Names link to more information on identification and biology.
Click on photos to enlarge
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. |
Whitestem filaree
(Erodium moschatum): Geranium family; winter annual
or biennial; seed leaves 3- to 4-lobed, center lobe largest;
true leaves arranged as opposite or alternate; leaves and
stems bristly and hairy. |
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. |
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. |
Common groundsel
(Senecio vulgaris): Sunflower family; winter annual, but seedlings can
be present anytime at cool, moist locations; seed leaves narrow, with blunt narrow
tip; first true leaves with shallow teeth; third and fourth leaves more deeply
lobed. |
Common sowthistle
(Sonchus oleraceus): Sunflower family; summer annual;
seed leaves markedly stalked, almost spoon-shaped, rounded
at tip and often have grayish powdery bloom. |
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. |
Italian ryegrass
(Lolium multiflorum): Grass family; winter annual; first blade erect, long, and narrow; leaves
rolled in bud, blades with shiny, varnished appearance; ligule membranous; usually auricles present,
but sometimes absent on very young seedlings. |
|
