664 is an area code within Mexico's National Phone Numbering Schema (Plan Nacional de Numeracion). It covers the municipality of Tijuana, Baja California. It overlays area code 663.
Calls to numbers with the Mexican area code 664 must be dialed as any other international call, using the international call prefix, and the country code 52.
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