O'Kearney is a surname. Notable people with the surname include:
- Daniel O'Kearney (died 1778), Irish Catholic bishop
- Dara O'Kearney (born 1965), Irish ultra runner and poker player
- Jacobus Ó Cethernaig (died 1351), anglicised as James O'Kearney, Irish bishop
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