Asclepias viridis Walt.的圖片
描述：
perennial in periodically mowed, grassy meadow-like highway right-of-way. Similar to A. aspera but single stemmed, erect habit shows adaptation to taller prairie grassland of southeastern Great Plains
perennial in periodically mowed, grassy meadow-like highway right-of-way. Similar to A. aspera but single stemmed, erect habit shows adaptation to taller prairie grassland of southeastern Great Plains
