J Syst Evol ›› 2016, Vol. 54 ›› Issue (3): 264-271.doi: 10.1111/jse.12193

• Research Articles • Previous Articles    

Fossil leaves of Populus from the Middle Miocene of Yunnan, SW China

Xiao-Qing Liang1,2, David K. Ferguson3, Tao Su1, and Zhe-Kun Zhou1,4*   

  1. 1Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China
    2School of Resource and Environmental Sciences, Yuxi Normal University, Yuxi 653100, Yunnan, China
    3Institute of Palaeontology, University of Vienna, A-1090 Vienna, Austria
    4Key Laboratory of Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
  • Received:2014-11-21 Online:2015-12-24 Published:2016-03-08

Abstract: Today southern Yunnan, SW China, has a tropical or subtropical climate and seasonal rainforests. In the past, some temperate elements were also present. In this paper, a new species of Populus is reported from the Middle Miocene deposits in Zhenyuan. Its leaves are ovate or ovate-suborbicular, with serrate margins. They have a shallowly cordate to cuneate base without glands, short acuminate apex, and salicoid teeth with spherical glands. The veins are glabrous but unicellular hair bases occur on the lower epidermis of the lamina. Stomata are confined to the lower epidermis. The presence of Populus in the Middle Miocene of the region indicates an expansion of the genus into low-latitude Asia in the late Cenozoic and a more complicated history of vegetational change in southern Yunnan than has so far been assumed.

Key words: Middle Miocene, palaeobotany, Populus, Salicaceae, southwest China

[1] Yu-Peng GUO, Qiu-Hong GUO, Juan WANG, Yan YAN, Gai-Ni WANG, Zhi-Qiang LU, Yu-Xia WU. Interspecific differentiation and gene flow between two desert poplars inferred from six vacuolar Na+/H+ exchanger loci . J Syst Evol, 2013, 51(6): 652-663.
[2] 1ZHANG Shou-Gong, 2CHEN Cheng-Bin, 1HAN Su-Ying, 2LI Xiu-Lan, 3REN Jian-Zhong, 3ZHOU Yu-Quan, 2SONG Wen-Qin, 2CHEN Rui-Yang, 1QI Li-Wang*. Chromosome numbers of some Populus taxa from China . J Syst Evol, 2005, 43(6): 539-544.
[3] Li Kuan-yu, Huang Min-ren, Wang Ming-xiu. Study on Origin of Populus tomentosa Carr. . J Syst Evol, 1997, 35(1): 24-31.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] BAI Xin-Fu ZHAO Jian-Ping JIANG Xiao-Man BI Ke-Hua. Growth Regularity and Effect of GA3 on the Flower Branch Elongation of Cut_flower Rose[J]. Chin Bull Bot, 2001, 18(01): 96 -99 .
[2] Kang Le. The Chemical Defenses of plants to phytophagous Insects[J]. Chin Bull Bot, 1995, 12(04): 22 -27 .
[3] Huang Jun;Jiang Yan-qiu and Xi Ti. Advances in the Study on Salt and Alkali Tolerance of the Forage in China[J]. Chin Bull Bot, 1990, 7(04): 24 -26 .
[4] Guo Ben-sen and Liu Sheng-gui. Studies on the Changes of Photosynthetics and Colchicine Content of Gloriosa superba[J]. Chin Bull Bot, 1995, 12(增刊): 46 -49 .
[5] Gong Ming;Ding Nian-cheng and Liu You-liang. Measurement of Water Potential and Its Component in Leaves with Dew Point and Psychrometric Methods[J]. Chin Bull Bot, 1989, 6(03): 182 -187 .
[6] Haiyan Li;Jiyuan Song;Jie Dong;Yaguang Zhan* . Establishment of Callus Regeneration System for Acer ginnala Maxim and Determination of Gallic Acid in Callus[J]. Chin Bull Bot, 2008, 25(02): 212 -219 .
[7] Jin Li Meifang Dong Fude Shang. Study on the Flower Bud Differentiation of Osmanthus fragrans ‘Dangui’ and O. fragrans ‘Ziyingui’[J]. Chin Bull Bot, 2007, 24(05): 620 -623 .
[8] Yanjie Wang;Jiaheng Shen. Megasporogenesis, Microsporogenesis and Development of Female and Male Gametophyte of Bupleurum chinense[J]. Chin Bull Bot, 2007, 24(03): 425 -432 .
[9] Shenmin Ji;Dabing Zhang. Molecular regulation of floral organ identity and quantity in rice[J]. Chin Bull Bot, 2007, 24(03): 284 -292 .
[10] Yuan Zhong, Fangyun Cheng, Lei Qin. Meristematic Nodule: a Valuable Developmental Pathway for Plant Regeneration[J]. Chin Bull Bot, 2011, 46(3): 350 -360 .