Comparative Morphology of Schistidium lancifolium and its Relevant Species
-
摘要: 连轴藓属(Schistidium Brid.)的毛尖连轴藓(S. lancifolium)、圆蒴连轴藓(S. apocarpum)和粗疣连轴藓(S. strictum)在内蒙古贺兰山和黑龙江五大连池均有分布,它们的形态特征较为相似,极易混淆,因此对其分类鉴定较困难。本文利用光学显微镜并结合Blom的形态学和Ignatova的分子系统学分类观点,对采自两个地区的3种连轴藓属植物标本进行了分类研究,并对它们的形态特征进行了详细描述。其形态特征是:圆蒴连轴藓叶中肋背部无疣或上部具分散低疣、叶缘上部微具钝齿,毛尖平滑或具小齿;毛尖连轴藓叶中肋背面中部以上具高疣、叶缘中上部具强烈不规则的齿或锯齿,毛尖具强烈刺状齿;粗疣连轴藓除叶中肋背部具疣外,叶片细胞也具疣。根据以上特征可以区别并确认这3个种是各自独立的种。在此基础上,根据Blom的分类观点,并参照相关文献编制了中国连轴藓属11个种的分种检索表。本研究进一步确认了毛尖连轴藓在中国的地理分布,丰富了中国连轴藓属的研究资料。Abstract: Schistidium lancifolium is commonly confused with S. apocarpum and S. strictum because of the similarity in morphological characteristics and geographic distributions in the Henlan Mountains of Inner Mongolia and Wudalianchi in Heilongjiang. In this study, optical microscopy combined with related references (e.g.Blom's morphology and Ignatova's molecular phylogeny of taxonomy) were used to identify the collections from the two regions, and detailed comparisons of the morphological characters of three species are given below. These species were well delimited, and their morphological characteristics were: costa distantly smooth or with scattered low papillae near apex, upper leaf margins finely denticulate or smooth, hair-points finely spinulose-denticulate but often smooth in the upper part in S. apocarpum; costa strongly dorsally convex and distantly papillose in upper 1/2 of leaf length with papillae increasing in height towards the leaf apex, upper leaf margins strongly and irregularly dentate to serrate, hair-point sharply and strongly spinulose-denticulate in S. lancifolium; costa distant and lamina cells with papillae in S. strictum. Illustrations of the three species and a key to all Schistidium species in China are provided. Not only did this research confirm the existence and geographic distributions of S. lancifolium in China, but also enriched overall Schistidium data.
-
-
[1] 贾渝, 何思. 中国生物物种名录:第1卷(植物: 苔藓植物)[M]. 北京: 科学出版社, 2013: 45-46. [2] 黎兴江. 中国苔藓志:第3卷[M]. 北京: 科学出版社, 2000: 1-80. [3] Schimper WP. Synopsis Muscorum Europaeorum Praemissa Introductione de Elementis Bryologicis Tractante:Vol.1: Introductio: Accedunt tab 8 typos genericos exhibentes, Vol. 11: Specierum descriptio[M]. Editio secunda. Stuttgartiae: Schweizerbart (E. Koch), 1876.
[4] Brotherus VF. Musci[M]// Engler A ed. Die Naturlichen Pflanzenfamilien. 2nd ed. Berlin: Duncker ＆ Humblot, 1960, 10: 303-314.
[5] 陈邦杰. 中国藓类植物属志: 上册[M]. 北京: 科学出版社, 1963: 228-232. [6] 高谦. 东北藓类植物志[M]. 北京: 科学出版社, 1977: 112-126. [7] Nyholm E. Illustrated Moss Flora of Fennoscandia 11[J]. Musci Fasc CWK Gleerup, Lund, 1956, 2: 85-189.
[8] Deguchi H. A revision of the genera Grimmia, Schistidium and Coscinodon (Musci) of Japan[J]. J Sci Hiroshima Univ Ser B, Div 2, 1978, 16: 121-256.
[9] Bremer B. A taxonomic revision of Schistidhtm (Grimmiaceae, Bryophyta) 1[J]. Lindbergia, 1980, 6: 1-16.
[10] Bremer B. A taxonomic revision of Schistidium (Grimmiaceae, Bryophyta) 2[J］. Lindbergia, 1980, 6: 89-117. \
[11] Cao T, Vitt DH. A taxonomic revision and phylogenetic analysis of Grimmia and Schistidium (Bryopsida; Grimmiaceae) in China[J]. Hattori Botanical Laboratory, 1986, 61: 123-247.
[12] Gao C, Crosby MR. Moss Flora of China: Vol. 3[M]. St. Louis, Beijing: Missouri Botanical Garden Press, Science Press, 2003: 67-76.
[13] Blom HH, Shevock JR, Long DG, Ochyra R. Two new rheophytic species of Schistidium (Grimmiaceae) from China[J]. J Bryology, 2011, 33(3): 179-188.
[14] Feng C, Bai XL, Kou J, Li W. Schistidium ignatovae (Grimmiaceae), a new species from Sichuan, China[J]. Ann Bot Fennici, 2013, 50: 386-392.
[15] 毕庚辰, 白学良, 冯超, 寇瑾. 内蒙古乌兰坝-石棚沟自然保护区苔藓植物区系研究[D]. 呼和浩特: 内蒙古大学, 2013: 3-91. [16] 萨如拉, 白学良, 毕庚辰, 福英. 大兴安岭南部山地苔藓植物区系多样性研究[J]. 西北植物学报, 2013, 33(6): 1224-1233. [17] Smith AJE. The Moss Flora of Britain and Ireland[M]. Cambridge: Cambridge University Press, 2004: 399-427.
[18] Blom HH. A revision of the Schistidium apocarpum complex in Norway and Sweden[J]. Bryoph Bibl, 1996, 49: 55-333.
[19] McIntosh TT. Schistidium Bruch ＆ Schimper[M]// Flora of North America Editorial Committee. Flora of North America: Vol. 27[M]. New York: Oxford University Press, 2007: 207-225.
[20] Goryunov DV, Ignatova EA, Ignatov MS, Milyutina IA, Troitsky AV. Support from DNA data for narrow species concept in Schistidium (Grimmiaceae, Musci)[J]. J Brylo, 2007, 29(2): 98-103.
[21] Ignatova EA, Blom HH, Goryunov DV, Milyutina IA. On the genus Schistidium (Grimmiaceae, Musci) in Russia[J]. Arctoa, 2010, 19: 195-231.
[22] Matteri CM, Schiavone MM, Glaciares BA. New national and regional bryophyte records, 9[J]. J Bryol, 2004, 26(1): 63-66.
计量
- 文章访问数: 1107
- HTML全文浏览量: 0
- PDF下载量: 1465
下载:
