Bolbitis lianhuachihensis (Dryopteridaceae), a new species from Taiwan.

Yi-Shan Chao,Ho-Yih Liu,Shi-Yong Dong,Yao-Moan Huang,Yu-Fang Huang

doi:10.3897/phytokeys.131.36548

Abstract

A new species of Bolbitis, B. lianhuachihensissp. nov., was found in central Taiwan. It most resembles B. virens var. compacta and B. hainanensis. A phylogenetic tree of Taiwanese and other Asian species of Bolbitis species supports the recognition of the new species. Morphologically, the combination of anastomosing venation and fewer sterile pinnae are critical characters to discriminate B. lianhuachihensis from other Taiwanese Bolbitis species. Bolbitis lianhuachihensis can be further distinguished from B. virens var. compacta and B. hainanensis by having lanceolate sterile pinnae and absent or fewer free veinlets in small areoles of sterile pinnae. The morphological descriptions, illustration, ecology and distribution of the new species are presented. A key to all Taiwanese Bolbitis is also provided.

Highlights

Bolbitis Schott is a pantropical genus that belongs to Dryopteridaceae and consists of about 80 species (Moran et al 2010a; PPGI 2016)
We examined the phylogenetic relationship of these plants to existing Bolbitis species in Taiwan and to other similar species
The venation in sterile fronds of the unknown plant, Bolbitis hainanensis, B. virens var. compacta and other Bolbitis species in Taiwan is illustrated in Fig. 2, showing one Characters Texture of laminae Size of fertile pinnae Number of lateral pinnae of sterile fronds Sterile pinna shape Size of sterile pinnae Bases of sterile pinnae Margins of sterile pinnae Veinlets with an angle to costae of sterile pinnae Row number of areoles between the costae and margins in sterile fronds Free veinlets in areoles of sterile fronds

Summary

Introduction

Bolbitis Schott is a pantropical genus that belongs to Dryopteridaceae and consists of about 80 species (Moran et al 2010a; PPGI 2016). We compared the morphological characteristics of the undescribed plant, especially with regards to lamina venation, with other species of Bolbitis in Taiwan.

Results

Conclusion