Book is a surname. Notable people with the surname include:
- Anna Book (born 1970), Swedish singer
- Asher Book (born 1988), American dancer, singer-songwriter and actor
- Dan Book (born 1983), American songwriter and record producer
- Ed Book (born 1970), New Zealand basketball player
- Ian Book (born 1998), American football player
- Kim Book (born 1946), English footballer and manager
- Lauren Book (born 1984), American politician
- Nils-Ole Book (born 1986), German footballer
- Raymond Book (1925-2018), American politician
- Steve Book (born 1969), English footballer
- Todd Book (born 1968), American politician
- Tony Book (born 1934), English footballer and manager
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction