Annual bluegrass
(Poa annua): Grass family; winter annual; leaf tip
shaped like bow of a boat; membranous ligule rounded with
slightly pointed tip; leaf blade crinkled at midsection. |
Common chickweed
(Stellaria media): Pink family; winter annual; seed leaves with prominent
midveins, about 4 times longer than wide, tapering to point at tip; true leaves
broader, opposite, and yellow-green. |
Common groundsel
(Senecio vulgaris): Sunflower family; winter annual; seed leaves narrow,
with blunt narrow tip; first true leaves with shallow teeth; third and fourth
leaves more deeply lobed. |
Little mallow (cheeseweed)
(Malva parviflora): Mallow family; winter annual;
seed leaves heart shaped, sometimes with red tinge; true
leaves roundish with wavy, shallow-toothed margins. |
Prickly lettuce
(Lactuca serriola): Sunflower family; winter annual or biennial; seed
leaves about 2 times longer than wide; first true leaves with rounded margins. |
Shepherd's-purse
(Capsella bursa-pastoris): Mustard family; winter annual; seed leaves
pale green with tiny granules on surface; first true leaves with smooth margins;
fourth and later leaves may be indented; true leaves covered with star-shaped
hairs. |
