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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0PI 341755'Commelin'Ulmus ×hollandica Mill. NetherlandsNC7SEED1969DONATED03/20/1969CultivarCrown narrow at first, later widening, branches ascending. Leaves small and dark. Twigs red brown. Growth rapid. Resistance good.1254937PI 341755
1PI 341756'Groeneveld'Ulmus ×hollandica Mill. NetherlandsNC7SEED1969DONATED03/20/1969CultivarCrown dense and narrow. Twigs gray. Growth slow. Resistance high.1254938PI 341756
2PI 341758'Vegeta'Ulmus ×hollandica Mill. NetherlandsNC71969DONATED03/20/1969CultivarCrown wide and branches ascending. Leaves large, flat and light. Growth rapid. Resistance moderate. Much used as parent.1254939PI 341758
3PI 313982Bea Schwarz O. P.Ulmus ×hollandica Mill. NetherlandsNC71966COLLECTEDCultivated materialReceived as Ulmus hollandica. Tree uniform, erect, branches many, ascending. Leaves 7.9 by 5.5 cm., many not glossy. Excellent winter hardiness and spring vigor. resistant to Dutch elm disease.1234468PI 313982
4PI 313984Bea Schwarz O. P.Ulmus ×hollandica Mill. NetherlandsNC71966COLLECTEDCultivated materialReceived as Ulmus hybrid. Tree erect, much branched, leafy, lenticels prominent, reddish-brown, leaves 8.5 by 6.9 cm. Excellent winter hardiness and spring vigor. Resistant to Dutch elm disease.1234470PI 313984
5PI 313550'Christine Buisman'Ulmus minor Mill. NetherlandsNC71966COLLECTEDCultivarTree uniform, very erect, medium leafy, much branched. Excellent winter hardiness and spring vigor.1234072PI 313550
6PI 313551'Belgica'Ulmus ×hollandica Mill. BelgiumNC7SEED1966COLLECTEDCultivarTree uniform, very erect. Branches many, alternating in 2 opposite rows. Excellent winter hardiness and spring vigor. Susceptible to Dutch elm disease.1234073PI 313551