@book {4020,
	title = {Flora of Okinawa and the southern Ryukyu Islands},
	year = {1976},
	month = {1976///},
	publisher = {Smithonian Institution Press},
	organization = {Smithonian Institution Press},
	address = {Washington, D.C.},
	author = {Walker, E. H.}
}
@article {3588,
	title = {Two new species of Burmanniaceae from Japan},
	journal = {Journal of Geobotany},
	volume = {24},
	year = {1976},
	month = {1976///},
	pages = {2 - 10},
	author = {Hatusima, S.}
}
@article {3286,
	title = {Gametophytes and young sporophytes of Ophioglossum crotalophoroides Walt.},
	journal = {Amer. J. Bot.},
	volume = {63},
	year = {1976},
	month = {1976///},
	pages = {443 - 448},
	author = {Mesler, M. R.}
}
