Parents are N. asturiensis and N. poeticus. Sometimes spelled as Mustard Seed.
'Mustard Seed'
Mustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #52017 Kirby Fong, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #52016 Kirby Fong, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #41286 Kirby Fong, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #41285 Kirby Fong, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #16643 Becky Fox Matthews, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #16642 Becky Fox Matthews, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #16641 Becky Fox Matthews, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #9227 Kirby Fong, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #3429 Mary Lou Gripshover, USAMustardseed, 2 Y-Y, Alec Gray, England, 1937
Photo #1067 Quentin Erlandson, USA