I suppose Joe's boss will also insist on driving on the right side of the road when in England... JeF Veldkamp Rijksherbarium / Hortus Botanicus POB 9514, NL-2300 RA Leiden, The Netherlands tel. + 31 (0) 71 527 35 49 --- fax. + 31 (0) 71 527 35 11 "All plants are hybrids, but some are greater bastards than others" [Geesink et al., Thonner's analytical key (1981)]