A new species of Paraboea (Gesneriaceae), P. khotamiae, from a limestone karst in central Laos, is described and illustrated. The
species resembles Paraboea bintangensis, P. prazeri and P. robusta, but differs in leaf shape and floral features, especially corolla
shape and size, the interior of the corolla tube, and capsule characters. In addition, we report the occurrence of Middletonia reticulata
(Gesneriaceae) for the flora of Laos for the first time.
Keywords
Angiosperms, flora of Laos, limestone flora, taxonomy.