Common name: palmer amaranth Genus: Amaranthus Species ...
Common name: palmer amaranth Genus: Amaranthus Species ...
Common name: palmer amaranth Genus: Amaranthus Species ...
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<strong>Common</strong> <strong>name</strong>: <strong>palmer</strong> <strong>amaranth</strong><br />
<strong>Genus</strong>: <strong>Amaranthus</strong><br />
<strong>Species</strong>: <strong>palmer</strong>i<br />
Family: Amaranthaceae<br />
Summer annual<br />
•Alternate, glabrous leaves may be lance-shaped or<br />
egg-shaped with white venation on undersurface<br />
•Long petioles<br />
•May be confused with redroot pigweed, but redroot<br />
pigweed is monoecious<br />
•Smaller lateral inflorescences also occur between the<br />
stem and the leaf petioles.
<strong>Common</strong> <strong>name</strong>: spiny <strong>amaranth</strong><br />
<strong>Genus</strong>: <strong>Amaranthus</strong><br />
<strong>Species</strong>: spinosus<br />
Family: Amaranthaceae<br />
Summer annual<br />
•Alternate, glabrous leaves<br />
•Long petioles<br />
•pair of spines occurs at the base of most of the leaf<br />
petioles (some may not have them)
<strong>Common</strong> <strong>name</strong>: sicklepod<br />
<strong>Genus</strong>: Senna<br />
<strong>Species</strong>: obtusifolia<br />
Family: Fabaceae<br />
Summer annual<br />
•Alternate, glabrous, compound leaves<br />
•Usually 3 pairs of egg-shaped leaflets<br />
•Smells bad<br />
•Toxic foliage<br />
•Legume<br />
•Fruit cylindrical pod ----------------------------
<strong>Common</strong> <strong>name</strong>: pitted morningglory<br />
<strong>Genus</strong>: Ipomoea<br />
<strong>Species</strong>: lacunosa<br />
Family: Convolvulaceae<br />
annual<br />
•cotyledons are sharply indented, pointed, glabrous<br />
and may be green or purplish<br />
•Stems are highly branched and smooth to slightly<br />
hairy<br />
•Leaves are alternate and heart-shaped, tapering to a<br />
point; may be slightly hairy or smooth<br />
•long petioles.<br />
•Leaves may have purple margins.<br />
•Flowers are white, funnel-shaped
<strong>Common</strong> <strong>name</strong>: ivyleaf morningglory<br />
<strong>Genus</strong>: Ipomoea<br />
<strong>Species</strong>: hederacea<br />
Family: Convolvulaceae<br />
annual<br />
•Alternate, hairy leaves with 3 lobes – ivy shaped<br />
•Cotyledons notched at the apex, this notch forms an<br />
angle between the lobes that is less than 90 degrees<br />
•Stems also have erect hairs<br />
•Flowers bluish-purple, funnel-shaped (occasionally<br />
has white flowers)
<strong>Common</strong> <strong>name</strong>: red morningglory<br />
<strong>Genus</strong>: Ipomoea<br />
<strong>Species</strong>: coccinea<br />
Family: Convolvulaceae<br />
annual<br />
•Stems below the cotyledons often maroon and<br />
glabrous. Cotyledons are only somewhat indented or<br />
lobed, have rounded points, and are often tinted<br />
maroon, especially around the margin.<br />
•leaves that have several points along the basal<br />
margins, heart shaped, glabrous except few hairs at<br />
the base usually<br />
•Showy red flower, funnel-shaped
<strong>Common</strong> <strong>name</strong>: tall morningglory<br />
<strong>Genus</strong>: Ipomoea<br />
<strong>Species</strong>: purpurea<br />
Family: Convolvulaceae<br />
annual<br />
•Cotyledons are moderately indented<br />
•cotyledons of tall morningglory are usually more<br />
square in outline compared to the cotyledons of either<br />
ivyleaf or entireleaf morningglory<br />
•Heart-shaped, alternate leaves with hairs that lie<br />
appressed on the surface of the leaf<br />
•Purplish-blue to white flowers<br />
•Hairy stems
<strong>Common</strong> <strong>name</strong>: entireleaf morningglory<br />
<strong>Genus</strong>: Ipomoea<br />
<strong>Species</strong>: hederacea var. integriuscula<br />
Family: Convolvulaceae<br />
annual<br />
•Cotyledons have rounded points, are moderately<br />
indented and have hairs that stick straight out from<br />
the cotyledons<br />
•Alternate, heart-shaped leaves with hairs that stick<br />
straight out from the leaf (distinguish from tall mg)<br />
•Flowers purple, pale blue to white
<strong>Common</strong> <strong>name</strong>: bull thistle<br />
<strong>Genus</strong>: Cirsium<br />
<strong>Species</strong>: vulgare<br />
Family: Asteraceae<br />
Annual or biennial<br />
•Spines on the lobes of leaves<br />
•Deep margins on leaves<br />
•Leaves coarsely hairy on upperside with softer,<br />
whitish hairs in underside<br />
•Showy purple flower
<strong>Common</strong> <strong>name</strong>: hemp sesbania<br />
<strong>Genus</strong>: Sesbania<br />
<strong>Species</strong>: exaltata<br />
Family: Fabaceae<br />
annual<br />
•Leaves have 20-70 leaflets per individual leaf<br />
(pinnately compound)<br />
•Legume<br />
•Two to six individual flowers occur on elongated<br />
inflorescences with each flower occurring on a flower<br />
stalk (raceme). Each raceme arises from the area<br />
between the stem and leaf petioles. Flowers are<br />
yellow and may be streaked or spotted with purple.
