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Trachelospermum gracilipes Hooker (1882: 668) var. liukiuense (Hatus.) Kitamura (1962: 148). Distribution: Japan (Bonin Islands, Ryukyu Islands, Yakushima), Taiwan (Lanyu Island). = T. jasminoides Lemaire (1851: pl. 61) subsp. foetidum Matsumura & Nakai (1908: 153) T. foetidum (Matsum. & Nakai) Nakai (1922: 21–22). Lectotype (designated here) — JAPAN: Bonin Hahajima Chibusa-yama: 6 Aug. 1905, H. Hattori s.n. (TI [44050]!). In the first publication of Trachelospermum jasminoides Lem. subsp. foetidum Matsum. & Nakai (1908) and its subsequent treatment by Nakai (1922), no specimen was cited and no infomation on a collector or locality was provided. But Nakai (1922) cited “ T. jasminoides, (non Lemaire) in Hattori (1908) ”. Hattori (1908), which was published in June, was based on the speciems gathered by H. Hattori in the Bonin Islands in 1905. In relation to this publication, we found one specimen (H. Hattori s.n., 6 Aug. 1905) at TI. Because there are no other expedition records of the botanical research in the Bonin Islands from 1906 to 1911 (Tuyama 1970; Nakai 1928b), and because Matsumura & Nakai (1908) was published on November, Matsumura & Nakai (1908) must have been based on the Hattori’s specimen at TI. Thus, although this specimen contains neither J. Matsumura’s nor T. Nakai’s handwritten labels on it, it is considered as the original material of this taxon and is designated as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on page 54, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Hooker, J. D. (1882) The flora of British India. vol. 3. Reeve & Co., Ltd. NR. Ashford, Kent.","Kitamura, S. (1962) Trachelospermum gracilipes Hooker f. var. liukiuensis (Hatusima) Kitamura. Acta Phytotaxonomica et Geobotanica 20: 148.","Lemaire, C. (1851) Le Jardin Fleuriste. vol 1. Gand: F. et E. Gyselynck.","Matsumura, J. & Nakai, T. (1908) Diagnosis plantarum novarum Japonicarum. Botanical Magazine (Tokyo) 22: 151 - 154.","Nakai, T. (1922) Notulae ad plantas Japoniae et Koreae XXVI. Botanical Magazine (Tokyo) 36: 19 - 27.","Hattori, H. (1908) Pflanzengeographische studien uber die Bonin-Inseln. The journal of the College of Science, Imperial University of Tokyo 23: 1 - 64.","Tuyama, T. (1970) Ogasawara-no-Shizen. Hirokawa Publishing Co., Tokyo, pp. 137 - 139.","Nakai, T. (1928 b) Ogasawara-no-Shokubutsu II. Rigakkwai 26 (5): 1 - 11."]}

Erechtites hieraciifolius (L.) Raf. ex DC. (1838: 294) var. cacalioides (Fish. ex Spreng.) Grisebach (1864: 381). Distribution: a native of troical America, invasive in other tropical regions. = Senecio muninensis Koidzumi (1919: 218–219) Lectotype (designated here)— JAPAN: Bonin Chichijima Susaki: 21 Mar. 1917, S, Nishimura 4 (TI [39895]!). Syntypes — JAPAN: Bonin Chichijima Susaki: 15 Dec. 1912, S. Nishimura 124 (TI [39899]!); Bonin Chichijima Susaki: May 1915, S . Nishimura 561 (TI [39896]!); Bonin Chichijima Oomura: Mar. 1912, B . Kawate Hei8 (TI [39897]!); Bonin Chichijima Susaki: 21 Mar. 1917, S , Nishimura s.n. (KYO!). In the protologue of Senecio muninensis, Koidzumi (1919) cited four specimens as “Bonin: insl. Chichishima (lg. S. Nishimura! no. 4, III. 21, 1917; no. 24, I. 12, 1915; no. 561, V. 1915) (lg. B. Kawate! no. 8, III. 1912)”. Three of these specimens were identified as bearing Koidzumi’s handwriting and are housed at TI. We could not find the second specimen “no. 24, I. 12, 1915 ”, however, another specimen (S. Nishimura 124, “1. 12. 15.”) was also found at TI. After comparison with other Nishimura’s specimens, we found that the numbers of “1. 12. 15.” indicated “the first year of the Taisho Era (= 1912), Decmber 15”. Thus, Koidzumi (1919) must have misread “no. 124, 1 (1912). 12 (XII). 