Acorus calamus gramineus Aeschynomene fluitans Aldrovanda vesiculosa Alisma plantago-aquatica While this plant looks like a 'radicans' sword plant (Echinodorus cordifolius)it is not... it's an Alisma. E. cordifolius has a Southernly range, and while it is found in the North, only in the USA and not at all here in Canada. As long as I can remember though, aquarists here in Ontario Canada have talked about E. cordifolius growing in Hastings county. Range of E. cordifolius in North America. While E. cordifolius does indeed grow in the USA, it's range is restricted to the southern Mississippi drainage, the Eastern seaboard, and spotty locations in Florida. The northernmost limit is the north of Iowa and Illinois. (ref) but has never been found in Canada. When I was a kid I kept hearing that there were 'radicans' sword plant growing in "around Trenton". I actually moved near to there around 1997 (butin a different town than Trenton) and a few years later did indeed see what looked like E. cordifolius growing in the sand at the public beach at Stoco Lake in village of Tweed, in the spring. When it flowered in mid summer, it was obvious that it was Alisma plantago-aquatia and not E. cordifolius. The photo is of the plant I found on the shore of Stoco lake. I have never seen it growing in any other body of water in Hastings county, but by no means have I seen all bodies of water there! Sword plants are in the genus Echinodorus. in the family Alismatida The "radican' sord, that used to be E. radicans is now properly E. cordifolius. Aquarissts still sometimes refer to E. cordifolius as a "radican sword", despite the name change half a century ago. That's what common names are for!the name is now E. cordifolius. Althenia australis orientalis bilocularis cylindrocarpa filiformis marina patentifolia preissii Fresh and marine water bog and swamp plants. Alternanthera aquatica Massive bettzickiana Hard ficoidea reinecki Good sessilis Ammannia aegyptiaca alternifolia auriculata baccifera coccinea crassicaulis desertorum elata gracilus latifolia linearipetala microcarpa multiflora myriophylloides nagpurensis octandra pedicillata prieuriana quadriciliata robusta schaeferi senagalensis uniflora urceolata verticillata wormskioldii Anemopsis californica

Angiopteris helferiana Anubias AFZ afzelli BAR barteri GIG gigantea GIL gilletti GRA gracilis HAS hastifolia HET heterophylla key to species PYR pyraertii sp Undescribed species Aponogeton af Africa au Australia ia Indo-Asia md Madagascar x Hybrids Plants of the genus Aponogeton are strictly emersed and can not live out of water. They evolved in Australia then spread all over the world, fossils have been found in Peru, Labrador and Greenland; then migrated back to Australia, leaving species all the way there and back. Aponogeton distachyos, described in 1792 is the foundation species and exists in the oldest fossils found in Peru, Greenland and Canada. More recent species have smaller and more complex flowers. A. distachyos flowers are sold canned in South Africa where they are one of three ingredients in a regional lamb stew. Aridarum sp Brunei Asplenium unilaterale viviparum Azolla cristata filiculoides pinnata The only sure method of distinguishing this species from Azolla filiculoides is to examine the trichomes on the upper surfaces of the leaves. Trichomes are small protuberances that create water resistance. They are unicellular in A. filiculoides but septate (two-celled) in A. cristata algae black green nutrients sucession