<p><strong>A newly recorded genus and twelve newly recorded species of ferns for Vietnam from Lang Biang Plateau</strong></p>

Abstract

One genus (Chrysogrammitis) and twelve species (Asplenium pifongiae, Chrysogrammitis musgraviana, Crepidomanes makinoi, Ctenitis sinii, Ctenopterella khaoluangensis, Didymoglossum wallii, Dryopteris hendersonii, Hymenophyllum palmatifidum, H. paniculiflorum, Polystichum prionolepis, Pteris latipinna, and Stegnogramma wilfordii) of ferns are reported as new records for Vietnam based on newly collected specimens from Lang Biang Plateau. We provide photographs of key characters, type information, voucher specimens, distribution, ecology, and notes for each newly recorded species.

A global phylogeny of grammitid ferns (Polypodiaceae) and its systematic implications

“…This species occurs in southern Thailand, Peninsular Malaysia, and southern Vietnam (Lindsay & Middleton, 2012–; Chen & al., 2020).

Boonkerdia thwaitesii (Bedd.)

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“…Our phylogeny shows that it is not part of Ctenopterella but sister to Tomophyllum. This species occurs in southern Thailand, Peninsular Malaysia, and southern Vietnam (Lindsay & Middleton, 2012-;Chen & al., 2020). Etymology.…”

“…Parris (2007) treated the type of Boonkerdia as a member of Ctenopterella , and this was accepted by subsequent botanists (Lindsay & Middleton, 2012–; Chen & al., 2020). Our phylogeny shows that it is not part of Ctenopterella but sister to Tomophyllum .

Boonkerdia cornigera (Baker) Parris, comb.

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Langbiangia, a new genus of Gesneriaceae endemic to Langbiang Plateau, southern Vietnam and a taxonomic endeavor to achieve key targets of the post-2020 global biodiversity framework

“…e new genus Langbiangia is named after the Langbiang Plateau. Situated in the southern end of the Annamite Mountain Range and bordered by the Provinces Dak Lak, Khanh Hoa, Lam Dong, and Ninh Thuan ( Fig 1 ), Langbiang Plateau is a biodiversity hotspot [ 26 , 28 , 30 ] and a portion of the plateau within Lam Dong Province was designated by UNESCO as Langbiang Biosphere Reserve in 2015 for its high regional biodiversity that also includes many endangered species [ 14 ]. By naming the clade Langbiangia , which is thus far only known from the Langbiang Plateau, we are hoping to raise the conservation awareness of this important heritage of biodiversity of Vietnam.…”

“…(Rafflesiaceae) in Vietnam [28]. Langbiang Plateau is also known as the prime habitats of numerous vascular plant species and in the recent decade, a wide range of vascular plant taxa have also been described and/or recorded, including 16 ferns [29][30][31][32], one Schisandraceae [33], three Lauraceae [33,34], five orchids [35,36], one bamboo [37], one Zingiberaceae [33], one legume [38], one aroid [39], one Menispermaceae [40], one Daphniphyllaceae [33], four stone oaks [41,42], one Euphorbiaceae [43], two Rosaceae [33], two begonias [44], one Clusiaceae [45], one Rutaceae [33], seven camellias [46][47][48][49][50], four Nyssaceae [33,51], one ginseng [52], one Loranthaceae [53], two hollies [33], one Icacinaceae [33], one Symplocaceae [33], one Rubiaceae [54], and five gesneriads [55][56][57][58]. However, the rich and unique biological diversity of the Langbiang Plateau has continuously been threatened by growing land demands for agriculture (Fig 1 ) and residency [59].…”