Halfway up a granite mountain, we stopped by a nice little cascade to cool our feet. For 3 hours we had walked without seeing another soul, which was rather erie since this path was obviously quite well trodden before. We later found out from nearby residents that the place was actually cordoned off by authorities due to activities from gangsters and drug takers. We had actually bashed through a part of the forest that had bypassed the notices.
Some rheophytes and herbs were growing at the edge of the stream. This one is a Sonerila begonifolia aff, a fern-like Selaginella and Argostemma growing on wet rocks.
Nice red hairs on the Sonerila.
This rheophyte is a Pipthospatha ridleyii, an aroid that sometimes find its way into the aquarium trade by accident, although it is not a true aquatic plant and is unlikely to do well fully submerged for long. Young leaves have nice variegated leaves but the variegation diminish as the plant grows.
See also Rock garden and Bucephalandra in Borneo