Redroot Pigweed Amarathus retrojlexus L. A coarse, erect, branching annual 1.0 to 2.0 m tall with a red taproot and often reddish stem covered with hair. Leaves are alternate, dull green, diamond-shaped and sparsely hairy. Small, inconspicuous flowers are clustered in...

Low Cudweed Gnaphahum uhginosum L. A small, low-growing, much-branching, grey-green annual 10 to 20 cm tall. Leaves are alternate, narrow and hairy, but may be clustered at stem tips. Stems are often woolly. Flower heads are small and carried in clusters at the stem...

Low Cudweed Gnaphahum uhginosum L. A small, low-growing, much-branching, grey-green annual 10 to 20 cm tall. Leaves are alternate, narrow and hairy, but may be clustered at stem tips. Stems are often woolly. Flower heads are small and carried in clusters at the stem...

Low Cudweed Gnaphahum uhginosum L. A small, low-growing, much-branching, grey-green annual 10 to 20 cm tall. Leaves are alternate, narrow and hairy, but may be clustered at stem tips. Stems are often woolly. Flower heads are small and carried in clusters at the stem...

Lamb's Quarters Chenopodium album L. An erect, much-branched annual up to 1.5 m or more tall. First pairs of seedling leaves are opposite but others alternate with long stalks. Leaf shape is variable but usually triangular with coarsely toothed margins). New leaves...

Lamb's Quarters Chenopodium album L. An erect, much-branched annual up to 1.5 m or more tall. First pairs of seedling leaves are opposite but others alternate with long stalks. Leaf shape is variable but usually triangular with coarsely toothed margins). New leaves...

Lamb's Quarters Chenopodium album L. An erect, much-branched annual up to 1.5 m or more tall. First pairs of seedling leaves are opposite but others alternate with long stalks. Leaf shape is variable but usually triangular with coarsely toothed margins). New leaves...

Lamb's Quarters Chenopodium album L. An erect, much-branched annual up to 1.5 m or more tall. First pairs of seedling leaves are opposite but others alternate with long stalks. Leaf shape is variable but usually triangular with coarsely toothed margins). New leaves...

Hemp-Nettle Galeopsis tetrahit L. A coarsely hairy, erect, much-branched annual 30 to 80 cm tall with square stems that are usually swollen at the nodes. Leaves are oppo:lte with coarsely toothed margins and hairy upper surfaces. Flowers have a floral tube that is...

Hemp-Nettle Galeopsis tetrahit L. A coarsely hairy, erect, much-branched annual 30 to 80 cm tall with square stems that are usually swollen at the nodes. Leaves are oppo:lte with coarsely toothed margins and hairy upper surfaces. Flowers have a floral tube that is...

Hemp-Nettle Galeopsis tetrahit L. A coarsely hairy, erect, much-branched annual 30 to 80 cm tall with square stems that are usually swollen at the nodes. Leaves are oppo:lte with coarsely toothed margins and hairy upper surfaces. Flowers have a floral tube that is...

Hemp-Nettle Galeopsis tetrahit L. A coarsely hairy, erect, much-branched annual 30 to 80 cm tall with square stems that are usually swollen at the nodes. Leaves are oppo:lte with coarsely toothed margins and hairy upper surfaces. Flowers have a floral tube that is...

Hemp-Nettle Galeopsis tetrahit L. A coarsely hairy, erect, much-branched annual 30 to 80 cm tall with square stems that are usually swollen at the nodes. Leaves are oppo:lte with coarsely toothed margins and hairy upper surfaces. Flowers have a floral tube that is...

Cow Wheat Melampyrum lineare Desr. A small, erect, reddish annual with loosely branching stems generally <30 cm tall. Stems are square in cross section and slightly hairy . Upper leaves are long and narrow with one or two 'teeth' at the base. Flowers have a white...

Cow Wheat Melampyrum lineare Desr. A small, erect, reddish annual with loosely branching stems generally <30 cm tall. Stems are square in cross section and slightly hairy . Upper leaves are long and narrow with one or two 'teeth' at the base. Flowers have a white...