Complex sentence: The seeds are produced in fruits called Cypselae which are 2 mm long and have moderately short-strigose hairs, the fruits are topped with silky, hair like pappi 2--3 mm long.
Split into simpler sentences: The seeds are produced in fruits called "cypselae" which are 2 mm long and have moderately short-strigose hairs. The fruits are topped with silky hair-like pappi 2--3 mm long.