Over the weekend, I was passing by the fringe of the central catchment area in Singapore where I located another area with what I believed should be C. griffithii.
The area was wet but with rather hard sandy ground. I did not bring any pH measuring kit with me but I expected that ithe pH should be around 4.5 to 5.0. Blyxa aubertii could be found growing in this area too along with the cryptocorynes.
Both submersed and emersed cryptocorynes could be found at this location.
The leaves had white central main vein with black markings and were light green in colour. The underside of the leaves are reddish as expected of the C. griffithii found in Singapore.