15 (15 th)” as “no. 24, I. 12 th, 1915” for the second specimen. Aside from these specimens, we found one without a collector’s number (Bonin Chichijima Susaki, S. Nishimura s.n., 21 March 1917) at KYO, which was collected on the same date as the specimen cited first in the protologue. It most likely corresponds to the specimen “ 21 mars 1917 S. Nishimura” cited by Kitamura (1934), who recorded this name as a synonymy for Erechtites hieraciifolius var. cacalioides. This specimen lacks a collector’s number, but is probably a duplicate specimen found at TI. Of the four original specimens at TI, G. Koidzumi identified one specimen as Senecio muninensis, but the others had been previously identified as a different taxon and revised by Koidzumi. Thus, we select the former specimen (S. Nishimura 4, 21 March 1917) as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on pages 55-56, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Grisebach, A. H. R. (1864) Flora of the British West Indian Islands. L. Reeve, London.","Koidzumi, G. (1919) Contributiones ad floram Asiae orientalis. Botanical Magazine (Tokyo) 33: 217 - 223.","Kitamura, S. (1934) Compositae novae Japonicae VII. Acta Phytotaxonomica et Geobotanica 3: 97 - 111."]}

Erechtites valerianifolius DC. (1838: 295). Distribution: a native of troical America, invasive in other tropical regions. = Senecio boninsimae Yatabe (1893: 1–3) Lectotype (designated here)—Bot. Mag. (Tokyo) vol. 7, plate II. 1893. No specimens were cited in the protologue of Senecio boninsimae, but one detailed drawing (plate II) was provided. Kitamura (1934) recorded this name as a synonym for Erechtites valerianifolius DC., citing “Bonin (S. Nishimura)”. The specimens collected by S. Nishimura were found at TI, but specimens collected before 1893 have not been found in any herbaria. Because we have not found adequate specimens that could serve as the type of this taxon in any herbaria, “plate II” should be regarded as the lectotype (ICBN Art. 9.2.)., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on page 56, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Yatabe, R. (1893) New or little known plants of Japan. Botanical Magazine (Tokyo) 7: 1 - 3.","Kitamura, S. (1934) Compositae novae Japonicae VII. Acta Phytotaxonomica et Geobotanica 3: 97 - 111."]}

Rhododendron boninense Nakai (1920: 324) Lectotype (designated here)— JAPAN: Bonin Chichijima Tsutsuji-yama: 8 July 1920, T. Nakai s.n. (TI [43237a]!; isolectotype: TI [43237b]!). Distribution: Japan (Chichijima in the Bonin Islands). Rhododendron boninense was described as a new taxon in Japanese, without citation of specimens (Nakai 1920). In the description of morphological characters of the species, Nakai mentioned that he examined withered flowers with stamens and a pistil because the flowering season was over. The following year, the species was redescribed in Latin based upon specimens collected from Tsutsuji-yama on Chichijima by T. Nakai and H. Toyoshima (Nakai 1921). Toyoda (1981) and Yamazaki (1996) considered that the Nakai’s (1921) description of the species was valid and recognized the specimen with flowers (H. Toyoshima s.n., 1921, TI) as the holotype of the species. However, ICBN Art 36.1. states that after 1 January 1935 the name of a new taxon must be accompanied by a Latin description or diagnosis or by a reference to a previously and effectively published Latin description or diagnosis (McNeill et al. 2006). Conversely, names with a description or diagnosis written in Japanese are valid before 1935. Therefore, the valid publication of this taxon is not Nakai (1921) but Nakai (1920). In this case, no claim can be made that the specimen collected by H. Toyoshima in 1921 is the holotype. The specimen (T. Nakai s.n., 8 July 1920, TI) collected in Tsutsujiyama on Chichijima, which consists of two branches with withered flowers, is consistent with the original description in Japanese (Nakai 1920). Therefore, we choose the larger of the two branches as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on pages 52-53, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Nakai, T. (1920) Ogasawara-no-tsutsuji. Botanical Magazine (Tokyo) 34: 324.","Nakai, T. (1921) Notulae ad plantas Japoniae et Koreae XXV. Botanical Magazine (Tokyo) 35: 139 - 153.","Toyoda, T. (1981) Flora of Bonin Islands. Aboc Co. Ltd., Tokyo.","Yamazaki, T. (1996) A revision of the genus Rhododendron in Japan, Taiwan, Korea and Sakhalin. Tsumura Laboratory, Tokyo.","McNeill, J., Barrie, F. R., Burdet, H. M., Demoulin, V., Hawksworth, D. L., Marhold, K., Nicolson, D. H., Prado, J., Silva, P. C., Skog, J. E., Wiersema, J. H. & Turland, N. J. (Eds) (2006) International Code of Botanical Nomenclature (Vienna Code) adopted by the Seventeenth International Botanical Congress Vienna, Austria, July 2005. A. R. G. Gantner Verlag, Ruggell. [Regnum Veg. 146]"]}

