Pisonia umbellifera (J.R.Forster & G.Forster) Seemann (1862: 154)

Ohi-Toma, Tetsuo, Watanabe-Toma, Kana & Murata, Jin, 2015, Typification of Angiospermae described from the Bonin Islands 2: Archichlamydeae, Phytotaxa 227 (1), pp. 35-44 : 41

Pisonia umbellifera (J.R.Forster & G.Forster) Seemann (1862: 154)

≡ Ceodes umbellifera J.R.Forster & G. Forster (1775: 142)

Type:—[icon] J. R. Forster & G. Forster, Characteres Generum Plantarum, t. 71 (1775, holotype).

= Pisonia nishimurae Koidzumi (1919: 120)

≡ Calpidia nishimurae (Koidz.) Rehder & E.H.Wilson (1919: 117)

Type (lectotype, designated here):— JAPAN. Bonin, without date, M. Yai s.n. ( TI [00670]!).

Additional specimens examined:— JAPAN. Bonin, without date, S. Nishimura s.n., “ Pisonia nishimurai Koidz. ” (syntype, KYO!).

Distribution:— Japan (the Bonin Islands and the Ryukyu Islands), Taiwan, Malaysia, Micronesia, Polynesia and Australia.

Notes:—In the protologue of Pisonia nishimurae, Koidzumi (1919) did not designate the type, but indicated “Distr. Bonin, (leg. M. Yai! S. Niseimura!).” When Rehder and Wilson (1919) moved the taxon under the genus Calpidia Thouars (1806: 36) , they regarded “ M. Yai and S. Nishimura, ex Koidzumi” as the type. They probably referred to the protologue, but did not confirm the specimen. Their perception of the collector of the type is a correctable error, because we could not find specimens collected by both M. Yai and S. Nishimura. We found one specimen (M. Yai s.n.) in TI, which is stamped as “Typus,” and two specimens (S. Nishimura s.n.) in KYO, although their collecting date was unknown. Of them, two specimens with Koidzumi’s handwriting of “ Pisonia nishimurai Koidz. ” kept in TI and KYO are original material, but one in KYO with his handwriting of “ Calpidia nishimurai Nakai ” is not. In the protologue, Koidzumi (1919) named “Udoki” as a Japanese name of the taxa. Of the two original material, the specimen in TI was labeled “Udoki” in Japanese, but the specimen in KYO was labeled “Udonoki” in Japanese. Therefore, we designated the specimen (M. Yai s.n., TI [00670]) as the lectotype and the specimen (S. Nishimura s.n., KYO) as the syntype.