Then I take it you can provide another photo of R macranda with downward
cupped, prominently- veined leaves?...

I am a very poor photographer. I tried my best.
http://www.dlink.org/aqua/image/Rotala_macranda.jpg

I think your are talking about this sunset

http://www.dlink.org/aqua/image/Hygrophilia_Sunset.jpg

--
Thank You

Dominic
http://www.dlink.org/aqua