• Title/Summary/Keyword: taxonomic examination

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Taxonomy of tribe Neillieae (Rosaceae): Physocarpus (나도국수나무족의 분류: 산국수나무속)

  • Oh, Sang-Hun
    • Korean Journal of Plant Taxonomy
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    • v.45 no.4
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    • pp.332-352
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    • 2015
  • The tribe Neillieae, a small group of about 18 species in the Rosaceae, comprises three taxonomically difficult genera, Neillia, Physocarpus, and Stephanandra. The tribe, characterized by lobed leaves with persistent or deciduous stipules and ovoid, shiny seeds with copious endosperm, is strongly supported as a monophyletic group by a variety of lines of molecular evidence. Due to the high amount of morphological variation across the three genera and the species in tribe Neillieae, conflicting classification schemes and numerous species have been proposed over the past three centuries. However, no comprehensive systematic study of the group, including all species across their geographic ranges, has ever been undertaken. As part of a taxonomic revision of tribe Neillieae, a revision of Physocarpus based on the morphological examination of herbarium specimens, including types, and field observation is presented. Artificial keys, comprehensive nomenclatural treatments, descriptions, distribution maps, and lists of specimens examined are provided. Six species in Physocarpus are recognized. A lectotype is here designated for the following species: Opulaster pubescens, Opulaster ramaleyi, Spiraea opulifolia var. parvifolia, Spiraea opulifolia var. tomentella, Physocarpus michiganensis, and Physocarpus missouriensis.

Reexamination of the Korean plant names Changpo and Sukchangpo (식물명 창포와 석창포의 재검토)

  • Shin, Hyunchur;Nomura, Michiyo;Kim, Il Kwon;Hong, Seung-jic
    • Korean Journal of Plant Taxonomy
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    • v.47 no.2
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    • pp.154-160
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    • 2017
  • The Korean plant names Changpo and Sukchangpo, including their related names Suchangpo and Kyeson, were somewhat confusingly used in both the Korean classics and even now. To clarify these names, the names written in the Chinese classics and the Korean classics were examined closely and compared to those of the modern flora of China and Korea. In the Chinese classics, Changpo and Sukchangpo were considered as conspecific with Acorus calamus, which has leaves with distinct veins, whereas Sukchangpo and Kyeson have leaves without distinct veins and are considered as A. gramineus. However, in the Korean classics, these names have been confusingly used thus far. Sukchangpo and Gyeson were considered as A. gramineus, and Sukchangpo and Changpo were considered as A. calamus, erroneously. Therefore, the following corrections are needed: plants having distinct leaf veins were named Changpo (A. calamus), and plants having vague leaf veins were named Sukchangpo (A. gramineus), and the names of Sukchangpo and Kyeson should be discarded to avoid confusion. In addition, to respond to the Convention on Biological Diversity, we propose a study to clarify the taxonomic identities of the plant names written in Chinese script and an examination of the Korean plant names listed in the Korean classics.

A study on morphological and pattern analysis in two kinds of Aconiti Radix (부자(附子)와 초오(草烏)의 내외부형태(內外部形態)와 패턴분석연구)

  • Kang, Gyun-Heok;Choi, Go-Ya;Kim, Hong-Jun;Ju, Young-Sung
    • Korean Journal of Oriental Medicine
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    • v.12 no.1
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    • pp.23-38
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    • 2006
  • The taxonomic list of specific features in external and internal shape and the pattern analysis of Aconitum carmichalei $D_{EBX}$ as the original plant of Aconiti Lateralis Radix Preparata and Aconitum cliiare Dc as the original plant of Aconiti Ciliare Tuber are as follows. 1. Aconitum carmichalei $D_{EBX}$ has tri-palmately parted leaves, petiole in lower leaves, and its ovary has short hair. Whereas Aconitum cliare Dc has $3{\sim}4$ parted leaves, long petiole, and its ovary has not hair. 2. Aconitum carmichalei $D_{EBX}$ has cylinder shape is relatively small in length and diameter, is greyish brown blacky brown in outer surface, greyish $white{\sim}dark$ gray in section. 3. According to the collection place, there is a remarkable difference in the physical shape of herbal states. Aconiti Lateralis Radix Preparate(medicated in Korea) is more transparent blacky brown color than Aconiti Lateralis Fadix Preparata(medicated in Chian). Also Black Aconi Radix(墨附片) has exodermis and White Aconi Radix(白附片) has not. 4. The internal characteristics entirely correspond to in internal shape described in the literatures, Only it is possible to discriminate between black Aconi Radix(墨附片) and White Aconi Radix(白附片) by the existence of cork layer. The classification between Aconiti Lateralis Radix Preparata and Aconiti Ciliare Tuber makes entirely Tuber makes entirely remarkable difference in the physical shape of cambium layer Namely, in shape of cambium layer the kinds of Aconiti lateralis Radix Prepala has horn-like shape and the kinds of Aconiti Ciliare Tuber has circle-like shape. 5. In the peak of examination substance in comparison to Rt of the index material diterpene alkaloid mesaconitine, aconitine, hypaconitine chromatogram Aconiti Ciliare Tuber is higher than in Aconiti Lateralis Radix Preparata This explain that the component changes after the process of medicine. 6. In the Content of mesaconitine, aconitine and hypaconitime Aconiti Ciliare Tuber is higher than Aconiti Lateralis Radix Preparata. 7. In Aconiti Lateralis Radix Preparata, aconitine, hypaconitine and mesaconitine each appears in Rf 0.46, 0.54, 0.32. But except Aconiti Ciliare Tuber the band does not appear. For the future, such results will be used as the basic source of additional research, and a far-reaching comparative study is needed to distinguish between many kinds of same genus-degree of relatedness.

