%0 Journal Article %A HUANG Ping;SHEN Jun-Hui;GU Dong-Ya;LÜMing-Jin;YE Yong-Zhong* %T Anatomical Structures of Vegetative Organs and Ecological Adaptation of Gaura parviflora %D 2009 %R 10.7525/j.issn.1673-5102.2009.04.003 %J Bulletin of Botanical Research %P 397-401 %V 29 %N 4 %X Gaura parviflora is one of the invasive plants, the anatomical structure of its vegetative organs was studied by the methods of paraffin section. The results showed that: In the secondary structure of the roots of G. parviflora,there was a larger proportion of secondary xylem, about two thirds of the entire cross section, the number of vessels averaged 138.25, and the lumen diameter was 85.37 μm; The cork of the roots and stems were both developed, which was composed of 6 to 7 layers of flat cells; there were many parachyma cells containing needle crystals in the secondary phloem; The leaves of G.parviflora had the typical characteristics of xerophytes leaves: the multiple epidermis; the stomata existed in both upper and lower epidermis,whose densities were 180 mm-2 and 266 mm-2, respectively; the palisade tissue was two-side palisade which included 2 to 3 layers of cylindrical cells in the upper side, with a lot of chloroplasts; the main vein of leaves had well developed xylem ,with a number of radial arranged vessels. The characters mentioned above showed that G.parviflora adapted well to the dry environment. %U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2009.04.003