H.  Tsukaya, Suetsugu, K., and Suleiman, M., ?Thismia bryndonii (Thismiaceae), a new species from Maliau Basin, Sabah, Borneo?, Phytotaxa, vol. 312(1), pp. 135 - 138, 2017.

H.  Tsukaya, Suleiman, M., and Okada, H., ?A new variety of Thismia hexagona Dan?ák, Hrone?, Koblová et Sochor (Thismiaceae) from Sabah, Borneo, Malaysia?, Acta Phytotax. Geobot., vol. 65, no. 3, pp. 141-145, 2014.