Circumscription of Apiaceae tribe Oenantheae

Evaluation of the taxonomic status of water dropwort (Oenanthe, Apiaceae) accessions from East Asia based on nuclear rDNA internal transcribed spacer sequences

“…In this study, we compared the nrDNA ITS region sequence variation of 170 Oenanthe accessions collected from a wide geographical region of China and its neighboring countries with accessions reported in previous studies (Hardway et al, 2004;Kadereit and Kadereit, 2005;Downie et al, 2008;Zhou et al, 2008;Spalik et al, 2014). Using two phylogenetic tree construction methods (BI and ML) and two kinds of dataset (with and without indels), we found that the accessions collected in this study tended to cluster into two groups.…”

Reconsideration of the Taxonomic Status of Mason's Lilaeopsis – A State-Protected Rare Species in California

“…However, recent research based on molecular evidence from nuclear and chloroplast genes suggests that the genus is best placed in the Oenantheae tribe within the Apioideae (Downie et al 2008) and that Lilaeopsis is sister to the clade comprising Ptilimnium, Limnosciadium, Daucosma, Cynosciadium and rachis-leaved species of Oxypolis, not the Mexi-can genus Neogoezia as suggested by Petersen et al (2002). The New World endemics clade of tribe Oenantheae is native to North America and comprises a monophyletic group that appears to be evolving much faster than any other major clade recognized in the tribe (Hardway et al 2004).…”

“…We chose the ITS region in large part because Hardway et al (2004) found evidence for particularly rapid evolution in the Oenanthe clade that includes Lilaeopsis when compared to the rest of the taxa. Sequence divergences in this clade averaged 6-7 times higher (approx.…”

“…2.8%) or Cicuta (approx. 2.4%) (Hardway et al 2004). AFLP analysis was selected as a secondary marker system based on the increasing popularity of this form of DNA fingerprinting as a complementary system in phylogenetic studies (Holland et al 2008).…”

A new combination in Helosciadium (Apiaceae) for the flora of North Africa

“…According to recent molecular studies (Hardway et al 2004, Spalik & Downie 2006, Spalik et al 2009), the genus Helosciadium Koch (1824: 125) was segregated from Apium Linnaeus (1753: 264). The separate position of Helosciadium is supported also by morphological characters and fruit anatomy (Ronse et al 2010).…”