Ian Osterloh is a British clinical researcher for Pfizer, Inc. who led the development of sildenafil citrate (Viagra), as well as a number of Pfizer medications for cardiovascular disease.[1]
References[edit]
- ^ Roberts, William; Roberts, William Clifford (2000). Facts and Ideas from Anywhere. Wiley-Blackwell. p. 103. ISBN 978-0-87993-463-7. Retrieved 26 September 2010.
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