bladder sedge (Carex intumescens) Carex intumescens, also known as bladder sedge, is a species of Carex native to Canada and the eastern United States. Source: https://www.inaturalist.org/observations/113244932 Related By Wade Hi. I’m Wade Murray, and like everyone with a personal website, mine is horribly, terribly out of date. On the Internet my handle is normally wademurray, but you can still find blime in some of the older dustier places. View all of Wade's posts.