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Taxonomy of Korean Asarum (Aristolochiaceae) by the Morphological Characters (한국산 족도리풀속(Asarum)의 외부형태학적 형질에 의한 분류)

  • Leem, Hyosun;Oh, Byoung-Un
    • Korean Journal of Plant Resources
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    • v.32 no.4
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    • pp.344-354
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    • 2019
  • In seven species of Korean Asarum, 44 qualitative and 28 quantitative characters were reviewed taxonomically. Among 44 qualitative characters observed in vegetative and reproductive organs, the states of 27 characters were common in all the seven species. Among 28 quantitative characters, five characters have the same values in all the seven species; the number of cataphyll (2-4), leaf (2), calyx lobe (5), stamen (12) and pistil (6). White spots on adaxial surface of leaf (effectively) distinguished A. maculatum and A. versicolor from the other species. Many long soft hairs on abaxial surface of leaf distinguished A. mandshuricum from other species with short hairs. The glandular hairs on inner surface of calyx tube were divided into 2 types, reflecting the taxonomic relationships between the species: Type 1 has non-stalked glandular hairs (A. maculatum, A. sieboldii and A. sp.), and Type 2 has stalked glandular hairs (A. patens, A. versicolor, A. mandshuricum and A. misandrum). The length, shape, colour of calyx lobe and the extent to which the calyx lobe recurves, as well as the diameter and colour of calyx tube throat, were confirmed to be taxonomically valuable. In the case of glandular hair density on the surface of calyx lobe, A. patens with low density and A. sp. with high density were clearly distinct from all the other species with intermediate hair density. Meanwhile, the stylar protuberance length of A. patens (2.9-3.3 mm) was strikingly different from other species (1.4-2.5 mm). Additionally, further examination of the identities of A. yeonbyeonense and A. yeonbyeonense var. viridiluteolum is required.

Re-examination of the vascular plants on Hongdo Island, Korea (홍도 관속식물상 재검토)

  • JANG, Young-Jong;PARK, Jong-Soo;LEE, Jin-Sil;LEE, Ji-Yeon;CHOI, Byoung-Hee
    • Korean Journal of Plant Taxonomy
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    • v.51 no.3
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    • pp.205-249
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    • 2021
  • This study was carried out to survey the flora of Hongdo Island in Sinan-gun, Jeollanam-do, South Korea. Specimens collected from previous Hongdo flora studies were reexamined using a relevant biodiversity database, and field surveys were carried out 22 times from April of 2003 to October of 2020. Based on the specimens collected during both previous studies and this study, the identified vascular plants of Hongdo consisted of 472 taxa comprising 102 families, 296 genera, 425 species, 6 subspecies, and 41 varieties. Among them, 111 taxa are newly recorded in this study, and 6 taxa are described in detail in terms of their morphological characteristics and habitat. Also, 29 taxa were reviewed or re-identified with corresponding taxonomic annotations. In Korea, Hongdo represents the northern distributional limit of the 4 taxa of Goodyera biflora, Damnacanthus major, Calanthe aristulifera, and Hemerocallis hongdoensis. Moreover, Hosta yingeri and Saussurea polylepis are endemic to Hongdo and nearby islands in Korea. Distribution maps of these species were prepared. Protected species designated by the Ministry of Environment were 7 taxa consisting of 2 taxa of level I, specifically Sedirea japonica and Neofinetia falcata, and 5 taxa of level II, which were Cymbidium macrorhizon, Woodwardia japonica, Dendrobium moniliforme, Calanthe aristulifera, and Bulbophyllum inconspicuum. Red list plants as designated by the National Institute of Biological Resources numbered 11 taxa. Naturalized plants numbered 40 taxa.