Although taxonomists target the remote wild regions to discover new species, taxa lacking a comprehensive and modern systematic treatment may be the new hotspot for biodiversity discovery. The development of molecular systematics integrated with microscopic observation techniques has greatly improved the ability of taxonomists to identify species correctly. Vittaria centrochinensis Ching ex J.F. Cheng, regarded as a synonym of Haplopteris fudzinoi (Makino) E.H.Crane, remained hidden from the eyes of fern taxonomists for more than 20 years. Herein, we collected several population samples of V. centrochinensis by performing molecular phylogenetic analysis of five cpDNA regions (rbcL, atpA, matK, ndhF, and trnL-trnF) and through micromophological observation of specimens which differs from H. fudzinoi by lamina width and exospores. Considering the differences in morphology, geographical range, and genetic distance between these two species, we formally recognized V. centrochinensis as an authentic species and proposed a new combination Haplopteris centrochinensis (Ching ex J.F.Cheng) Y.H.Yan, Z.Y.Wei & X.C.Zhang, comb. nov. Our findings demonstrate that several taxa in synonyms are missing, and nowadays taxonomy should also include re-evaluation of the past taxonomy.

中文翻译：

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从 Haplopteris（凤尾蕨科）的同义词中寻找缺失的多样性


尽管分类学家以偏远野生地区为目标来发现新物种，但缺乏全面、现代系统处理的类群可能是生物多样性发现的新热点。分子系统学与显微观察技术相结合的发展极大地提高了分类学家正确识别物种的能力。 Vittaria centrochinensis Ching ex JF Cheng 被视为 Haplopteris fudzinoi (Makino) EHCrane 的异名，二十多年来一直隐藏在蕨类植物分类学家的视线之外。在此，我们通过对 5 个 cpDNA 区域（rbcL、atpA、matK、ndhF 和 trnL-trnF）进行分子系统发育分析，并通过对与 H.fudzinoi 在叶片宽度和叶片宽度方面不同的标本进行微观形态观察，收集了几个 V. centrochinensis 种群样本。外生孢子。考虑到这两个物种在形态、地理范围和遗传距离方面的差异，我们正式认定 V. centrochinensis 为真实种，并提出了一个新组合 Hapopteris centrochinensis (Ching ex JFCheng) YHYan、ZYWei 和 XCZhang、comb。十一月我们的研究结果表明，同义词中的几个分类单元缺失，现在的分类学还应该包括对过去分类学的重新评估。