Page 143 - 《广西植物》2024年第10期
P. 143

10 期                          陆豫等: 越南石松类与蕨类植物三种新记录                                        1 9 4 5

            oppositeꎬ rarely alternateꎻ Pinnule obdeltoidꎬ coriaceousꎬ  Fansipan Mountainꎬ ca. 1 700 mꎬ epiphyte in evergreen
            margin entireꎬ upper margin with 2 - 4 shallow sinusꎻ  seasonal tropical broad ̄leavedꎬ Chen Qiuyunꎬ 12
            stalk 0.5-1.0 mmꎬ persistent after pinna fallꎻ veins 7-10ꎬ  Nov. 2023ꎬ Chen 20231112003 (GXFI).
            flabellate at baseꎬ each again 2-4 forkedꎬ visible on both  Distribution: Type specimens were collected from
            surfaces. Sori 2-4 per pinnaꎬ reniform.            Yunnanꎬ China. It is distributed in Sichuanꎬ Guizhouꎬ
                 Specimens examined: Lang Son Prov.ꎬ Trang     Yunnanꎬ Xizang and other places in China. The species
            Dinhꎬ That Khe caveꎬ ca. 260 mꎬ grows in the crevices  is also found in India and Nepal. It grows on rocksꎬ
            of rock wallsꎬ Chen Qiuyunꎬ 4 Nov. 2023ꎬ Chen      crevices or trunks. Newly recorded species for Vietnam.
            20231114001 ( GXFI )ꎻ Phan Ke Locꎬ 2009ꎬ 6046          Notes: The most obvious characteristics of the
            (01870366)(PE).                                    species are the scales on the rhizomes obviously
                 Distribution: Type specimens were collected and  dichroicꎬ that isꎬ the middle is nearly black and the
            distributed in Guangxiꎬ China. It grows in rock    edge is light brownꎬ which are closely attached to the
            crevices. Newly recorded species for Vietnam.      rhizomes and easy to fall offꎬ and its leaves herbaceous
                 Notes: This species is similar to Adiantum    and lanceolate.
            juxtapositumꎬ and was initially identified as A.       Adiantum longzhouensis was found in limestone
            juxtapositumꎬ such as Phan Ke Locꎬ 2009ꎬ 6046      areas of Guangxi along the China ̄Vietnam border.
            ( 01870366 ) ( PE ) had been identified as A.      Phlegmariurus  guangdongensis  was  distributed  in
            juxtapositum and recorded in the book ( Wei et al.ꎬ  evergreen broad ̄leaved forests in Guangdongꎬ Hainanꎬ
            2022 )ꎬ but   it  should  be  misidentified  as  A.  and Guangxi. Lepisorus bicolor was found in high ̄
            longzhouensis. A. longzhouensis was formally published  altitude areas of Yunnan and Sichuanꎬ etc. These
            in 2017 and differs from A. juxtapositum in that it grows  species were found in Vietnamꎬ indicating the similarity
            in limestone areasꎬ pinna without white powder on  of plant diversity between China and Vietnam. This
            abaxial surfaceꎬ sori reniform.                    contributes to a better understanding and deepening of
                 Lepisorus bicolor Ching in Bull. Fan Mem.     biodiversityꎬ helps assess the biodiversity status of a
            Inst. Biol. 4 ( 3 ): 66. 1933ꎻ Lin Youxing in Fl.  regionꎬ  enhances  our  understanding  of  species
            Reipubl. Popularis Sin. 6(3): 35. 2004ꎻ Qi Xinping et  distributionꎬ evolutionary relationshipsꎬ and their roles
            Zhang Xianchun in Flora of China Vol. 2 - 3: 22.   within ecosystems. It also promotes exchanges and
            2013. ——— Polypodium excavatum Bory ex Willd. var.  cooperation between the two countries in the field of
            bicolor Takeda in Notes Roy. Bot. Gard. Edinburgh 8  biodiversity conservation.
            (39): 280. 1915. 二色瓦韦(Fig. 1: G-I)
                 Type: China. HenryA13070 (Holotypeꎬ E!).
                                                               References:
                 Plants 20-40 cm tall. Rhizomes creepingꎬ strongꎬ
            densely attached to scales that fall off easily. Scales
                                                               CHEN CWꎬ EBIHARA Aꎬ CHENG KYꎬ et al.ꎬ 2021. Studies
            closely appressedꎬ bicoloredꎬ nearly black with much  of Vietnamese pteridophyte flora 1 [J]. Syst Botꎬ 46(3):
            paler brown marginsꎬ broadly ovate ̄lanceolateꎬ apex  573-581.
                                                               CHEN CWꎬ HSU TCꎬ CHAO YSꎬ et al.ꎬ 2020. A newly
            acuminate. Lamina lanceolateꎬ widest 1/ 3 - 1/ 2 from
                                                                 recorded genus and twelve newly recorded species of ferns for
            baseꎬ both ends attenuateꎬ herbaceous or thinly      Vietnam from Lang Biang Plateau [J]. Phytotaxaꎬ 443(2):
                                                                 121-143.
            papery. Sori usually along distal half of laminaꎬ or near
                                                               CHEN CWꎬ HSU TCꎬ DOAN HSꎬ et al.ꎬ 2023. Studies of
            end of laminaꎬ closer to costaꎬ elliptic or suborbicularꎻ
                                                                 Vietnamese pteridophyte flora 2 [ J]. Syst Botꎬ 48 ( 2):
            paraphyses blackꎬ suborbicularꎬ membranousꎬ margins  159-172.
            eroseꎻ central lamina large and transparentꎬ with  NONG VDꎬ TRAN TVꎬ HOANG NNꎬ et al.ꎬ 2016. A new
                                                                 combination and a new species in Phlegmariurus (Herter)
            marginal lamina irregularꎬ cell walls brownꎬ thickened.
                                                                 Holub ( Lycopodiaceae ) from Southern Vietnam [ J ].
                 Specimens examined: Lao Cai Prov.ꎬ Sa Paꎬ       Adansoniaꎬ 38: 151-157.
   138   139   140   141   142   143   144   145   146   147   148