I posted this in our NJAGC forum and thought I'd share it here too.
11-28-09: I came down to work today to check on the new Oto's in the 150 and decided to clean the 37 gallon tank where my C. usteriana are located. As I dropped the water, I saw a flower bud coming up. I took a few photo's which I'll paste up once I get home and can get them off the camera.
The flower is nowhere near the surface. It is about 4" long at present. I am thinking the disturbance of the roots when Glenn took some out to plant in the 150 shocked them into flowering. I haven't disturbed that substrate in at least 2 years. I also replaced the broken heater in that tank after Glenn pointed out how cold the tank was.
Here's the photo's:
12-7-09: I looked at the tank tonight and see at least three flowers on separate plants and it looks like there may be a fourth coming up.
Now I am thinking of dropping the water level temporarily to get a flower opened to confirm the ID on these plants as C. usteriana. And I am also thinking of trying my hand at pollinating these flowers and trying to get some seeds.
Glenn, would you be able to post a photo of your plants here. I'd like to see what they look like in your tank with higher light than my 1 watt per gallon.
Today's photo's-all hand held without flash so they will be a little blurry.
Full tank shot, look close to see the blooms:
I just checked and found in my records that I purchased these plants in January 2005 from a LFS that purchased them from Aquarium Landscapes. I know I bought some from Aquarium Landscapes directly soon after this. The plants have been undisturbed in a 37 gallon tank since then. Very much a neglected tank. Very seldom fertilized, some fish, very seldom do water changes. The water is kept at Tanganyikan conditions.
I think the recent uprooting of some of the plants to plant in another aquarium, the unnoticed breaking of the heater giving cold water, and the subsequent water changes and new heater all helped to stimulate the flowering.