STUDIES ON THE SPORE MORPHOLOGY OF ALEURITOPTERIS FEE IN BEIJING Farina Observation in Gametophytes of Aleuritopteris squamosa (Pteridaceae), with Comments on Its Phylogenetic Significance The identity of Aleuritopteris veitchii and A. duclouxii var. sulphurea in Sinopteridaceae Notes on Aleuritopteris Fee in China The Relationship between Aleuritopteris humatifolia and A-chrysophylla Based on Three Chloroplast DNA Sequences Analyses Studies on Gametophyte Development and Spore Propagation of Aleuritopte risargentea Research on quality standards of Aleuritopteris Herba Studies on Gametophyte Development and Spore Propagation of Aleuritopte risargentea Four Newly Recorded Plants from Ningxia,China (2)