crabgrass, smooth

COMMON NAME: Crabgrass, smooth
SCIENTIFIC NAME: Digitaria ischaemum
FAMILY: Poaceae
LIFECYCLE: Annual
FEATURES: Growth habit: Prostrate growth habit. Spreading by lateral tillers that do not root at the nodes.
; Stem: Rounded and glabrous stems producing a single leaf at each node ; Leaf: .; Collar:
Membranous ligule that circles the stem. A few hairs often present at the collar region.;
Inflorescence: Three to six racemes terminating a stem. Normally at the apex of the stem, not
along the stem.
DESCRIPTION: A laterally growing summer annual grass. Common throughout all crops, horticultural and turfgrass
areas. One of the most recognizable weeds to homeowners. As the name notes, plant is generally
smooth in appearance except for numerous hairs around the collar region.

Broad View Smooth crabgrass in a bermudagrass lawn

Broad View
Smooth crabgrass in a bermudagrass lawn

Leaf Side angle view of stem

Leaf
Side angle view of stem

Additional Example of excavated plant

Additional
Example of excavated plant

Leaf Leaf characteristics

Leaf
Leaf characteristics

Flower / Seed Head Panicle with numerous racemes

Flower / Seed Head
Panicle with numerous racemes