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《Acta Botanica Boreali-Occidentalia Sinica》 2006-08
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Morphology and Anatomy of Two Athyriaceae Genera Growing in Shandong

ZHOU Feng-qin,GUO Qing-mei,TANG Shu-yu,LI Jian-xiu(Shandong University of Traditional Chinese Medicine,Jinan 250014,China)  
Light microscopy and scanning electron microscopy were adopted to systematically examine of the morphologies and anatomies of the roots rhizomes,stipe,rachis,leaf epidermis,trichomes,and sporangia of seven species of two Athyriaceae genera(Athyrium Roth.and Athyriopsis Ching).The results showed that the common features of the plants of the genera are that they have pithless steles in their roots,the U-or V-shaped vascular bundles in their stipe ich gradually combine into amphicribral vascular bundles upwards,the upper and lower epidermises with wavy anticlinal wall in the upper and lower epidermises of their leaves,and actinocytic,anomocytic and polocytic stomata in their leaves.The plants of the two genera differ in that Athyrium plants do not have trichomes and Athyriopsis plants have glandular hairs on their leaves and rachises;Athyrium plants have parenchyma in outer cortex of their roots and Athyriopsis plants have brown scelerenchyma.So these indicate athyriacea is a natural group and support that Athyriopsis is an independent genus.
【Fund】: 山东省自然科学基金项目(Y95C1335)
【CateGory Index】: Q944.5
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