• Title/Summary/Keyword: Morphological taxonomy

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Morphological Study of the Marine Algal Genus Padina (Dictyotales, Phaeophyceae) from Southern Philippines: 3 Species New to Philippines

  • Geraldino, Paul John L.;Liao, Lawrence M.;Boo, Sung-Min
    • ALGAE
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    • v.20 no.2
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    • pp.99-112
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    • 2005
  • This monographic study presents morphological descriptions of eight species of Padina collected from the Visayas and Mindanao regions of southern Philippines, including distributions of each species and a taxonomic key for all the species examined. Of these species, three are new records for the Philippines, namely: P. fernandeziana Skottsberg and Levring, P. jonesii Tsuda and P. moffittiana Abbott and Huisman. One species, P. antillarum (Kützing) Piccone, represents a new nomenclatural record, which is applied to a Philippine species for the first time. Four species previously reported in the Philippines are reconfirmed and described P. australis Hauck, P. minor Yamada, P. boryana Thivy and P. sanctae-crucis Borgesen. All eight species studied have distromatic thalli, except for P. antillarum which is tetrastromatic. Three of these have indusiate sporangia, namely: P. sanctae-crucis, P. moffittianaand P. fernandeziana.

Taxonomy of the Genus Sargassum (Fucales, Phaeophyceae) from Korea I. Subgenus Bactrophycus Section Teretia (한국산 갈조식물 모자반속(Sargassum)의 분류 I. Bactrophycus아속 Teretia절)

  • Oak, Jung-Hyun;Lee, In-Kyu
    • ALGAE
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    • v.20 no.2
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    • pp.77-90
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    • 2005
  • Eight species of Sargassum subgenus Bactrophycus section Teretia were collected from the coasts of Korea: S. confusum C. Agardh, S. pallidum (Turner) C. Agardh, S. muticum (Yendo) Fensholt, S. thunbergii (Mertens ex Roth) Kuntze, S. fulvellum (Turner) C. Agardh, S. hemiphyllum (Turner) C. Agardh, S. nipponicum Yendo, and S. miyabei Yendo. These species were investigated on morphological variations and geographical distribution in Korea. The valuable taxonomic characters between similar species of this section were discussed with special reference to thickness of leaves, types of holdfasts, shape of leaves and vesicle, and length of rhizoids.

A New Record of Sea Urchin (Echinoidea: Echinoida) from Jejudo Island, Korea

  • Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.3
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    • pp.323-326
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    • 2008
  • Some sea urchins were collected from the subtidal rocky bottom of Munseom near Seogwipo, Jejudo Island by SCUBA diving from April to May, 2008 and identified on the basis of their morphological characteristics. Among them, Tripneustes gratilla (Linnaeus, 1758) of Family Toxopneustidae was newly recorded from Korea and redescribed on the specimen collected at a depth of 25 m between Munseom and Sekkiseom. The detailed morphological description was presented with the photographs. This species was characterized by the very naked median areas of ambulacral and interambulacral portions and this genus was the first record in Korea. Eighteen echinoids are so far recorded in Jejudo Island, Korea.

A Newly Recorded Sea Cucumber (Holothuroidea: Aspidochirotida: Synallactidae) from East Sea, Korea

  • Lee, Taekjun;Kim, Donghwan;Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • v.30 no.2
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    • pp.132-136
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    • 2014
  • Five sea cucumbers were collected from Gisamun and Gonghyeonjin of Gangwon-do, in the East Sea, Korea from 27 December 2009 to 14 November 2012. These specimens were classified as Synallactes nozawai Mitsukuri, 1912 belonging to the family Synallactidae of order Aspidochirotida based on morphological characteristics. The family, genus and species are recorded for the first time from Korea. The distinct morphological characteristics of this species are as follows: body flexible, with thin gelatinous body wall; presence of numerous tubercles along dorsal ambulacra table of body wall consisted of three- or four-armed disk and a spire-form pillar. This species usually inhabits the deep sea and is distributed in the Northwest Pacific from northern Japan to Bering Sea.

Distribution and morphological characteristics of Scopolia japonica Maxim. in Korea

  • Jang, Chang Gee;Park, Myung Soon;Nam, Bo Mi;Pak, Hubert H.;Eom, Jeong Ae;Chung, Gyu Young
    • Korean Journal of Plant Taxonomy
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    • v.41 no.3
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    • pp.271-279
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    • 2011
  • The morphological characteristics of the Korean Scopolia japonica Maxim., commonly known as 'Mi-chi-gwang-i-pul' in Korean, were re-evaluated in comparison with results from previous research, while the distribution map was formulated according to existing flora and voucher specimens. The result of the re-evaluation has shown that there are some distinctive discrepancies compared to the previous reports of some characteristics such as the color of the basal stem, numbers of lateral veins, apex shape of calyx and corolla including the color of corolla. The Korean Scopolia japonica Maxim is found throughout Korea except Jeju-do province. The intra-specific species such as S. parviflora (Dunn.) Nakai, S. lutescens Y.N. Lee and S. kwangdokensis Y.N. Lee were treated as synonyms of S. japonica Maxim. in this research.

