• Korean Journal of Plant Taxonomy
• /
• v.41 no.3
• /
• pp.223-229
• /
• 2011

The taxonomy of the Isodon excisus complex has been ambiguous and problematic because the morphological characters, especially characters related to the leaf distinguishing subgroups of the complex in the original descriptions, are variable. To elucidate the taxonomic structure of the I. excisus complex in Korea, 34 characters were measured from 70 OTUs representing different locations and analyzed by principal component analysis (PCA). The analysis showed that principle component axis 1, 2, 3 (PC1, PC2, PC3) represents 52.0% of the total variance and characters showing high loading values for PC1 were leaf shape, density of non-glandular hairs on the lower surface of the leaf, and characters related to the teeth of the leaf. The length of apical tooth and the angle between two widest points of the leaf were highly correlated to PC2 and PC3, respectively. Three-dimensional scatter plotting of OTUs for PC1, PC2, and PC3 axis showed that the areas of previously recognized three subgroups of I. excisus completely overlapped. Our result supported that just one taxon, I. excisus var. excisus, should be recognized in the complex at the variety level.

• Archives of Pharmacal Research
• /
• v.20 no.3
• /
• pp.291-296
• /
• 1997

The studies were carried out to evaluate the constituents in the aerial part of Isodon excisus var. coreanus (Labiatae). From the aqueous fraction of methanol extract, compound I (${\alpha}$-[[3-(3, 4-dihydroxyphenyl)-1-oxo-2-propenyl]oxy]-3,4-dihydroxy-benzenepropanoic acid), compound II (9-methyl-dihydroferulic acid-4-O-.betha.-D-glucopyranosyl $(1{\rightarrow}2)$-${\alpha}$-L- rhamnopyranosyl (1.rarw.4)-.betha.-D-glucopyranoside), compound III (ent-7.alpha., 11${\alpha}$,15.betha.-trihydroxy-kaur-16-en-1-O-.betha.-D-glucopyranoside) and compound IV ($2{\alpha}$,3${\beta}$,$7{\alpha}$,23-tetrahydroxy-olean-12 -en-28-oic acid 28-O-${\beta}$-D-glucopyranoside) were isolated and identified on the basis of their physicochemical and spectroscopic evidences[IR, FAB(-)MS,$^{1}H-NMR,$$^{13}C-NMR,$$ HMQC$$^{1}H-^{1}H $COSY and HMBC (Heteronuclear Multiple Bond Connectivity)]. Especially, New compounds II and III were named Isodonin A and Isodonin B respectively.

• Archives of Pharmacal Research
• /
• v.23 no.3
• /
• pp.243-245
• /
• 2000

The diethyl ether extract of isodon excisus var. coreanus exhibited significant inhibitory activity in aromatase assay. Bioactivity-guided fractionation of the extract led to the isolation of three active compounds: inflexin(ent-1${\alpha}$-hydroxy-3${\beta}$,6a-diacetoxykau r-16-en-11,15-dione) (1), ursolic acid (2), and ursolic acid 3-O-acetate (3).

• Journal of the Korean Society of Environmental Restoration Technology
• /
• v.12 no.1
• /
• pp.92-100
• /
• 2009

This study was carried out to investigate vegetation structure and soil properties of Angelica gigas population distributed in Jeombongsan, Bangtaesan, Odaesan, Gyebangsan and Jirisan. From August 2007 until September 2008, 5m${\times}$5m quadrat was established in native area of Angelica gigas in order to record a dominants and coverage, and soil factors at 20 sites. It was found that the altitude in the distributed areas for Angelica gigas population was 710m or more. Angelica gigas population was classified into Parasencio auriculata var. kamtschatical dominant population, Pseudostellaria palibiniana dominant population, Isodon excisus dominant population and typical dominant population. In the site of study, soil pH, electrical conductivity, soil organic matter, available phosphorous, and exchangeable potassium, exchangeable calcium, exchangeable magnesium, exchangeable natrium concentration and total nitrogen were ranged from 5.1~6.2, 0.1~0.79dS/m, 2.21~22.11%, 9.56~37.97mg/kg, 1.85~23.88cmol+/kg, 0.21~1.18cmol+/kg, 1.07~5.09cmol+/kg, 0.04~0.14cmol+/kg and 0.09~1.04% respectively. The Parasencio auriculata var. kamtschatical dominant population was found in area of high altitude and had high slope degree. But Pseudostellaria palibiniana dominant population was found in area of low altitude and low slope degree. Isodon excisus dominant population was found to have higher soil pH and exchangeable potassium concentration than the other dominant population.

