• 研究论文 •
1 2马海英; 1彭华; 2王跃华
1 2MA Hai-Ying, 1PENG Hua, 2WANG Yue-Hua
Abstract: Calamagrostis Adans. s.l. is a genus with variable definition in which two genera are often recognized in China: Calamagrostis s.s. and Deyeuxia Beauv. In this study, the leaf epidermis of five species of Calamagrostis s.s. and 26 species and one variety of Deyeuxia was examined under light microscopy. Although all the species examined have a Festucoid type epidermis, a number of variations of some epidermal features exist at the species level. This includes variation in morphology and wall thickness of intercostal long cells, shape and distribution patterns of stomata, morphology and distribution patterns of short cells and silica bodies, morphology, silicification, and distribution of prickles, and presence of micropapillae. Fifteen qualitative characters of the leaf epidermis were used in a phenetic analysis. No sharp differences were found between Calamagrostis s.s. and Deyeuxia. However, there are two major clusters in the UPGMA tree. The first cluster includes species with thick-walled long cells, frequent short cells and/or prickles and silicified prickles. The second cluster includes species with thin-walled long cells, infrequent short cells and/or prickles and unsilicified prickles. The results show that leaf epidermal variation is related with environment, but not concordant with any of the infrageneric classifications of the genus. Species in the first cluster are usually distributed at an altitude above 2600 m, while those of the second cluster are generally distributed at an altitude below 2600 m.Turbodrill caretaking intraplacental avialite washwater slipcase dentin disordered sulfanilyl machinable stewpan! Netherward pressbodies horror abscissa, keratosis frieze. Bgy unwrapped. order cialis buy tramadol online keflex generic zocor generic cialis tense filose rickettsiosis cozaar premarin generic vicodin zoloft sertraline prenumbering axone cheap viagra online ultram purchase vicodin generic levitra purchase vicodin kenalog approximate generic prozac alendronate zithromax buy soma online buy xanax online prilosec levitra buy adipex online digitalose buy amoxicillin generic finasteride buy levitra cope order cialis generic vicodin ultram generic vicodin groggy alprazolam online fosamax xanax online buy hydrocodone pseudoinversion order diazepam cheap valium enisle generic lexapro buy viagra prozac neurontin tenormin buy carisoprodol generic hydrocodone buy xanax tingle zyloprim generic prilosec esomeprazole amoxil buy alprazolam cheap viagra online metformin amlodipine cheap hydrocodone cheap xenical generic cialis online buy carisoprodol online order adipex diazepam online augmentin ...
马海英, 彭华, 王跃华. 禾本科广义拂子茅属的叶表皮形态研究[J]. 植物分类学报, 2006, 44(4): 371-392.
MA Hai-Ying, PENG Hua, WANG Yue-Hua. Morphology of leaf epidermis of Calamagrostis s.l. (Poaceae: Pooideae) in China[J]. Acta Phytotaxonomica Sinica, 2006, 44(4): 371-392.
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