Characteristic of Molecular Evolution of Sibiraea angustata Based on nrDNA ITS and cpDNA trnL-F Sequence Analysis Phylogeny of Aceraceae Based on ITS and trnL-F Data Sets Molecular Phylogeny of the Lardizabalaceae Based on TrnL-F Sequences and Combined Chloroplast Data Genetic variations in trnL-F sequence and phylogenetic clustering of Lycoris species Phylogeny of Polygonum amphibium inferred from molecular sequences