Ra. King et al., Molecular confirmation of Potamogeton x bottnicus (P. pectinatus x P. vaginatus, Potamogetonaceae) in Britain, BOTAN J LIN, 135(1), 2001, pp. 67-70
Restriction fragment length polymorphisms in the internal transcribed space
r region of ribosomal DNA and in the chloroplast genome combine to confirm
the existence of Potamogeton x bottnicus (P. pectinatus x P. vaginatus) in
Britain. One of the parents, P. vaginatus, is not currently a member of the
British nora, but did occur here in the past (the latest fossil fruits dat
e from 30 000 BP) and the hybrid may therefore owe its origin to ancient po
llination involving indigenous material or to more recent long-distance dis
persal. (C) 2001 The Linnean Society of London.