Thylacopterisminuta (Polypodiaceae), a new fern species from Myanmar

Kiyotaka Hori; Phyo Kay Khine; Tao Fujiwara; Thant Shin; Harald Schneider

doi:10.3897/phytokeys.199.83107

Thylacopterisminuta (Polypodiaceae), a new fern species from Myanmar

PhytoKeys. 2022 Jun 9:199:141-153. doi: 10.3897/phytokeys.199.83107. eCollection 2022.

Authors

Kiyotaka Hori¹, Phyo Kay Khine², Tao Fujiwara^{2

3}, Thant Shin⁴, Harald Schneider²

Affiliations

¹ The Kochi Prefectural Makino Botanical Garden 4200-6 Godaisan, Kochi 781-8125, Japan The Kochi Prefectural Makino Botanical Garden Kochi Japan.
² Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Mengla, Yunnan 666303, China Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences Mengla China.
³ Makino Herbarium, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan Tokyo Metropolitan University Tokyo Japan.
⁴ Forest Research Institute, Yezin, Nay Pyi Taw, Myanmar Forest Research Institute Yezin Myanmar.

Abstract

The genus Thylacopteris is a small, phylogenetically isolated genus belonging to the fern family Polypodiaceae. This study describes a new species, Thylacopterisminuta, based on collections obtained during field surveys of Shan State, Myanmar. This new species is distinct from other species of Thylacopteris in its small size and presence of sclerenchyma strands in the rhizome. This species is also distinct from the only other species of Thylacopteris with molecular data available, T.papillosa, in a plastid rbcL phylogeny of Polypodiaceae. This new discovery of Thylacopteris from Myanmar suggests that this genus is still overlooked in Southeast Asia.

Keywords: Myanmar; Polypodiaceae; Thylacopteris; new species.

Kiyotaka Hori, Phyo Kay Khine, Tao Fujiwara, Thant Shin, Harald Schneider.