close up of the stems of poaceae grasses branch.

flag leaf culm node shealth collar ligule auricle poaceae stem cuyperaceae joint sedge bristle giant foxtail setaria sphacelata cogon grass panicum ageratum blackwell blade branch bunchgrass bush commelinids conyzoides cutgrass feather foliage green grow imperata invasive lallang lush nature panicgrass panicoideae plant shrub swithgrass turgidum vegetation virgatum weed wild macro