Anatomical Structures of Leaves and Taxonomic Values in Iris from the North of China Comparison on Leaf Phenotypic and Anatomical Structures of Polygonum paleaceum along Altitudinal Gradients at Yulong Mountains Comparative Studies on the Anatomical Structures of Leave of 3 Species in Saussurea Relationship between Anatomical Structures of Populus euphratica and Ecoenvironment Effect of drought on leaf anatomical characteristics of four Artemisia species in the Loess Plateau Anatomical structure and ecological adaptability of two kinds of halophytes(Haloxylon ammondendron Chenopodiaceae and Tamarix ramosissima Comparative Study on the Structure Characteristics of the Leaf,Stem,Root of Yunnan Wild Rice Species Leaf structure and its ecological adaptability in five species of Sonneratia Leaf anatomical structures and ecological adaptabilities to light of three alfalfa cultivars with different fall dormancies under shading during overwintering Drought Resistance Evaluation and Leaf Anatomical Structures of Four Species of Malus Plants in Western Sichuan Plateau The Physiological Response of Anatomical Structures and Physiological Indexes of Two Potentilla Species to Drought Stress