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Pantropic present
Pantropic; c. 100 species (Holttum 1986).


Christensen's original study was confined to the species of tropical America. The first surveys of allied species in Asia were made independently by Ching (1938) and Ito (1939), both of whom failed to notice the significance of scale-structure and glands which separate Ctenitis (as here defined) from Tectaria and other genera. Copeland (1947) added other species which are here included in Tectaria. Holttum (1985) prepared a list of 47 Old World species included in Ctenitis by previous authors but not conforming to the present generic concept.


Ching 1938 – In: Bull. Fan Mem. Inst. Biol. p 375
C. Chr. 1986 – In: Gard. Bull. Sing. p 158
1920 – In: Kongel. Danske Vidensk. Selsk. Naturvid. Math. Afh. p 31
Holttum 1985: pp. 1-38. – In: Blumea
H. Ito 1939 – In: in Nakai & Honda, Nov. Fl. Jap. 4. p 205
Copl. 1947: Gen. Fil. p 123