Regions of the chloroplast currently being sequenced for ferns in the Pryer Lab Fern rbcL - PCR amplification and DNA sequencing primers Fern atpB - PCR amplification and DNA sequencing primers Fern 18S - PCR amplification and DNA sequencing primers Fern rps4 - PCR amplification and DNA sequencing primers Fern trnGR - PCR amplification and DNA sequencing primers Fern ITS - PCR amplification and DNA sequencing primers