@book {4542,
	title = {Research Bulletin of the Panjab University, Scienc},
	volume = {15},
	year = {1964},
	author = {Mehra \& Bir}
}
@book {4541,
	title = {Report of the First Scientific Expedition to Manch},
	volume = {4},
	year = {1935},
	author = {H.Christ}
}
@book {4467,
	title = {Flora Xizangica},
	volume = {1},
	year = {1983},
	author = {Ching and S. K. Wu}
}
@book {4466,
	title = {Flora Tsinlingensis},
	volume = {2},
	year = {1974},
	author = {Ching et Hsu}
}
@book {4462,
	title = {Flora Reipublicae Popularis Sinicae 3(2)},
	volume = {3},
	year = {1999},
	author = {Z. R. Wang}
}
@book {4456,
	title = {Flora Fujianica},
	volume = {1},
	year = {1982},
	author = {R. C. Ching}
}
@book {4392,
	title = {Bulletin de la Soci{\'e}t{\'e} Botanique de France},
	volume = {52},
	year = {1905},
	author = {H.Christ}
}
