Pleuroschisma, a new section of Cyrtandra (Gesneriaceae) from Borneo

Twelve Bornean species of Cyrtandra constitute a new section, Section Pleuroschisma, the name derived from an important diagnostic character, namely the unique fruit with a median septicidal split on each side (not reaching either apex or base of the fruit). Nine of the species and two varieties are newly described, C. angustielliptica Hilliard & B.L. Burtt, C. coacta Hilliard & B.L. Burtt, C. insolita Hilliard & B.L. Burtt, C. linauana B.L. Burtt, C. seganica Milliard & B.L. Burtt, C. tesselata Hilliard & B.L.Burtt, C. tunohica Hilliard & B.L. Burtt, C. pendulifera Kraenzl. var. grossipilosa Hilliard & B.L. Burtt and C. sarawakensis C.B. Clarke var. longipilosa Hilliard & B.L. Burtt. Two species recognized remain nameless because the material is inadequate to typify a name.