Geniostoma glabrum Matsumura (1901: 41) Lectotype (designated here) — JAPAN: Bonin: without date, without collector’s name “33. Bonin Max” (TI [44046a]!; isolectotype: TI [44046b]!). Syntypes — JAPAN: Bonin: 9 Dec. without year, without collector’s name (TI [44047]!); Bonin: without date, without collector’s name (TI [44048]!). Distribution: Japan (Bonin Islands). = G. kasyotense Kanehira & Sasaki (1934: 400–401). In the protologue of Geniostoma glabrum, Matsumura (1901) cited a single specimen as “Hab. ins. Bonin (K. Sawada et T. Uchiyama)”. Toyoda (1981) cited the specimen (Sawada and Uchiyama s.n., 1879, TI) as the type. However, no specimens that have these two collecters’ names on the label have been found in any herbaria. One of the collectors, T. Uchiyama, was known as an assistant in the Japanese botanical research team of Tokyo Imperial University, which conducted field expeditions in the Bonin Islands in 1879 (Nakai 1928a). Most specimens collected during the expedition lack information about locality, collection data and collectors on the label (Tuyama 1941). However, a decision as to whether the specimens were actually collected in 1879 can be made based on the label data and the handwritings of the identifier. For example, the abbreviation “Max”, on labels and in descriptions, indicates specimens whose duplicates were sent to C.J. Maximowicz (Tuyama 1941). Three specimens, which were labelled with J. Matsumura’s handwriting as “ Geniostoma glabrum Matsum. ”, were kept at TI and one of them was marked with R. Yatabe’s handwriting “33. Bonin Max”. As J. Matsumura worked at TI and R. Yatabe was one of the major members of the 1879 Japanese botanical research team, we choose the one with flowers of two branches of this specimen (“33. Bonin Max”) as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on page 54, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Matsumura, J. (1901) Notulae ad plantas Asiaticas orientales. Botanical Magazine (Tokyo) 15: 37 - 41.","Kanehira, R. & Sasaki, S. (1934) New trees from Botel Tabago and Kasyoto Islands. Transaction of the Natural History Society of Taiwan 24: 397 - 402.","Toyoda, T. (1981) Flora of Bonin Islands. Aboc Co. Ltd., Tokyo.","Nakai, T. (1928 a) Ogasawara-no-Shokubutsu I. Rigakkwai 26 (4): 1 - 10.","Tuyama, T. (1941) Miscellaneous. Journal of Japanese Botany 17: 116 - 118."]}

Planchonella obovata (R.Br.) Pierre (1890: 35) var. dubia (H.Hara) T. Yamazaki (1993: 98) Sideroxylon dubium Koidz. ex Nakai (1928b: 7) [nom. nud.]; Nakai (1930: 261) [nom. nud.]. Pouteria obovata (R.Br.) Baehni (1942: 324–326) var. dubia H. Hara (1948: 100). Planchonella obovata (R.Br.) Pierre (1890: 35) var. dubia (H.Hara) Hatusima (1973: 30) [comb. nud.]. Lectotype (designated here) — JAPAN: Bonin Chichijima: Jan. 1918, S. Nishimura 31 (TI [43571a]!; isolectotypes: TI [43571b]! and TI [43571c]!). Original material— JAPAN: Bonin Chichijima Takeda-bokujyo: 1 July 1917, S. Nishimura s.n. (KYO!). Distribution: Japan (Bonin Islands, Daito Islands). Nakai (1928b, 1930) first reported this taxon as “ Sideroxylon dubium Koidzumi ”, but this name was nomen nudum. Hara (1948) validly published Pouteria obovata (R.Br.) Baehni var. dubia H.Hara, with a short description consisting of two Latin words, and citated the name of S. dubium Koidz. ex Nakai (1928b). Hara (1984) did not cite any specimens, but circumstantial evidence suggests that the specimens annotated by G. Koidzumi before 1928 should be considered original material for this variety. In each of TI and KYO, a specimen identified as “ Sideroxylon dubium Koidzumi ” with the handwriting of G. Koidzumi was found. When Hara (1948) published the name, he was a professor at TI. Therefore, the largest of three branches of the specimen at TI (S. Nishimura 31, January 1918) is selected as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on page 53, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Pierre, J. B. L. (1890) Notes