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current | 16:20, 14 February 2006 | 2,128 × 2,136 (1.15 MB) | Laurascudder | The Dunhuang star map of 940 AD. Ursa major, sagittarius and capricornus are recognizable. The three colors (white, black and yellow) indicate the schools of astronomy of Shih Shen, Kan Te, and Wu Hsi |
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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