<strong>Common</strong> <strong>name</strong>: velvetleaf<br />
<strong>Genus</strong>: Abutilon<br />
<strong>Species</strong>: theophrasti<br />
Family: Malvaceae<br />
annual<br />
•Alternate, heart-shaped leaves gradually taper to a<br />
point<br />
•Leaves are densley hairy on both surfaces, soft<br />
•Leaves emit a bad odor when crushed<br />
•May reach 7 ft in height<br />
•Yellowish-orange flower is also soft
<strong>Common</strong> <strong>name</strong>: showy crotalaria<br />
<strong>Genus</strong>: Crotalaria<br />
<strong>Species</strong>: spectabilis<br />
Family: Fabaceae<br />
Summer annual<br />
•Alternate leaves approximately 2 to 6 inches long<br />
• Leaves are without hairs on the upper surface and<br />
covered with appressed hairs on the lower surface<br />
•Leaves occur on short petioles<br />
•Legume<br />
•Bright yellow flowers
<strong>Common</strong> <strong>name</strong>: doveweed<br />
<strong>Genus</strong>: Murdannia<br />
<strong>Species</strong>: nudiflora<br />
Family: Commelinacaea<br />
annual<br />
•Resembles a grass<br />
•Roots at stem nodes<br />
•Primarily a turfgrass weed<br />
•Purple/blue flowers
<strong>Common</strong> <strong>name</strong>: spreading dayflower<br />
<strong>Genus</strong>: Commelina<br />
<strong>Species</strong>: diffusa<br />
Family: Commelinacaea<br />
annual<br />
•Roots from stem nodes (stolons)<br />
•Blue flowers last one day (hence the <strong>name</strong>)<br />
•Monocot<br />
•Grass-like plant<br />
•Leaves are bright green, alternate and<br />
hairless except on the sheath
<strong>Common</strong> <strong>name</strong>: indian mock-strawberry<br />
<strong>Genus</strong>: Duchesnea<br />
<strong>Species</strong>: indica<br />
Family: Roseaceae<br />
Perennial<br />
•Has stolons<br />
•Trifoliate (3 leaflets per leaf)<br />
•Leaflets are hairy with rounded teeth<br />
•Petioles are hairy<br />
•Similar to wild strawberry, but wild strawberry has<br />
white flowers and indian mock-strawberry has yellow<br />
flowers
<strong>Common</strong> <strong>name</strong>: wild radish<br />
<strong>Genus</strong>: Raphanus<br />
<strong>Species</strong>: raphanistrum<br />
Family: Brassicaceae<br />
Summer annual<br />
•Leaves initially occur as a basal rosette of deeply<br />
lobed leaves<br />
•Basal leaves are elliptic in outline, approximately 8<br />
inches long by 2 inches wide, and occur on petioles<br />
•Stem leaves are alternate, lanceolate in outline,<br />
without petioles, and with toothed margins<br />
•Mature stems erect, hairy and branching
<strong>Common</strong> <strong>name</strong>: spotted spurge<br />
<strong>Genus</strong>: Euphorbia (or Chamaesyce)<br />
<strong>Species</strong>: maculata<br />
Family: Euphorbiaceae<br />
annual<br />
•Prostrate growth habit<br />
•Dark green, opposite leaves usually marked<br />
with a red spot<br />
•Stem exudes a milky substance when broken<br />
•Tiny, pinkish flowers
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