Hello David, It is a longitudinal depression along the mid-vein found in some leaves. If you could imagine taking a leaf and slicing it transversally, you will see that the cut forms a 'V' or sometimes a 'U'. Leaves of sedges are often channeled. Hope that helps. Nhu On Wed, Oct 29, 2008 at 2:21 PM, David Ehrlich <idavide@sbcglobal.net>wrote: > Hello all, > > In several places, including in this forum, I have seen the adjective > 'channeled', e.g. channeled leaves, channeled tepals, etc. I have looked > this word up in the glossaries of most of my plant books, but can't find > it. Perhaps I am dense, but I don't understand what it means. Could > someone in this forum please explain what this means? > > -- http://www.flickr.com/photos/xerantheum/