Rumex (Lapathum) Daiwoo (Sieb.) Makino nom. nov. Inner perianth 3, erect-patent, longer than the outer ones, glabrous, herbaceous; lobes broadly oblong, obtuse, membranaceous and more or less minutely erose on the margin, with anastomosing veins, 2½-3 mm. long, after anthesis gradually enlarged and tinged with rose-colour, in fruit deltoid-ovate to ovate-reniform, minutely denticulate on the margin, obtuse, subcrispate, reticulated-veined, 4–8 mm. wide, the midrib narrowly prominent below but not calliferous, or sometimes hardly and minutely unicalliferous.
Source: wiktionary