The Fern Genus Arachniodes (Dryopteridaceae): A New Record for the Flora of Vietnam

Abstract

This paper presents a new record of the fern genus Arachniodes Blume from Vietnam, Arachniodes simplicior. The paper provides a detailed description of the new species based on the traditional morphological method, of which micro morphological characters of spores were firstly described based on the specimens collected from Quang Binh (Minh Hoa district), Vietnam. In addition, type materials of A. simplicior were analyzed and a specimen from MAK (MAK012702) was designated as a lectotype.

Twelve new records of pteridophytes from Bolaven Plateau, southern Laos

“…in Thailand, 15 spp. in Vietnam (Lu, 2018;Linh et al, 2020), no species has been recorded in Laos (Lindsay & Middleton, 2012-continuously updated;Newman et al, 2017-continuously updated) and Cambodia (Lindsay & Middleton, 2012-continuously updated;Cho et al, 2016); this is the first record of the genus Arachniodes with voucher specimens in the country. Arachniodes pseudoassamica has been known to endemic to Yunnan of China (He et al, 2013) and is characterized by pale brown scales, lamina 2-pinnate, brownish green when dried, and abruptly narrowed toward apex, with a distinct caudate terminal pinna, and sori 1-4 pairs per ultimate segment, located on medial between costule and margin.…”