SUMI is popular feature Fukiran could have. When you hear ‘sumi’ on fukiran, that means you see either or both clear black line and many of white looking fine stripes (kenjousen) on plant. There is many of variety which produce this SUMI (sumingashi, kenkokuden, surusumi etc) but Beni-botan is popular because leaf stays short and they have wide fat leaves. Another popular variety is Kurohyou. (bean leaf with sumi).