The aim this study is to establish the floristic composition of vascular plants of Mt. Gwangdeok. The survey was performed 12 times from May to November in 2007 and April to November in 2011. Vascular plants observed were 539 taxa containing 100 families, 317 genera, 467 species, 6 subspecies, 60 varieties and 6 formae. Among the investigated plants, 17 taxa (3.1%) were Korean endemic. The rare plants designated by the Korea Forestry Service in this region were 20 taxa. The floristically and geographically important plants were 90 taxa: grade I, II, III, IV, and V species were 29, 25, 21, 11, and 4 taxa, respectively. 32 taxa (9.9%) were found in this region and it is relevant to 5.9% of the total taxa number of this region.

This study was carried out to investigate the flora of Icheon-si (Gyeonggi-do). This work was investigated during the April to November in 2011. Some areas 2002, 2004, 2007 collected data were used. Vascular plants based on voucher specimens were summarized as 547 taxa, including 99 families, 313 genera, 475 species, 4 subspecies, 58 varieties, and 10 forms. Among the investigated 547 taxa, 6 Korean endemic species, 7 rare plants and 43 specially designated plants by the Ministry of the Environment were also included. A naturalized plants were 47 species, correspond to 14.6% of totaling 321 species appeared in South Korea.