Catholicism primarily designates the faith, doctrine, practice and system of the Catholic Church. It may also refer to:
- Catholicity, the core set of beliefs of various Christian denominations
- Christian denominations and movements including:
- Anglo-Catholicism, a religious movement of the Anglican Communion
- Affirming Catholicism, a religious movement within the Anglican Communion
- Black Catholicism, the expression of the Catholic Church among African Americans
- Eastern Catholicism, Eastern rite particular churches of the Catholic Church, in full communion with the Pope in Rome
- Greek Catholicism, Eastern Catholic Churches that follow the Byzantine Rite (a.k.a. Greek Rite)
- Syriac Catholicism, Eastern Catholic Churches that follow the Syriac Rite
- Folk Catholicism, a religious and social movement within the Catholic Church
- Independent Catholicism, an independent sacramental movement originally from the Catholic Church
- Old Catholicism, Western churches which separated from the see of Rome after the First Vatican council of 1869–70
- Liberal Catholicism, the liberal branch within the Catholic Church
- National Catholicism, a nationalist branch within the Catholic Church in Francoist Spain
- Political Catholicism, the political and social doctrines of the Catholic Church
- Traditionalist Catholicism, a conservative religious movement within Catholicism
- Western Catholicism or Latin Catholicism
- Anglo-Catholicism, a religious movement of the Anglican Communion
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