- 著者
- Kenji Suetsugu Alberto Bruno Izai Sabino Kikuchi Monica Suleiman Hirokazu Tsukaya
- 出版者
- 日本植物分類学会
- 雑誌
- Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
- 巻号頁・発行日
- vol.68, no.2, pp.117-121, 2017 (Released:2017-09-12)
Several new populations of the mycoheterotrophic orchid Kalimantanorchis nagamasui from Sabah, Borneo, Malaysia, are reported. The species was previously considered endemic to West Kalimantan, Borneo, Indonesia. Given that the continued discovery of new species and distributional records of mycoheterotrophic plants have been made from only a limited number of surveys in a small selection of sites, it is likely that further surveys in Borneo will reveal additional occurrences. The description of the morphology, in particular on the underground parts and size variation, of K. nagamasui is also updated.
- 著者
- Hiroyuki AKIYAMA Rimi REPIN Monica SULEIMAN
- 出版者
- Hattori Botanical Laboratory
- 雑誌
- Hattoria (ISSN:21858241)
- 巻号頁・発行日
- vol.12, pp.51-92, 2021 (Released:2021-08-18)
Re-examination of morphological features and newly executed molecular analysis based on chloroplast (rbcL, rps4, and trnL-F) and nuclear (ITS1&2) genomes revealed unexpected diversity in Symphyodon perrottetii Mont. s. l. (Symphyodontaceae) in East and Southeast Asia. Japanese plants previously recognized as S. perrottetii are shown to include at least five different species: S. asper (Mitt.) A.Jaeger, S. copelandii Broth., S. gollanioides Nog., S. recurvomarginatus (Dixon & Sakurai) H.Akiyama, comb. nov. and S. rheophilus H.Akiyama, sp. nov. In addition, previous Japanese record of S. echinatus (Mitt.) A.Jaeger is actually S. asper. Symphyodon longispinosus H.Akiyama, sp. nov. from southwestern China is newly described. Subsequently, S. perrottetii s. str. is excluded from China and Japan and has its revised distribution range from southwest India (type locality of S. perrottetii), Sri Lanka, central Thailand, and Singapore. Symphyodon merrillii Broth., once regarded as a synonym of S. perrottetii, is again recognized as a distinct species with its distribution in Malesia and Indochina. Symphyodon ovalifolius H.Akiyama & M.Suleiman, sp. nov. is described and classified under the subgenus Parasymphyodon H.Akiyama & M.Suleiman, subg. nov. Rheoshevockia fontana Ignatov, W.Z.Ma & D.G.Long is again demonstrated to have a unique systematic position sister to the genus Symphyodon.