University. February 2007 [2014-05-26]. (原始内容存档 (PDF)于2016-03-04). It escaped cultivation and has since invaded a variety of sites, including low-elevation
PMID 13054692. doi:10.1038/171737a0. (原始内容存档 (PDF)于2014-08-23). It has not escaped our notice that the specific pairing we have postulated immediately suggests