The following articles cover the timeline of United States inventions:
- Timeline of United States inventions (before 1890), before the turn of the century
- Timeline of United States inventions (1890–1945), before World War II
- Timeline of United States inventions (1946–1991), during the Cold War
- Timeline of United States inventions (after 1991), after the Fall of the Soviet Union
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