Taxonomy of the Genus Sargassum (Fucales, Phaeophyceae) from Korea 2. subgenus Bactrophycus section Halochloa and Repentia (한국산 갈조식물 모자반속(Sargassum)의 분류 II. Bactrophycus아속 Halochloa와 Repentia절)

  • Ok, Jeong-Hyeon;Lee, In-Gyu
    • ALGAE
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    • v.21 no.4
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    • pp.393-405
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    • 2006
  • Eight species of Sargassum subgenus Bactrophycus section Halochloa and Repentia were collected from the coasts of Korea: Sargassum coreanum J. Agardh, Sargassum sagamianum Yendo, Sargassum micracanthum (Kützing) Endlicher, Sargassum macrocarpum C. Agardh, Sargassum autumnale Yoshida, Sargassum siliquastrum (Mertens ex Turner) C. Agardh, Sargassum serratifolium (C. Agardh) C. Agardh, Sargassum yezoense (Yamada) Yoshida et Konno. These species were investigated on morphological variations and geographical distributions in Korea. The valuable taxonomic characters between similar species of these section were discussed with special reference to types of holdfasts, shape of main branch, leaves and vesicles.

Two New Records of Monstrilloid Copepods (Crustacea) from Korea

  • Chang, Cheon Young
    • Animal Systematics, Evolution and Diversity
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    • v.30 no.3
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    • pp.206-214
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    • 2014
  • Two monstrilloid copepod species belonging to the genus Monstrilla Dana are newly recorded from Korea: M. grandis Giesbrecht, 1891 and M. hamatapex Grygier and Ohtsuka, 1995. Specimens were obtained from inshore waters around the coasts of South Korea, using a light trap installed at quays and wharves overnight. Based on the Korean specimens, the two species are redescribed, with brief accounts of their affinities and morphological variabilities. Remarkable morphological discrepancies are confirmed in female leg 5 of M. grandis between type material from Southern Hemisphere and European and Asian specimens, which raise a strong doubt on their conspecificity. Korean specimens of M. hamatapex well coincide with the type specimens from Japan, except for some variations in the setal armature of leg 5 and antennules. This is the second taxonomic paper on the monstrilloid copepods in Korea, and the genus Monstrilla is newly added to Korean fauna.

Morphological characteristics, distribution and taxonomic consideration of Chionanthus retusus Lindl. & Paxton in Korea (한국산 이팝나무(Chionanthus retusus Lindl. & Paxton)의 형태학적 특징, 분포 및 분류학적 검토)

  • Song, Jun-Ho;Kong, Min-Jung;Hong, Suk-Pyo
    • Korean Journal of Plant Taxonomy
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    • v.41 no.2
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    • pp.156-163
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    • 2011
  • The morphological characteristics of Chionanthus retusus Lindl. & Paxton in Korea are reviewed in this study through the comparison with its previous records and a distribution map of this species is created using previous flora and voucher specimens. The leaf epidermal micromorphology and the petiole anatomy are also briefly described.

Camellia tuyenquangensis (Theaceae), a new species from Vietnam

  • Le, Ninh Nguyet Hai;Uematsu, Chiyomi;Katayama, Hironori;Nguyen, Lieu Thi;Tran, Ninh;Luong, Dung Van;Hoang, Son Thanh
    • Korean Journal of Plant Taxonomy
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    • v.47 no.2
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    • pp.95-99
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    • 2017
  • Camellia tuyenquangensis (Theaceae), a new yellow species of camellia from the Chiem Hoa district of the Tuyen Quang province in Vietnam, is described and illustrated. Camellia tuyenquangensis is similar to Camellia luongii but different from the latter species in several morphological features: leaves oblong-ovate to narrow elliptic; flowers 1-2; bracteoles glabrous on both sides; sepal margins ciliate; style cleft one half of the length. The morphological data provisionally support its placement in Camellia sect. Chrysantha Chang.

Taxonomic Study on the Lichen Genus Cetrelia (Lecanorales, Ascomycota) in South Korea

  • Luo, Heng;Wei, Xin-Li;Han, Keon-Seon;Koh, Young-Jin;Hur, Jae-Seoun
    • Mycobiology
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    • v.35 no.3
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    • pp.117-123
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    • 2007
  • Seventy-two lichen specimens of Cetrelia collected in South Korea since 2003 were examined by both phenotypic and phylogenetic analyses. The phenotypic analysis was based on morphological and chemical characters, and the phylogenetic analysis was based on nrDNA ITS sequences. The result suggested that the presence and absence of isidia, soredia, lobules and medullar reaction C+ or C- are the important characters in the taxonomy of this genus. Four species of Cetrelia, C. chicitae, C. braunsiana, C. japonica, and C. pseudolivetorum have been identified in this study. Description of each species is presented with morphological and chemical characters. A key to the Cetrelia species is also presented.