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Tahir Jalaluddin (8 December 1869, Ampek Angkek, Agam, West Sumatra – 26 October 1956) was a famous Muslim ulama in Southeast Asia.
He became the editor for Al-Imam publication which was published in Singapore between 1906 and 1908.
Tahir published two major treatises on astronomy: Natijatul'Umur (published 1357 H./ 1936 M.) and Kitab Jadual Pati Kiraan (published in 1362 H./ 1941 M.) - logarithms for determining the direction of kiblat and times for prayer.
His son Hamdan bin Sheikh Tahir was a Penang state governor (Yang di-Pertua Negeri) from 1989–2002.
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