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 descending riff [of "What Is and What Should Never Be"] is amazing: It's like a bow is being drawn back, and then it releases. The rhythm of the vocals is almost like a rap. It's insane — one of their most psychedelic songs." This was also one of the first songs recorded by the band for which Robert Plant received writing credit. According to rock journalist Stephen Davis, the author of the Led Zeppelin biography "Hammer of the Gods: The Led Zeppelin Saga", the lyrics for this song reflect a romance Plant had with his wife's younger sister. "What Is