched, ovate leaves 2"-3"
- 26—Poison Ivy
(Perennial)
Key ID: Leaves with three leaflets, irregular lobes, aerial roots
- 27—Common Lambsquarters
(Annual)
Family: Amaranthaceae
Key ID: Grayish leaves, irregular toothed leaves, white meely young leaves
- 28—Russian Thistle
(Annual)
Family: Amaranthaceae
Key ID: Bushy, needle-like leaves, ball-shaped when mature, "tumbleweed."
- 29—Kochia
(Annual)
Family: Amaranthaceae
Key ID: Alternate leaves hairy, often three prominent midveins, stems are round and redish
- 30—Waterhemp
(Annual)
Family: Amaranthaceae
Key ID: Hairless stems, glossy leaves, egg shaped coyledons
- 31—Palmer Amaranth
(Annual)
Family: Amaranthaceae
Key ID: Flatter leaves, long petioles, few or no hairs, more V-shaped
- 32—Redroot Pigweed
(Annual)
Family: Amaranthaceae
Key ID: Hairy stems, egg shaped leaves and red underside, wavy leaf margins, notched first leaf
- 33—Scouring Rush
(Perennial)
Key ID: segmented stems, pull apart at nodes, nodes have a gray band
- 34—Field Horsetail
(Perennial)
Key ID: Wiry, segmented stem, whorled branched modified leaves
- 35—Smilax
(Perennial)
Key ID: Parallel leaf veins, woody vine, spikey
- 36—Japanese Stiltgrass
(Annual)
Family: Poaceae
Key ID: Wide leaf comapred to grasses, lance shaped leaves, silver midvein
- 37—Honeyvine Milkweed
(Perennial)
Family: Apocynaceae
Key ID: Oppositely arranged leaves, white veins, heart shaped leaves
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- Agronomy Flashcards on Agron 217 Exam 1, created by Rebekah Muench on 30/03/2021.
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- Rebekah Muench
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