About Trifolium resupinatum L.
Trifolium resupinatum L., also commonly called reversed clover, Persian clover, or shaftal, has taxonomic synonyms including Trifolium resupinatum L. var. majus Boss. and Trifolium suaveolens Willd. It is an annual clover species grown for use as fodder and hay. When cultivated, it grows up to 60 cm (24 inches) tall; it forms rosettes instead when it is grazed or mowed. This species is native to central and southern Europe, the Mediterranean, and southwest Asia, ranging as far south as the Punjab. It is an important hay crop in cold regions of Iran, Afghanistan, and other Asian areas that have cold winters.