botaniques Sapotacees Fasc. 1. Librairie des sciences naturelles, Paul Klincksieck, Paris.","Yamazaki, T. (1993) Myrsinaceae and Sapotaceae. In: Iwatsuki, K., Yamazaki, T., Boufford, D. E. & Ohba, H. (Eds), Flora of Japan. Kodansha Co. Ltd., Tokyo, vol. IIIa pp. 76 - 78 and 98 - 99.","Nakai, T. (1928 b) Ogasawara-no-Shokubutsu II. Rigakkwai 26 (5): 1 - 11.","Nakai, T. (1930) The flora of Bonin Islands. Bulletin of the Biogeographical Society of Japan 1: 249 - 293.","Baehni, C. (1942) Memoires sur les Sapotacees. II. Le genre Pouteria. Candollea 9: 147 - 476.","Hara, H. (1948) Enumeratio Spermatophytarum Japonicarum 1. Iwanami Shoten Co. Ltd., Tokyo.","Hatusima, S. (1973) Daitoujima-no-Syokubutu. In: Agency for Cultural Affair (Ed), Daitoujima Tennen-Kinenbutu Tokubetu Chousa-Houkoku. Agency for Cultural Affairs, Tokyo, pp. 9 - 42."]}

Psychotria boninensis Nakai (1927: 560). P. macrophylla Hayata (1920: 62) [nom. illeg. non P. macrophylla Ruiz & Pav. (1799: 56)]. Lectotype (designated here)— JAPAN: Bonin Chichijima Futago-yama: 22 July 1905, H. Hattori s.n. (TI [44077]!). Syntypes — JAPAN: Bonin Chichijima Renjyudani: 14 July 1905, H . Hattori s.n. (TI [44078]! and TI [44079]!); Bonin Chichijima Asahi-yama: 25 July 1905, H . Hattori s.n. (TI [44080]!). Distribution: Japan (Bonin Islands). This taxon was first published validly as Psychotria macrophylla Hayata, with the citation “Chichijima, leg. H. Hattori. 1905” (Hayata 1920). However, this name was illegitimate because it is a later homonym of “ P. macrophylla Ruiz & Pav. (1799) ”. Therefore, Nakai (1927) published a new name P. boninensis for this taxon, citing three synonyms: P. serpens (non Linnaeus) Hattori (this name is nomen nudum), P. macrophylla Hayata (1920) and P. serpens L. var. macrophylla Koidz. (1918). The latter two names have the same epithet “ macrophylla ” but they are considered to represent different taxa because Hayata (1920) did not cite the name of P. serpens L. var. macrophylla Koidz. We consider that the basionym of P. boninense Nakai is P. macrophylla Hayata not P. serpens L. var. macrophylla Koidz.. Therefore, the specimen (T. Nakai s.n., 1920, TI), which Toyoda (1981) regarded as the type of this taxon, is inappropriate. In TI, we found four specimens that were collected by H. Hattori in 1905 and that were identified as P. macrophylla Hayata with B. Hayata’s handwriting. It is considered that these specimens are multiple gatherings collected on different days in July 1905 and syntypes of this taxon. Of the four specimens, we selected the specimen (H. Hattori s.n., 22 July 1905), which also included the identification as P. boninensis Hayata (nom. nud.) with B. Hayata’s handwriting, as the lectotype. = Psychotria serpens L. (1771: 204–205) var. macrophylla Koidz. (1918: 135) Lectotype (designated here) — JAPAN: Bonin Chichijima Sakai-ura: April 1915, S. Nishimura 563 (TI [44076]!). Original materials— JAPAN: Bonin Chichijima Sakai-ura: May 1914, S. Nishimura 333 (TI [44075]!). No specimens were cited in the protologue of Psychotria serpens L. var. macrophylla Koidz. (1918). We found only two specimens colleted before 1918, identified with G. Koidzumi’s handwriting as “ Psychotria serpens L. var. macrophylla Koidzumi ” at TI. Because G. Koidzumi was based at TI when he published the name, the TI specimens are appropriate for the type of this taxon (ICBN Art. 9A.4.). Of the two, we selected the specimen (S. Nishimura 563, April 1915), which also has the Japanese name with G. Koidzumi’s handwriting on the label, as the lectotype., Published as part of Watanabe-Toma, Kana, Ohi-Toma, Tetsuo & Murata, Jin, 2011, Typification of Angiospermae described from the Bonin Islands 1: Metachlamydeae, pp. 51-58 in Phytotaxa 33 on pages 54-55, DOI: 10.11646/phytotaxa.33.1.4, http://zenodo.org/record/4894593, {"references":["Nakai, T. (1927) Gamopetalae or Metachlamydeae in: Nakai, T. & Koidzumi, G., Trees and shrubs indigenous in Japan proper 1, revised edition. Seibido Shoten, Tokyo.","Hayata, B. (1920) Contributions to the flora of Formosa. Icones Plantarum Formosanarum 9: 1 - 155.","Toyoda, T. (1981) Flora of Bonin Islands. Aboc Co. Ltd., Tokyo."]}