Jack O'Connell may refer to:
- Jack O'Connell (actor) (born 1990), English actor
- Jack O'Connell (Australian politician) (1903–1972), member of the Victorian Legislative Council
- Jack O'Connell (diplomat) (1921–2010), American diplomat and CIA Station chief in Amman, Jordan, 1963–1971
- Jack O'Connell (filmmaker) (1923–2019), American director of the 1968 film Revolution
- Jack O'Connell (English footballer) (born 1994), English footballer
- Jack O'Connell (Australian footballer) (1902–1975), Australian rules footballer
- Jack O'Connell (American politician) (born 1951), American politician
- Jack O'Connell (rugby union) (born 1990), Irish rugby union player
- Jack O'Connell (author) (1959–2024), American novelist
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