Algific talus slopes are characterized by locally detected unique micrometeorological phenomena such as cold air blowing or water getting frozen during summer and warm wind blowing during winter in a hole or crack on the rock. It is thus known that rare plants and plants that are uncommon in the environments at close proximity to humans are widely distributed on the algific talus slopes. Notably, as the habitats of polar and alpine plants that naturally grow in low temperature regions are being continuously reduced due to global warming or climate change, the micrometeorological phenomena on algific talus slopes, where low temperature is maintained even in summer, are critical for providing a refuge for plants sensitive to high temperatures and for the conservation of rare and endangered species. This study was conducted to rediscover the phytogeographic values of algific talus slopes by investigating the distribution of five plant types across 25 algific talus slopes as the specific areas of forest biodiversity. Vascular plants were investigated in each season during April 2016 to November 2021. We share the data of the sample collected here.