长序苦参，豆科植物一新种

Sophora elongata, A New Species of Leguminosae

摘要:

该研究描述了福建省武夷山国家公园发现的豆科(Leguminosae)苦参属(Sophora)一新种：长序苦参(S. elongata S. P. Chen & W. J. Lin)，形态学比较表明，该种与苦参(S. flavescens)最相似，二者的区别为该种植株矮小，总状花序长40 cm，花萼2 mm×3 mm。基于3个核DNA片段组合(ETS、ITS、SQD1)和4个叶绿体DNA片段组合(matK、rbcL、rpl32-trnL、trnL-F)构建的系统发育树显示，长序苦参在系统发育树上位置独立，支持长序苦参为豆科植物一新种，但其系统发育位置不太稳定，存在核质冲突，推测是古老的杂交或不完全的谱系分选导致。

Abstract:

A new species of Sophora(Leguminosae), S. elongata S. P. Chen & W. J. Lin, was found in Wuyishan National Park, Fujian Province, which was most similar to S. flavescens in morphology. Their difference between the two species was that the plant was short, the raceme was 40 cm, and the calyx was 2 mm×3 mm. The phylogenetic tree constructed based on three nuclear DNA fragment combinations (ETS, ITS, SQD1) and four chloroplast DNA fragment combinations (matK, rbcL, rpl32-trnL, trnL-F) showed that S. elongata had an independent position on the phylogenetic tree, which supported that S. elongata was a new species of Leguminosae, but its phylogenetic position was independent and there was nuclear-cytoplasmic conflict, presumably due to ancient hybridization or incomplete phylogenetic sorting.