Eight wood samples representing six species in two genera of Scytopetalaceae are examined with respect to qualitative and quantitative features. Rhaptopetalum differs from Scytopetalum by having scaJariform perforation plates, fiber-tracheids, longer vessel clements, and a series of features probably related to the understory status of Rhaptopetalum is compared to the emergent nature ofScytopet...