Six new species of Zingiber (Zingiberaceae) from Borneo

Abstract

Six new species of the genus Zingiber from Borneo are presented. Z viridiflavum was collected in primary lowland forest, while Z chlorobracteatum was collected in hilly secondary forest. Both are characterized by their slender fusiform inflorescences with yellow‐green bracts. Z. flagelliforme found in primary lowland forest displays a peculiar reproduction habit in its tapering leafy shoots which bend over to trail on the ground where plantlets produced in the leaf‐axis take root. Z velutinum was found in mid‐elevation secondary forest. It is a tall plant with large ovate inflorescences and bright red, densely hairy bracts. Z phillippsii was found in a gulley in montane primary forest. It is vegetatively characterized by its purple stems and glabrous leaves while the inflorescence has a similarity to the common Bornean species Z. coloratum. Z. georgeii is distinct by its procumbent inflorescences with orange bracts. Z viridiflavum, Z. chlorobracteatum, Z. flagelliforme, Z. phillippsii and Z velutinum are from Sabah and Z georgeii is from Sarawak.

Zingiber: synonymy, accepted and excluded species

“…(Talukdar et al, 2015), Z. bisectum D. Fang (Fang and Qin, 1996), Z. brachystachys Triboun & K.Larsen (Triboun et al, 2014), Z. bradleyanum Craib (Craib, 1912), Z. brevifolium N.E.Br. (Brown, 1886), Z. bulusanense Elmer (Elmer, 1915(Elmer, -1919 (Biseshwori and Bipin, 2018), Z. cernuum Dalzell (Dalzell and Esq, 1852), Z. chataranothaii Triboun & K. Larsen (Triboun et al, 2014) (Wang et al, 2020), Z. chlorobracteatum Mood & Theilade (Theilade and Mood, 1999b), Z. chrysanthum Roscoe (Roscoe, 1824), Z. chrysostachys Ridl. (Ridley, 1899), Z. citriodorum Theilande & Mood (Mood and Theilade, 2002), Z. clarkei King ex Baker (Baker, 1894), Z. cochleariforme D. Fang (Fang, 1980), Z. collinsii Mood & Theilade (Theilade and Mood, 1999a), Z. coloratum N.E.Br.…”

“…Xia (Tong and Xia, 1987), Z. discolor Skornick., Tran, Rybková (Leong-Skornicková et al, 2015), Z. eberhardtii Gagnep. (Gagnepain, 1907a), Z. eborinum Mood & Theilade (Theilade and Mood, 1997b), Z. elatius (Ridl.) Theilade (Theilade, 1998), Z. elatum Roxb.…”

“…L. Bai, Juan Chen & N.H. Xia (Chen et al, 2019) (Theilade, 1999), Z. fragile S.Q. Tong (Tong and Xia, 1987), Z. fraseri Theilade (Theilade, 1998), Z. georgeai Mood & Theilade (Theilade and Mood, 1999b), Z. gracile Jack (Jack, 1820(Jack, -1822, Z. gramineum Noronha ex Blume (Blume, 1827), Z. griffithii Baker (Baker, 1894), Z. guangxiense D.Fang (Fang, 1980), Z. gulinense Y.M. Xia (Xia, 1996), Z. hainanense Y.S.…”

Zingiber pseudosquarrosum sp. nov. (Zingiberaceae) from Andaman and Nicobar Islands, India

“…(Zingiberaceae) was described by Miller in 1754 and subsequently explored by various workers (Roxburgh , Fischer ). Zingiber is represented by 141 species and distributed throughout tropical Asia including China, Japan and tropical Australia (Theilade , Theilade and Mood , Larsen and Larsen , Chaveerach et al ). Of these, 20 species are reported from India (Sabu et al , , Sujanpal and Sasidharan , Kishor and Leong‐Skornickova , Kumar et al , Thongam et al , Thongam and Konsam ), while only 7 species including the one described herein occur in the Andaman and Nicobar Islands.…”

Zingiber nanlingensis sp. nov. (Zingiberaceae) from Guangdong, China

“…During the past decades, several new species have been published, such as Zingiber gulinense by Xia (1996) and Z. simaoense by Tong (1997) from Yunnan, China, Z. phumiangense from Thailand by Chaveerach et al (2007), and Z. anamalayanum from India by Sujanapal and Sasidharan (2010). Meanwhile, a set of 13 new species from Borneo (Theilade and Mood 1997a, b, 1999a), one from Vietnam (Theilade and Mood 1999b) and two from the Philippines (Mood and Theilade 2001) was reported. Besides, Theilade (1999) compiled a synopsis of 26 Zingiber species in Thailand, including 4 new species.…”