You friend might have seen this:

http://www.imdb.com/title/tt0249906/synopsis

It’s a version of “Rapunzel” that was on television in the early ’80s. There may be some basis in the origin of the word – “rapa” is part of the Latin name for turnip. But this is what Wikipedia says:

What is “Rapunzel”?

It is difficult to be certain which plant species the Brothers Grimm meant by the word Rapunzel, but the following, listed in their own dictionary,[13] are candidates.

1. Valerianella locusta, common names: Corn salad, mache, lamb’s lettuce, field salad. Rapunzel is called Feldsalat in Germany, Nuesslisalat in Switzerland and Vogerlsalat in Austria. In cultivated form it has a low growing rosette of succulent green rounded leaves when young, when they are picked whole, washed of grit and eaten with oil and vinegar. When it bolts to seed it shows clusters of small white flowers.[14] Etty’s seed catalogue[15] states Corn Salad (Verte de Cambrai) was in use by 1810.

2. Campanula rapunculus is known as Rapunzel-Glockenblume in German, and as Rampion[16] in Etty’s seed catalogue, and although classified under a different family, Campanulaceae, has a similar rosette when young, although with pointed leaves. Some English translations of Rapunzel used the word Rampion. Etty’s catalogue states that it was noted in 1633, an esteemed root in salads, and to be sown in April or May. Herb catalogue Sand Mountain Herbs[17] describes the root as extremely tasty, and the rosette leaves as edible, and that its blue bell-flowers[18] appear in June or July.”

3. Phyteuma spicata,[19] known as Ährige Teufelskralle in German.

Has anyone ever heard anything about this folk tale? I have Googled it and haven’t found anything on it.