Page 143 - 《广西植物》2024年第10期
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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.