Just like cincfoille and quintefoille the word derives from Latin quinquefolium (with quinquefoille and quintefoille preserving a Latinate form of the ordinal and cardinal numerals) and basically has the same meaning. FEW, OED and DMLBS treat these as the same word (with the FEW merely acknowledging a ‘von quintus beeinflussten form’), but the forms are sufficiently different to warrant separate articles in the AND).