Crypto s

Can anyone give me a spot on the net where I can get detailed info on 
Crypto s. I`m interested in descriptions (leaf-form and color, 
folewers etc) of submers and emers growing 
plants. If possibly with some info on how to grow them.

One direct question. I use to have Cryptocoryne affinis. I understand 
the name has changed. If so what s the new name.

I m living in the Netherlands, and i find it harder and harder to find the 
plants that used  about 10-15 years ago. Is this a common phenomena 
or is this something just for holland??

Frank Kerkhoven