Page 21 - 《广西植物》2022年第10期
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10 期                 张梦华等: 越南莲座状复苏卷柏一新种———越南卷柏(卷柏科)                                       1 6 3 9






































    The rectangle represents the type location of S. pseudotamariscina.
                Fig. 4  Distribution of Selaginella pseudotamariscina X. C. Zhang & C. W. Chenꎬ sp. nov.


       Distribution and habitat: Selaginella pseudota ̄  There exist a few specimens of S. pseudotamariscina de ̄
   mariscina is only known in Khanh Hoa and Ninh Thuan  posited in various herbaria and one of the oldest speci ̄
   provinces of southern central Vietnam (Fig. 4)ꎬ growing  mens was collected a century ago by the French
   on granite rocks in open coastal forests.         collector E. Poilane in Nhatrangꎬ which is preserved in
       Etymology: The specific epithet ‘ pseudotamari ̄  herbarium P with a duplicate in the U.S. This rosette ̄

   scina’ refers to its close relation and morphological  forming species appears to have adapted to the coastal
   similarity with S. tamariscina.                   climate  on  granite  rocks  in  Southern  central
       Conservation status (EN): Selaginella pseudotam ̄  Vietnam. Here it is tentatively listed as an endangered

   ariscina is distributed only in two provinces in southern  (EN) species according to IUCN categories and criteria
   central Vietnam (Khanh Hoa and Ninh Thuan).       (IUCNꎬ 2018).

                Key to Selaginella pseudotamariscinaꎬ S. tamariscina and S. pulvinata

   1. Strobilus dorsoventrally complanateꎻ ventral sporophylls fertileꎬ dorsal sporophylls sterileꎻ dorsal leaves symmetri ̄
     calꎬ lanceateꎬ sulcate on the upper surfaceꎻ ventral leaves shallowly sulcate on the upper surface 
             S. pseudotamariscina X. C. Zhang & C. W. Chen
   1. Strobilus tetragonalꎻ ventral and dorsal sporophylls both fertileꎻ dorsal leaves asymmetricalꎬ obliquely ovateꎬ trian ̄
     gularꎬ or ellipticꎬ upper surface without sulcateꎻ ventral leaves upper surface without sulcate    2
     2. Stems and roots entangled not forming treelike trunkꎻ inner margins of dorsal leaves lacerate or entireꎬ outer
       margin revolute and entire    S. pulvinata (Hook. & Grev.) Maxim.
     2. Stems and roots entangled often forming treelike trunkꎻ inner margins of dorsal leaves denticulateꎬ outer margin
       denticulate or shortly ciliolate    S. tamariscina (P. Beauv.) Spring
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