J Syst Evol ›› 1997, Vol. 35 ›› Issue (5): 452-456.

• Research Articles • Previous Articles     Next Articles

Morphological Characters of Fruits in Damasonium (Alismataceae) and Its Taxonomic Significance

Wang Qing-feng, Zhang Zhi-yun, Chen Jia-kuan   

  • Online:1997-09-10 Published:1997-09-10

Abstract: Macromorphological and micromorphological characters of fruits in the genus Damasonium (Alismataceae), comprising five species, were examined by stereoscope and scanning electron microscope(SEM). We found that the fruits of this genus are usually follicles with 2~6 seeds, rarely achenes with a single seed, compressed, irregularly rectangular with long-beaks at apex, or triangulate with indistinct beaks, carpodermis covered by cuticlewhich is again covered densely with fragmentary or granulate waxy appendage. These characters, in authors’ opinions, are of some taxonomic significance in this genus. Combined with the other characters of this genus, we consider that the treatment of D. alisma and D. stellatum as two separate species is reasonable; D. californicum is still a member in the genus Damasonium, and D. polyspermum with some special characters is different from D. alisma. A key to the species of Damasonium is given in this paper. Stomata on the carpodermis in Damasonium, which are unique in the Alismataceae, are first reported.

Key words: Damasonium, Fruit, Macromorphology, Micromorphology, Taxonomic significance

[1] Stefanie M. Ickert-Bond, AJ Harris, Sue Lutz, Jun Wen. A detailed study of leaf micromorphology and anatomy of New World Vitis L. subgenus Vitis within a phylogenetic and ecological framework reveals evolutionary convergence . J Syst Evol, 2018, 56(4): 309-330.
[2] Hong-Hu Meng, Tao Su, Yong-Jiang Huang, Hai Zhu, Zhe-Kun Zhou. Late Miocene Palaeocarya (Engelhardieae: Juglandaceae) from Southwest China and its biogeographic implications . J Syst Evol, 2015, 53(6): 499-511.
[3] Yong‐Jiang HUANG,Yu‐Sheng(Christopher) LIU, Michael ZAVADA. New fossil fruits of Carya (Juglandaceae) from the latest Miocene to earliest Pliocene in Tennessee, eastern United States . J Syst Evol, 2014, 52(4): 508-520.
[4] De-Li PENG, Xiao-Kun OU, Bo XU, Zhi-Qiang ZHANG, Yang NIU, Zhi-Min LI, Hang SUN. Plant sexual systems correlated with morphological traits: Reflecting reproductive strategies of alpine plants . J Syst Evol, 2014, 52(3): 368-377.
[5] Yan-Nan LI, Lei XIE, Jin-Yu LI, Zhi-Xiang ZHANG. Phylogeny of Euonymus inferred from molecular and morphological data . J Syst Evol, 2014, 52(2): 149-160.
[6] Bo LIU, Hai-Ning QIN. Taxonomic revision of the Symplocos nakaharae complex (Symplocaceae) with special reference to fruit morphology . J Syst Evol, 2013, 51(1): 94-114.
[7] Abiodun Emmanuel AYODELE Zhe-Kun ZHOU*. Scanning electron microscopy of fruits in the West African Polygonaceae . J Syst Evol, 2010, 48(5): 336-343.
[8] Rang-Jin XIE, Zhi-Qin ZHOU, Lie DENG. Taxonomic and phylogenetic relationships among the genera of the True Citrus Fruit Trees Group (Aurantioideae, Rutaceae) based on AFLP markers . J Syst Evol, 2008, 46(5): 682-691.
[9] . Tracking character evolution and biogeographic history through time in Cornaceae - Does choice of methods matter? . J Syst Evol, 2008, 46(3): 349-374.
[10] Jin-Bo SHEN;,Hong-Fei LU,;,Qiu-Fa PENG;,Ju-Fang ZHENG;,Yu-Mei TIAN. FTIR spectra of Camellia sect. Oleifera, sect. Paracamellia, and sect. Camellia (Theaceae) with reference to their taxonomic significance . J Syst Evol, 2008, 46(2): 194-204.
[11] Wen-Zhe LIU,;,Hua-Qin KANG;,Hong-Chun ZHENG;,Yi-Zhong FENG. An investigation on the sexual reproductive cycle in Tapiscia sinensis . J Syst Evol, 2008, 46(2): 175-182.
[12] Wei SUN, Zhong-Ze ZHOU, Ming-Zhen LIU, He-Wen WAN, Xiang DONG. Reappraisal of the generic status of Pteroxygonum (Polygonaceae) on the basis of morphology, anatomy and nrDNA ITS sequence analysi . J Syst Evol, 2008, 46(1): 53-59.
[13] HOU Yuan-Tong, XU Chong-Mei, QU Chang-You, BA Xiao-Ge, LU Fa-Jun, LI Fa-Zeng. A study on fruit morphology of Polygonum sect. Polygonum (Polygonaceae) from China . J Syst Evol, 2007, 45(4): 523-537.
[14] CHEN Shi-Chao, SEINE Nyoe Nyoe Ko, FU Cheng-Xin. Seed coat morphology of Smilacaceae and its systematic significance . J Syst Evol, 2007, 45(1): 52-68.
[15] WANG Yu-Guo, LI Guang-Zhao, ZHANG Wen-Ju, YOU Jia, CHEN Jia-Kuan. A systematic study of the genus Rhododendron (Ericaceae) using micromorphological characters of fruit surface and seed coat . J Syst Evol, 2007, 45(1): 21-38.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!