• Journal of Korean Society of Forest Science
• /
• v.87 no.3
• /
• pp.459-465
• /
• 1998

To obtain the basic data for the conservation and cultivation of native herb species under the forest, the relations between distribution of native herb species and site factors, distribution of native herb species, and site factors were surveyed on natural forest at subalpine zone in Mt. Odae. Ainsliaea acerifolia, Pseudostellaria palibiniana and Pimpinedla brachycarpa were distributed mainly on broadleaved mixed forest, Clematis fusca var. coreana, Carex siderosticta. Isodon excisus and Vicia unijuga did mainly on gab sites. The distribution of Ligularia fisheri, Aconitum pseudo-laeve var. erectum, Cacalia hastata and Artemisia stolonifera were significantly differed between slope directions. Artemisia stolonifera was distributed more frequently in south directed slope, and Ligularia fisheri, Aconitum pseudo-laeve var. erectum and Cacalia hastata were distributed more frequently in north and west directed slope than the other. The distribution of Aconitum pseudo-laeve var. erectum and Artemisia stolonifera were significantly differed between soil moisture conditions. Artemisia stolonifera was distributed mainly on the dry site, but Aconitum pseudo-laeve var. erectum did mainly on the dry site. Negative correlations between density of Clematis fusca var. coreana, Carex siderosticta. Isodon excises and Vicia unijuga and crown coverage was proved. Aconitum pseudo-laeve var. erectum, Pimpinella brachycarpa, Meehania urticifolia, Smilacina japonica and Pseudostellaria palibiniana were mainly distributed on wet and shady sites under forest canopy, but Pedicularis resupinata, Clematis fusca var. coreana and Artemisia stolonifera did on sunny sites at forest edge or gab.

• Korean Journal of Environment and Ecology
• /
• v.20 no.2
• /
• pp.200-207
• /
• 2006

The objective of this study was to investigate the site and growth characteristics of Acer pictum var. mono growing in the deciduous stands at Mt. Joongwang area located in Pyungchanggun, Kangwon-do. A. pictum var. mono was mainly distributed at the rather steep slope and aspect facing from northeast to northwest, and altitudes ranging from 1,000 to 1,200m. It grew at relatively deep a soil layer with high moisture and nutrients. Major competing species in the upper stories were Betula costata, Acer mandshuricum, Quercus mongolica, Cornus controversa, and herb plants such as Meehania urtidfolia, Isodon excisus, Astilbe chinensis var. davidii, Dryopteris crassirhizoma and Ainsliaea acerifolia in the floor. The height growth was 0.25m in early time, decreased gradually and sustained growth of lower than 10cm. The diameter growth of A. pictum was under 1mm in early time, but increased to 0.3mm/yr and showed continuous growth of 2mm/yr recently. Annual volume growth showed rapid increased about age 120 and then showed stable growth, so the rotation period of A. pictum is expected more than 200 years without decay of heartwood.

• Korean Journal of Environment and Ecology
• /
• v.27 no.1
• /
• pp.22-29
• /
• 2013

This research was carried out for revealing the co-relationships between insect-pollinators and the plant species of Labiatae and Umbelliferae, insects visiting in flower and the flowers in Korea, were studied from April 2010 to August 2012. The sum of flower visiting degrees in Labiatae are shown 21 in Hymenoptera, 16 in Lepidoptera, and the lowest 1 in Diptera and Coleoptera, respectively. The sum of flower visiting degrees in Umbelliferae are shown 27 in Diptera, 24 in Hymenoptera, 21 in Coleoptera, and 13 in Lepidoptera, respectively. 17 pollinator species visited the flower of Angelica gigas, next 15 pollinator species did the flower of Agastache rugosa, 13 pollinator species did the flower of Prunella vulgaris var. lilacina. 13 pollinator species foraged on the flower of Peucedanum terebinthaceum. and then 11 pollinator species on the flower of Angelica dahurica. Only 1 pollinator species visited the flower of Clinopodium chinense var. grandiflora and Isodon excisus. Pollinators of Coleoptera and Diptera visit more frequently to the flowers of Umbelliferae than those of Labiatae. Pollinators of Lepidoptera and Diptera visit more frequently white flower than purple one. This study found out that mutualistic relations between plants and insect pollinators in Korea.