Lake Habbema is considered a center of Rhododendron diversity because its geographical position is ideal for the growth of rhododendrons. More than 20 species are found in this region. The area consists of grassland, sup-alpine and mountain forests. Some areas have been damaged by illegal logging and road construction. A study was conducted to determine the effect of habitat damage on the diversity of Rhododendron subgenus vireya in the Lake Habbema region. The research was carried out by compiling the findings of field work undertaken before and after the construction of the Trans-Papua Highway.