A sample of terrestrial Borneo Gesneriads

A mix bag of the ground herbs from the African Violet Family encountered during a couple of trips in Sarawak..... posting here in the hope of getting them identified.

This smallish herb with Henckelia-like habit appeared to be from genus Hexatheca, maybe H. fulva. It was found on shady ledges at the bottom of a limestone hill in West Sarawak.

Found on the same limestone hill as the previous species but on highly exposed high grounds subjected to dry winds and direct sun is this Paraboea with silvery felty leaves. It reminds me of Sinningia leucotricha commonly found in gesneriad collections and utilised the same strategy to reflect sun rays and heat from the leaf surface.

Borneo is very rich in Cyrtandra species and this is one of them - but exactly what species I do not know. The leaves are glabrous and quite succulent. It is also confined to limestone.

This last species is probably most horticulturally interesting, with its shiny variegated leaves - and tidy size (less than one foot tall). I had initially thought it was some kind of Scorpion's tail (genus Pentaphragma) but closer inspection showed Cyrtandra-like bloom between the leaves. Unfortunately the habitat which I had found it had been destroyed and had not seen it anywhere else. Unlike the other species, it inhabits sandstone embarkments by the side of the forest.

If readers can ID any of the plants please share it here.

Cheers.