VAN GENNEP uses, Or, on a terrace vert a tulip gules, slipped proper and crowned of the first; LOKE in Zealand has : Argent , on a terrace vert a tulip or, slipped and leaved proper.
1892, John Woodward, George Burnett, A Treatise on Heraldry, British and Foreign: With English and French Glossaries, page 337