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이창숙,Chie Tsutsumi,Tomohisa Yukawa,이남숙 한국식물학회 2010 Journal of Plant Biology Vol.53 No.3
Two new species of Liparis Rich. (Orchidaceae)from Korea are described: Liparis yongnoana and Liparis pterosepala. Liparis yongnoana is similar to plants called as L. japonica and L. makinoana in having an anther cap with a beaked apex and a weakly reflexed labellum. However, L. yongnoana can be distinguished from them by a presence of a narrowly elliptic line on a labellum, a less emarginated apex of a more reflexed labellum, a short column, and a few flowers. L. pterosepala is similar to Liparis kumokiri, Liparis koreojaponica, and Liparis fujisanensis in having an anther cap with a mucronate apex and an excessively reflexed labellum. But L. pterosepala can be distinguished from the three similar taxa by its wide sepals and its early flowering time. Based on the molecular data using nuclear internal transcribed spacer (ITS) and cpDNA regions (matK, trnS-trnG, trnL with trnL-trnF), L. yongnoana has five autapomorphic substitutions in ITS region and four substitutions and one deletion in cpDNA. Another new taxon, L. pterosepala, has one autapomorphy in ITS and cpDNA regions, respectively. A molecular phylogeny also indicates that L. yongnoana is close to plants called as L. japonica and L. makinoana, and L. pterosepala is close to L. kumokiri, L. koreojaponica, and L. fujisanensis.
A New Species of Goodyera (Orchidaceae: Orchidoideae) from Korea and Japan
Oh Sang-Hun,Suh Hwa-Jung,Seo Seon-Won,Chung Kyong-Sook,Yukawa Tomohisa 한국식물학회 2022 Journal of Plant Biology Vol.65 No.5
A new species, Goodyera crassifolia (Orchidaceae: Orchidoideae; Cranichideae), distributed on offshore islands in southwestern Korea and in Japan, is described and illustrated. It is a terrestrial orchid characterized by having thick and fleshy leaves with pale green markings on the midrib and mottled with pale green markings on the lateral veins of the adaxial surface, erect and weakly oblique lateral sepals, lateral column appendages, and one-to-three rostella. Plants of G. crassifolia have been misidentified as G. schlechtendaliana. The two species often co-occur, but G. schlechtendaliana blooms earlier than G. crassifolia, showing a gap in their flowering times. Plants of G. schlechtendaliana flower from late August to early September, whereas those of G. crassifolia bloom from late September to early October. The chromosome number of G. crassifolia is 2n = 60, twice as many as the chromosome number of G. schlechtendaliana.
Mi Yoon Chung,Sung-Won Son,정재민,Jordi LÓPEZ-PUJOL,Tomohisa Yukawa,정명기 한국식물분류학회 2019 식물 분류학회지 Vol.49 No.2
The taxonomic rank of the tiny-leaved terrestrial orchid Cephalanthera subaphylla Miyabe & Kudô has been somewhat controversial, as it has been treated as a species or as an infraspecific taxon, under C. erecta (Thunb.) Blume [C. erecta var. subaphylla (Miyabe & Kudô) Ohwi and C. erecta f. subaphylla (Miyabe & Kudô) M. Hiro]. Allozyme markers, traditionally employed for delimiting species boundaries, are used here to gain information for determining the taxonomic status of C. subaphylla. To do this, we sampled three populations of five taxa (a total of 15 populations) of Cephalanthera native to the Korean Peninsula [C. erecta, C. falcata (Thunb.) Blume, C. longibracteata Blume, C. longifolia (L.) Fritsch, and C. subaphylla]. Among 20 putative loci resolved, three were monomorphic (Dia-2, Pgi-1, and Tpi-1) across the five species. Apart from C. longibracteata, there was no allozyme variation within the remaining four species. Of the 51 alleles harbored by these 17 polymorphic loci, each of the 27 alleles at 14 loci was unique to a single species. Accordingly, we found low average values of Nei’s genetic identities (I) between ten species pairs (from I = 0.250 for C. erecta versus C. longifolia to I = 0.603 for C. falcata vs. C. longibracteata), with C. subaphylla being genetically clearly differentiated from the other species (from I = 0.349 for C. subaphylla vs. C. longifolia to 0.400 for C. subaphylla vs. C. falcata). These results clearly indicate that C. subaphylla is not genetically related to any of the other taxa of Cephalanthera that are native to the Korean Peninsula, including C. erecta. In a principal coordinate analysis (PCoA), C. subaphylla was positioned distant not only from C. falcata, C. longibracteata, and C. longifolia, but also from C. erecta. Finally, K = 5 was the best clustering scheme using a Bayesian approach, with five clusters precisely corresponding to the five taxa. Thus, our allozyme results strongly suggest that C. subaphylla merits the rank of species.