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Pseudoheterocaryum, a new genus segregated from Heterocaryum (Boraginaceae) on the basis of molecular data

2017; CSIRO Publishing; Volume: 30; Issue: 1 Linguagem: Inglês

10.1071/sb16022

1446-5701

Nasim Saadati, Maryam Khoshsokhan Mozaffar, Mahboubeh Sherafati, Shahrokh Kazempour Osaloo,

Plant and Fungal Species Descriptions

The phylogeny of Heterocaryum and Suchtelenia was examined using sequence data from the internal transcribed spacer region of the nuclear rDNA (ITS) and plastid trnL intron and trnL–trnF intergenic spacer (trnL–F) regions. Results indicated that Heterocaryum is non-monophyletic because of the inclusion of Suchtelenia calycina (C.A.Mey.) A.DC. Heterocaryum laevigatum (Kar. & Kir.) A.DC. formed a distinct branch sister to S. calycina and remaining Heterocaryum species. Hence, all species of Heterocaryum except H. laevigatum (type species of the genus) are transferred to a new genus, Pseudoheterocaryum. Taxonomic descriptions are presented for Pseudoheterocaryum and Heterocaryum, as well as a diagnostic key to the three genera included in the present study.