| Name | WILLEM-1 |
| Accession number | PI-342613 |
| Pedigree | HALLETS-VICTORIA/WITTE-DIKKOP[39]; CHALLENGE/HALLETS-VICTORIA//SQUAREHEAD[39]; CHALENGE/SQUAREHEAD[5][233]; CHALLENGE-BASTAARD-VI/SQUAREHEAD[233]; WEBBS-VERBETERDE-VICTORIA/RODE-DIKKOP[233]; |
| Species | TR.AE |
| Bot. variety | albidum[233][542] |
| Habit | W |
| Locality | NLD |
| Gene | ne1,ne2[129]; |
| Synonym | WILLEM-I[221]; VILLEM-I[946][1322]; WILLIAM-1[39]; |
| Status | CV |
| Year | 1907 |
| Note | lutescenscompactoides[946] |