Syringa have a strong fragrance. Flowering varies between mid spring to early summer, depending on the species. The fruit is a dry, brown capsule, splitting in two at maturity to release the two winged seeds. The genus "Syringa" was first formally described in 1753 by Carl Linnaeus and the description was published in "Species Plantarum". The genus name "Syringa" is derived from Ancient Greek word "syrinx" meaning "pipe" or "tube" and refers to the hollow branches of "S. vulgaris". The English common name "lilac" is from the French "lilac" via the Arabic ليلك ("lilak") from Persian نیلک ("nilak") meaning "bluish". Lilacs
What Is and What Should Never Be and What Should Never Be" was performed live at Led Zeppelin concerts between 1969 and 1973. A live version taken from a performance at the Royal Albert Hall in 1970 can be seen on the "Led Zeppelin DVD". Another was included on disc two of the live triple album "How The West Was Won". Two more versions were included in BBC Sessions. What Is and What Should Never Be "What Is and What Should Never Be" is a song by English rock band Led Zeppelin. It was written by Jimmy Page and Robert Plant and was included as the second