Mesophlebion crassifolium

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Mesophlebion crassifolium


Asia-Tropical: Jawa (Jawa absent); Lesser Sunda Is. absent
Malesia, except Java and Lesser Sunda Islands.


This species is variable as regards development of large sterile fronds and as regards length of stalks of lower pinnae. Some specimens appear to be intermediate between typical M. crassifolium and M. motleyanum or M. beccarianum; one from Malaya has spores with perispore intermediate between the winged type normal in this species and the papillose spores of M. beccarianum. Most specimens from Malaya and Borneo have rather large but thin indusia, but a few have quite small indusia; specimens from the Philippines (Luzon, Negros, Leyte) have all quite small indusia.


Copel. 1960: Fern Fl. Philip.: 325
v.A.v.R. 1908: Handb.: 182
C. Chr. 1929 – In: Gard. Bull. Str. Settl.: 385
Copel. 1951: p. 432. – In: Philip. J. Sci.: pl. 20
Backer & Posth. 1939: Varenfl. Java: 39
Holttum 1955 – In: Rev. Fl. Malaya: 246
Racib. 1898 – In: Fl. Btzg: 169
O. Ktze 1934 – In: Gard. Bull. Str. Settl.: 242