Taxonomic studies on Zingiber (Zingiberaceae) in China I: Zingiber kerrii and the synonymy of Z. menghaiense and Z. stipitatum

Abstract

A general introduction to Zingiber is provided, along with an outline of the materials and methods used in this paper and which are to be used in our subsequent taxonomic studies on Zingiber in China. Based on an investigation of the protologues, and on comparisons of both the type specimens and living materials collected from the type localities and their immediate vicinities. Zingiber stipitatum S.Q.Tong and Z. menghaiense S.Q.Tong are here reduced to synonymy under Z. kerrii Craib. A previous lectotypification of Zingiber kerrii is discussed and amended. The existence of mixed collections among the isotypes of Zingiber stipitatum is highlighted and a proposal to exclude the vegetative parts belonging to Z. neotruncatum from the type material is made. A description and a colour plate of Zingiber kerrii based on a collection from China are provided.

Unravelling the identity and nomenclatural history of Zingiber montanum, and establishing Z. purpureum as the correct name for Cassumunar ginger

“…The materials and methods for this study follow those of our work on Zingiber in China (Bai & al., 2015a). Names particularly relevant to the current study were identified based on the protologues, all previously published taxonomic works dealing with the genus Zingiber, regional flora treatments and various databases, e.g., Zingiberaceae Resource Centre , World Checklist of Selected Plant Families (Govaerts & al., 2018) and Tropicos (2019).…”

“…A more detailed introduction to Zingiber and its currently accepted sectional classification, with a focus on the species in China, is given in Bai & al. ().…”

“…(). In connection with revisionary studies of Chinese Zingiber (Bai & al., ,b, , ,b), significant discrepancies were noted between the protologue of Z. montanum and plants of Cassumunar ginger in China. This reignited the doubts concerning the correct identity of Z. montanum .…”

“…However, numerous other species are of local economic importance and are often cultivated for their medicinal properties, as vegetables or ornamentals (Lock, 1999). A more detailed introduction to Zingiber and its currently accepted sectional classification, with a focus on the species in China, is given in Bai & al. (2015a).…”

Nine new Zingiber species (Zingiberaceae) from Vietnam

“…The terminology follows Beentje (2012) and our recent works cited above. The recognition of labellum and lateral staminodes as separate structures and the methodology of their measurements follow the recent work of Bai et al (2015). Similar to Zingiber emeiense Z.Y.Zhu in having purple-white flowers, but differs in the narrowly ovate to narrowly elliptic leaves (15-20 × 3.5-4 cm), short ligules (c. 1-2 mm, shallowly bilobed), pure white corolla lobes, purple to dark violet labellum with white blotches and pure white lateral staminodes (vs. laminae 25-35 × 6-9 cm; ligules papery, bifid, c. 7 mm long; red corolla lobes, and both labellum and lateral staminodes purple).…”