James Mackay may refer to:
- James Mackay (British Army officer) (1718–1785), captain in the British Army during the French and Indian War
- James Mackay (New Zealand politician, born 1804) (1804–1875), New Zealand MP
- James Mackay (New Zealand politician, born 1831) (1831–1912), New Zealand farmer, explorer and member of the Auckland Provincial Council
- James Alexander Kenneth Mackay (1859–1935), Australian politician, writer and military leader
- James Mackay, 1st Earl of Inchcape (1852–1932), British colonial administrator
- James Mackay (cricketer) (1880–1953), Australian cricketer
- James Mackay (rugby union) (1905–1985), New Zealand rugby union player
- James MacKay (American politician) (1919–2004), US Representative from Georgia
- James Mackay, Baron Mackay of Clashfern (born 1927), Scottish lawyer and former Lord Chancellor
- James A. Mackay (1936–2007), Scottish historian and philatelist
- James Mackay (police officer), retired Deputy Chief Constable of Tayside police
- James Mackay (film producer) (born 1954), friend and collaborator of Derek Jarman
- James Mackay (actor) (born 1984), Australian actor
- James Townsend Mackay (1775–1862), Scottish botanist who lived in Ireland
- Jim "Bones" Mackay, golf caddy for Phil Mickelson
- Jimmy Mackay (1943–1998), Australian footballer
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