1929–1950 1951–1975 1976–2000
Arthur Piantadosi , Les Fresholtz , Dick Alexander , and Jim Webb (1976)
Don MacDougall , Ray West , Bob Minkler , and Derek Ball (1977)
Richard Portman , William McCaughey , Aaron Rochin , and Darin Knight (1978)
Walter Murch , Mark Berger , Richard Beggs , and Nat Boxer (1979)
Bill Varney , Steve Maslow , Gregg Landaker , and Peter Sutton (1980)
Bill Varney , Steve Maslow , Gregg Landaker , and Roy Charman (1981)
Robert Knudson , Robert Glass , Don Digirolamo , and Gene Cantamessa (1982)
Mark Berger , Tom Scott , Randy Thom , and David MacMillan (1983)
Mark Berger , Tom Scott , Todd Boekelheide , and Chris Newman (1984)
Chris Jenkins , Gary Alexander , Larry Stensvold , and Peter Handford (1985)
John Wilkinson , Richard Rogers , Charles Grenzbach , and Simon Kaye (1986)
Bill Rowe and Ivan Sharrock (1987)
Les Fresholtz , Dick Alexander , Vern Poore , and Willie D. Burton (1988)
Donald O. Mitchell , Gregg Rudloff , Elliot Tyson , and Russell Williams II (1989)
Jeffrey Perkins , Bill W. Benton , Gregory H. Watkins , and Russell Williams II (1990)
Tom Johnson , Gary Rydstrom , Gary Summers , and Lee Orloff (1991)
Chris Jenkins , Doug Hemphill , Mark Smith , and Simon Kaye (1992)
Gary Summers , Gary Rydstrom , Shawn Murphy , and Ron Judkins (1993)
Gregg Landaker , Steve Maslow , Bob Beemer , and David MacMillan (1994)
Rick Dior , Steve Pederson , Scott Millan , and David MacMillan (1995)
Walter Murch , Mark Berger , David Parker , and Chris Newman (1996)
Gary Rydstrom , Tom Johnson , Gary Summers , and Mark Ulano (1997)
Gary Rydstrom , Gary Summers , Andy Nelson , and Ron Judkins (1998)
John T. Reitz , Gregg Rudloff , David E. Campbell , and David Lee (1999)
Bob Beemer , Scott Millan , and Ken Weston (2000)
2001–present
Michael Minkler , Chris Munro , and Myron Nettinga (2001)
David Lee , Michael Minkler , and Dominick Tavella (2002)
Christopher Boyes , Michael Hedges , Hammond Peek , and Michael Semanick (2003)
Scott Millan , Greg Orloff , Bob Beemer , and Steve Cantamessa (2004)
Christopher Boyes , Michael Semanick , Michael Hedges , and Hammond Peek (2005)
Bob Beemer , Willie D. Burton , and Michael Minkler (2006)
Kirk Francis , Scott Millan , and David Parker (2007)
Resul Pookutty , Richard Pryke , and Ian Tapp (2008)
Paul N. J. Ottosson and Ray Beckett (2009)
Lora Hirschberg , Gary Rizzo , and Ed Novick (2010)
Tom Fleischman and John Midgley (2011)
Andy Nelson , Mark Paterson , and Simon Hayes (2012)
Skip Lievsay , Niv Adiri , Christopher Benstead , and Chris Munro (2013)
Craig Mann , Ben Wilkins , and Thomas Curley (2014)
Chris Jenkins , Gregg Rudloff , and Ben Osmo (2015)
Kevin O'Connell , Andy Wright , Robert Mackenzie , and Peter Grace (2016)
Mark Weingarten , Gregg Landaker , and Gary Rizzo (2017)
Paul Massey , Tim Cavagin , and John Casali (2018)
Mark Taylor and Stuart Wilson (2019)
Jaime Baksht , Nicolas Becker , Phillip Bladh , Carlos Cortés Navarrete , and Michelle Couttolenc (2020)
Mac Ruth , Mark Mangini , Theo Green , Doug Hemphill , and Ron Bartlett (2021)
Mark Weingarten , James H. Mather , Al Nelson , Chris Burdon , and Mark Taylor (2022)
Tarn Willers and Johnnie Burn (2023)
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