Results 31 to 33 of 33
11-01-2013, 11:02 PM #31
I was worried about the roots crowding the tank lol
11-02-2013, 04:07 PM #32
At first I thought it might be the closed tanks, but then I discovered that I do not actually have the tropical species, Limnobium laevigatum. There are actually three distinct plant species with (to me from photos) identical leaves, but the flowers are very different. My plants flowered and I took some photos, and added them to the plant's profile; then an employee of the US Dept of Agriculture saw the profile and photos, and emailed to say this plant is considered invasive in several states and suggested we not be promoting it. It was then that I sorted out the different species. So what I have is not tropical but a temperate species, and this probably explains the periodic dying back phase.
I added this paragraph to the profile:
There are other plants very similar in appearance that may be confused with Limnobium laevigatum. Limnobium spongia is a native North American Frogbit, and Hydrocharis morsus-ranae is a European/Asian plant sometimes referred to as Common or European Frogbit. This latter is a very invasive plant that was intentionally introduced into North America via Ottawa, Canada in 1932. It has since spread quickly and by 2003 was known to occur throughout much of southeastern Ontario, southern Quebec, northern New York and Vermont and eastern Michigan. "Frogbit" is classified in several states including California and Washington as a noxious weed. It is likely that some aquarium plants are in fact not L. laevigatum but one of the other two.Byron Hosking, BMus, MA
Vancouver, BC, Canada
Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
11-02-2013, 06:09 PM #33Banned Swordtails
- Join Date
- Oct 2013
- Moore, SC
Byron, I suspect you are correct. I picked my Frogbit up from another aquarist and I've never observed the flower, but right now it's in a die-back phase so it could be the invasive variety. It's not restricted where I'm located, but I probably need to verify the species I have before sending it to anyone else.
Note to all - it's always a good idea to check regional/state/province restrictions on various aquatic plants and fish before shipping them, or purchasing them! I do typically do this before sending plants to folks.