There are at least 38 species from 17 unrelated genera that have ekop as all or part of one or more of their common names and I have no idea which of them are represented on this page.
web pics:
plank listed as ekop / Staudtia stipiata
planks
All of the pics below are veneer and none were listed as curly or mottled, so I assume that this figure is so prevalent in this species that it isn't normally mentioned. On the other hand, these are all from the same vendor, so maybe it's just that HE doesn't list that figure characteristic and other vendors would.
veneer sheets all from the same vendor
veneer sheet closeups with both levels of enlargement available --- these are from the same vendor as the set directly above