Asplenium ritoense Hayata (Aspleniaceae), new to Hainan Island Ultrastructural Observations on the Formation of Spore Ornamentation in Asplenium sarelii Sequencing and Analysis of the Transcriptome of Asplenium nidus Relationship of Asplenium yunnanense and A. lushanense inferred from the sequence analysis of chloroplast   rbcL, trnL-F and rps4-trnS A subspecific taxonomic study on Asplenium trichomanes L. from China Systematic Position and Polyploid Origin of the Fern Asplenium kiangsuense (Aspleniaceae) Sporophytic morphology characteristics comparison and water physiological indexes measurement of two pteridophytes in Asplenium Soral Crypsis: Protective Mimicry of a Coccid on an Indian Fern Comparative Research of Gametophyte Development of Four Species in Asplenium Sequencing and Analysis of the Transcriptome of Asplenium nidus