본 연구는 능소화를 대상으로 화분형태 및 RAW264.7 대식세포에서의 세포생존에 미치는 영향을 조사하여 유해성 여부를 파악하고자 한다. 주사전자현미경을 이용한 화분 형태를 확인해 본 결과, 화분립 형태는 장구형이고 발아구의 형태는 3공구형이며 화분 표벽 (extine)은 망상의 형태이고 외부로 돌출된 돌기는 관찰되지 않았다. 능소화 70% MeOH 부위별 (꽃, 잎, 줄기) 추출물 및 화밀을 24, 48시간 동안 농도별 (10, 20, 50, 100 μg mL-1)로 RAW264.7 대식세포에 처리한 후 MTT assay로 측정하였다. 그 결과, 능소화 추출물 및 화밀을 농도별로 24시간 처리하였을 때 모든 농도에서 99.0% 이상의 세포생존율을 보여 세포독성은 나타나지 않았다. 48시간 처리하였을 때 꽃, 잎, 줄기 추출물은 50 μg mL-1농도 이하에서 세포독성은 나타나지 않았으나, 화밀의 경우 저농도인 10 μg mL-1부터 농도의존적으로 세포독성이 높아지는 것을 확인하였다.

Korea National Arboretum (KNA) is located in Gwangneung forest, between Namyangju-si and Pocheon-si, in Gyeonggi province. In KNA, there are 15 specialized plant gardens. The woody plants of 1,863 species and the herbaceous plants of 1,481 species have been maintained in these gardens for 500 years. KNA have suitable environments for fungal growth. Despite floral diversity in there, the intensive researches on fungal flora have not been studied to date. Therefore, in order to get informations on fungal flora, regular field trips were made to this area and fresh fungal specimens were collected from there for 48 days from May in 2007 to November in 2010. Total 1,522 higher fungal specimens were collected in Gwangneung forest. All the collected specimens were identified and classified in 8 classes, 19 orders, 69 families, 267 genera and 454 species, and deposited in the herbarium of Korea National Arboretum (KNA). Among the identified specimens, sixteenspecies were confirmed as new to Korea as follows: Cudoniella acicularis, Discina ancilis, Helvella costifera, Entoloma cephalotrichum, Entoloma lepidissimum, Mycena leptocephala, Naematoloma gracile, Sistotrema octosporum, Hydnellum peckii, Lachnellula calyciformis, Amanita cockeri f. roseotinctata, Micromphale foetidum, Mycena corynephora, Clitocybe lateritia, Physisporinus vitreus, and Datronia stereoides. Literature cited 1. 김현중, 한상국. 2008. 광릉의 버섯. 국립수목원. 420pp. 2. 今關六也, 本鄕次雄. 1987. 原色日本菌類圖鑑(I). 保育社. 325pp. 3. Breitenbach, J. and Kränzlin, Fred. 1984. Fungi of Switzerland: 1. Ascomycetes. Mykologia Luzern. 310pp. 4. Breitenbach, J. and Kränzlin, Fred. 1986. Fungi of Switzerland: 2. Non gilled fungi. Mykologia Luzern. 412pp. 5. Breitenbach, J. and Kränzlin, Fred. 1995. Fungi of Switzerland: 4. Agarics 2nd part. Mykologia Luzern. 368pp. 6. Singer, R. 1986. The Agaricales in Modern Taxonomy. Koeltz Scientific Books. 7. Smith, A. H., Smith, H. V. and Weber N. S. 1979. How to know the gilled mushrooms. Wm. C. Brown Company Publishers. pp. 27, 263, 286-287.

Here we reported two unrecorded naturalized species from Korean flora. Andropogon virginicus L. of Graminaeae and Euphorbia postrata Aiton of Euphorbiaceae are collected from Dong-gu, Ulsan-si and Sinjindo-ri, Taean-gun, Chungcheongnam-do respectively. A. virginicus L. was easily distinguishable from Themeda triandras var. japonica Makino by keel on glume, 2-4 racemes and long hairy rachis. Thus, the new Korean name, 'Na-do-sol-sae', was given. E. postrata Aiton was cleary distinguished from related taxa by hairs on only edges of fruits. The new Korean name, 'Nu-un-ttang-bin-dae' was given considering the species epithet. Descriptions, illustrations and photographs showing habitat were given.