Reassessment of Bournea Oliver (Gesneriaceae) based on molecular and palynological evidence.,PhytoKeys

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Reassessment of Bournea Oliver (Gesneriaceae) based on molecular and palynological evidence.
PhytoKeys ( IF 1.4 ) Pub Date : 2020-08-26 , DOI: 10.3897/phytokeys..55254
Wen-Hong Chen _{1,

2} , Ya-Mei Zhang _{1,

3} , Shi-Wei Guo _{1,

3} , Zhi-Rong Zhang ₄ , Li Chen _{1,

5} , Yu-Min Shui _{1,

2}

Affiliation

The former genus Bournea is endemic to China, including two species, has been under consideration for incorporation into the expanded genus Oreocharis s.l. in Gesneriaceae. The phylogenetic tree inferred from two DNA sequences (trnL-F and ITS) showed that this genus is deeply nested into Oreocharis s.l. However, the new tree from seven ones (atpB-rbcL, ndhH-rps15-ycf1, rpl132, trnC-trnD, trnL-F, trnT-trnL of chloroplast DNA and ITS regions) revealed that Bournea is the sister group of other of Oreocharis s.l. Furthermore, Bournea is morphologically different from other Oreocharis based on existing data. We suggest keeping Bournea as an independent genus in Gesneriaceae.

更新日期：2020-08-26

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