The Vascular Plants of Mt. Jigisan in Hongseong-gun, Korea

지기산(홍성군) 일대의 관속식물상

Abstract

To provide fundamental information to areas that lack data on the plant resources and the ecosystem, this study conducted a survey on the vascular plants in Mt. Jigisan in Hongseonggun. The vascular plants identified during the six-round field surveys were a total of 443 taxa: 96 families, 286 genera, 391 species, 7 subspecies, 40 varieties, 3 forms, and 2 hybrids. On floristic regional of Korea, Mt. Jigisan is deciduous broad-leaved and conifer-mixed forest which is south province of Korean peninsula. 4 taxa of Korean endemic plants such as Populus ${\times}$ tomentiglandulosa, Forsytsythia koreana, Forsytsythia ovate, and Iris rossii var. latifolia were collected. The vascular plants on the red list according to IUCN evaluation basis were found to be 6 taxa: Vulnerable (VU) species of Forsytsythia ovata, Least Conern (LC) species of Chionanthus retusus, Pseudoraphis ukishiba, and Cymbidium goeringii, and Not Evaluate (NE) species of Panax ginseng, and Fimbristylis verrucifera. The floristic regional indicator plants were found 27 taxa: 2 taxa of grade V, 3 taxa of grade IV, 6 taxa of grade III, 4 taxa of grade II, and 12 taxa of grade I. The specific distribution plants were found 27 taxa: 4 taxa of northern part of plants, 12 taxa of southern part of plants, 10 taxa of isolation distribution of plants, and 1 taxon of recently reported Viola betonicifolia var. albescens. The invasive alien plants were identified as 67 taxa. The naturalized index (NI) was 15.12%, and urbanization index (UI) was 20.9%, respectively.

본 연구는 식물자원 및 생태계에 대한 정보가 부족한 지기산 일대를 대상으로 관속식물상을 조사하여 자연환경 평가 및 기초자료 구축을 위해 수행되었다. 현지조사 결과, 낙엽활엽수 및 침활혼효림을 이루는 지역으로서 관속식물은 96과 286속 391종 7아종 40변종 3품종 2교잡종 등443분류군이 확인되었다. 한반도 고유종은 은사시나무, 개나리, 만리화, 넓은잎각시붓꽃 4분류군이 확인되었다. IUCN 평가기준에 따른 적색목록은 6분류군으로 취약종(VU)에 만리화, 관심대상종(LC)에 이팝나무, 물잔디, 보춘화, 미평가종(NE)에 인삼, 푸른하늘지기가 확인되었다. 식물구계학적 특정식물은 27분류군으로, V등급에 2분류군, IV등급에 3분류군, III등급에 6분류군, II등급에 4분류군, I등급에 12분류군이 조사되었다. 특이분포식물은 27분류군으로 북방계식물이 4분류군, 남방계식물이 12분류군, 격리분포식물이 10분류군이었으며, 최근 학계에 보고된 흰들제비꽃 1분류군이 확인되었다. 외래식물은 67분류군으로 귀화율(NI) 15.12%, 도시화지수(UI) 20.9%로 나타났다.

Figure 1. Climate diagram of this study.

Figure 2. Investigated area in this study.

Figure 3. Some remarkable taxa on Mt. Jigisan. A: Chloranthus fortunei; B: Chorispora tenella; C: Lathyrus quinquenervius; D: Panax ginseng; E: Fimbristylis stauntonii; F: Fimbristylis verrucifera; G: Lilium concolor var. pulchellum; H: Iris rossii var. latifolia

Table 1. The number of vascular plants distributed in this study

Table 2. The list of Korean endemic and red list plants investigated in this study

Table 3. The list of floristic regional indicator plants investigated in this study

Table 4. The list of specific distribution plants investigated in this study

Table 5. The list of invasive alien plants investigated in this study

Table 5. Continued