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	title = {Evolution of Leaf Form in Marsileaceous Ferns: Evidence for Heterochrony},
	journal = {Evolution},
	volume = {63},
	year = {2009},
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	chapter = {498-513},
	author = {K.M. Pryer and D.J. Hearn}
}
@article {484,
	title = {Relationships of lycopodium and lycopodiella based on combined plastid rbcL gene and trnL intron sequence data},
	journal = {Systematic Botany},
	volume = {25},
	year = {2009},
	pages = {496-510},
	type = {Review},
	chapter = {496},
	author = {Wikstrom, N. and Kenrick, P.}
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@article {483,
	title = {The gametophyte of Lycopodiella prostrata},
	journal = {American Fern Journal},
	volume = {97},
	year = {2009},
	pages = {230-233},
	type = {Review},
	chapter = {230},
	author = {Whittier, P. and Carter, R.}
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@article {250,
	title = {Global chloroplast phylogeny and biogeography of bracken (Pteridium; Dennstaedtiaceae)},
	journal = {American Journal of BotanyAmerican Journal of Botany},
	volume = {96},
	number = {5},
	year = {2009},
	pages = {1041-1049},
	isbn = {0002-9122},
	author = {Der, Joshua P and Thomson, John A and Stratford, Jeran K and Wolf, Paul G}
}
