李雄 李滿 吳望輝 覃永華 羅開文 王雙玲



摘 要:? 桂西南喀斯特地區(qū)是廣西也是中國生物多樣性保護優(yōu)先區(qū)域。基于該地區(qū)關鍵區(qū)域的深入調查,該文報道了廣西被子植物新記錄20種,即木姜葉征鎰木 [Wuodendron praecox (Hook. f. & Thomson) B. Xue, Y. H. Tan & X. L. Hou]、大果楠(Phoebe macrocarpa C. Y. Wu)、國楣鐵線蓮(Clematis fengii W. T. Wang)、方籽栝樓(Trichosanthes tetragonosperma C. Y. Cheng & Yueh)、櫪葉花楸(Sorbus yunnanensis L. T. Lu)、長苞樓梯草(Elatostema longibracteatum W. T. Wang)、富寧槭(Acer paihengii Fang)、云南山茱萸(Cornus eydeana Q. Y. Xiang & Y. M. Shui)、長梗杜鵑(Rhododendron longipedicellatum Lei Cai & Y. P. Ma)、粉花安息香(Styrax roseus Dunn)、滇南山礬(Symplocos hookeri C. B. Clarke)、歧筆菊(Dicercoclados triplinervis C. Jeffrey & Y. L. Chen)、海桐狀香草(Lysimachia pittosporoides C. Y. Wu)、麻栗坡紅絲線(Lycianthes marlipoensis C. Y. Wu & S. C. Huang)、百節(jié)賽爵床(Justicia multinodis Benoist)、西疇黃芩(Scutellaria sichourensis C. Y. Wu & H. W. Li)、折唇羊耳蒜(Liparis bistriata C. S. P. Parish & Rchb. f.)、細莖闊蕊蘭(Peristylus tenuicallus Ormerod)、滇南蘋蘭 [Pinalia yunnanensis (S. C. Chen & Z. H. Tsi) S. C. Chen & J. J. Wood]、全唇線柱蘭(Zeuxine integrilabella C. S. Leou),隸屬于17科20屬,其中征鎰木屬(Wuodendron B. Xue, Y. H. Tan & Chaowasku)和歧筆菊屬(Dicercoclados C. Jeffrey & Y. L. Chen)為廣西新記錄屬,同時提供了這些物種的形態(tài)描述、引證標本、地理分布和圖片。此外,基于收集的材料,就方籽栝樓、歧筆菊的部分關鍵分類學特征作了詳細的補充與修訂。最后,討論了新記錄屬種發(fā)現的生物地理學意義以及桂西南喀斯特地區(qū)的生物多樣性保護工作。
關鍵詞: 中越邊境, 新記錄, 石灰?guī)r植物區(qū)系, 補充描述
中圖分類號:? Q949
文獻標識碼:? A
文章編號:? 1000-3142(2023)03-0557-12
New records of angiosperms in Guangxi
LI Xiong1,2, LI Man1,2, WU Wanghui1,2*, QIN Yonghua1, LUO Kaiwen1, WANG Shuangling3
( 1. Guangxi Forestry Inventory and Planning Institute, Nanning 530011, China; 2. Guangxi Huasen Design Consulting Co., Ltd., Nanning
530011, China; 3. Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China )
Abstract:? The limestone region in Southwest Guangxi is defined as a priority area for biodiversity conservation and research not only at provincial but also at national level. Through in-depth investigation in the two nature reserves of this region, 20 angiosperm species from 20 genera and 17 families were found as new records for the flora of Guangxi, including Wuodendron praecox (Hook. f. & Thomson) B. Xue, Y. H. Tan & X. L. Hou, Phoebe macrocarpa C. Y. Wu, Clematis fengii W. T. Wang, Trichosanthes tetragonosperma C. Y. Cheng & Yueh, Sorbus yunnanensis L. T. Lu, Elatostema longibracteatum W. T. Wang, Acer paihengii Fang, Cornus eydeana Q. Y. Xiang & Y. M. Shui, Rhododendron longipedicellatum Lei Cai & Y. P. Ma, Styrax roseus Dunn, Symplocos hookeri C. B. Clarke, Dicercoclados triplinervis C. Jeffrey & Y. L. Chen, Lysimachia pittosporoides C. Y. Wu, Lycianthes marlipoensis C. Y. Wu & S. C. Huang, Justicia multinodis Benoist, Scutellaria sichourensis C. Y. Wu & H. W. Li, Liparis bistriata C. S. P. Parish & Rchb. f., Peristylus tenuicallus Ormerod, Pinalia yunnanensis (S. C. Chen & Z. H. Tsi) S. C. Chen & J. J. Wood and Zeuxine integrilabella C. S. Leou. Among them, Wuodendron B. Xue, Y. H. Tan & Chaowasku and Dicercoclados C. Jeffrey & Y. L. Chen were new recorded genera of Guangxi. All species were annotated by morphological and distribution description, voucher specimens and pictures. In addition, based on collected materials, several key taxonomic characteristics of Trichosanthes tetragonosperma C. Y. Cheng & Yueh and Dicercoclados triplinervis C. Jeffrey & Y. L. Chen were supplemented and revised respectively. Lastly, the biogeographic significance of these newly records as well as protection effectiveness of the reserves in limestone region of southwestern Guangxi were discussed.
Key words: Sino-Vietnamese border, new records, limestone flora, supplementary description
中國桂西南地區(qū)屬于世界生物多樣性熱點印度-緬甸區(qū)(Indo-Burma)的重要組成部分(Myers et al., 2000),總面積213萬hm2,涉及百色市那坡、德保、靖西3縣(市)以及崇左市天等、大新、扶綏、江州和龍州5縣(區(qū)),是中國乃至全世界最典型、最集中的喀斯特地貌分布區(qū)域之一。該區(qū)域地跨北熱帶和南亞熱帶,水熱條件好,地形地貌復雜,生境異質性強烈,是廣西植物多樣性最為豐富的地區(qū)之一,也是廣西植物三大特有中心之一,以石灰?guī)r地區(qū)特有現象最為顯著(Hou et al., 2010; 丁莉等,2010)。隨著調查研究……