1) Crab grass 2) Genus digitaria 3) Liliopsid genus 4) Monocot genus 
Digitaria is a genus of about 300 species of grass (family Poaceae) native to tropical and warm temperate regions. Common names include crabgrass, finger-grass, and fonio. They are slender monocotyledonous annual and perennial lawn, pasture, and forage plants; some are often considered lawn pests. Digitus is the Latin word for `finger`, and they.....
[n] - crab grass
digitaria Crab grass; finger grass.
genus Digitaria noun crab grass; finger grass