Wong S. Y.: Studies on Schismatoglottideae (Araceae) of Borneo XXI — Two new species of the Schismatoglottis Calyptrata Group: Schismatoglottis heterodoxa and S. ranchanensis. — Willdenowia 42: 255–260. December 2012. — Online ISSN 1868-6397; © 2012 BGBM Berlin-Dahlem. Stable URL: http://dx.doi.org/10.3372/wi.42.42210 Two new species of the Schismatoglottis Calyptrata Group are described from Malaysian Borneo. One, S. heterodoxa, is the second rheophytic species ever recorded for the Calyptrata Group. The other, S. ranchanensis, is lithophytic, a rather rare life form for that group. A key to the Bornean rheophytic and lithophytic species of the Calyptrata Group is given and both novelties are illustrated.