Bringing to six the number of Cryptocoryne species found in the Philippines (of which 5 are endemic), this species most resembles UST, but it not particularly similar in outward appearance.
Ref:
Cryptocoryne joshanii (Araceae), a new species serendipitously discovered
in Sulu archipelago, Philippines
http://tai2.ntu.edu.tw/taiwania/pdf/tai.2018.63.248.pdf
