38 Microcystina muscorum Van Benthem Jutting, 1959 38A SEM image of the third whorl 38B SEM image of apex (Malaysia, Sabah, Kinabatangan river valley, Batu Mawas, leg. M. Schilthuizen, BOR/MOL 1341) 39 Microcystina gratilla Van Benthem Jutting, 1950 39A SEM image of the third whorl 39B SEM image of apex (Malaysia, Sabah, Kinabalu N.P., Monggis-Tambuyukon trail between 896 and 1016 m alt., BOR/MOL 4141).