andreyefremov 的最愛

@lysandra @lallen

Sorry to bother you both with questions lately but I’m stumped on this aquatic plant. Clearly Elodea, but leaves 16-18mm, all whorls of 3 including upper leaves (except for a side branch, which had all opposite leaves: images 8 and 9). Leaves 0.8-1.2mm wide, obviously thinner than E. canadensis and much more tapered tip than in canadensis. I’m uncertain between E. nuttallii and bifoliata. Found floating in the North Saskatchewan NE (downstream) of Edmonton.

I looked at it under a microscope and there are extremely tiny teeth, apparently 1 celled, spaced out along the margins. Couldn’t get a decent photo of these tiny teeth. Any insights would be appreciated.