eryngium yuccifolium. close up of a rattlesnake master, button eryngo.

america angiosperm angiospermae apiaceae background bed biological bloom blooming blue bombus botanical bumblebee button close closeup eryngium eryngo floral flower for garden gardening gathering grass green herb herbaceous insect janesville macro master meadow medicine nature nectar outdoors perennial plant pollination rattlesnake root snake snakeroot thorn usa wildflower wildlife wisconsin yuccifolium