@book {16243,
	title = {Memoirs of the College of Science,Kyoto Imperial University.Serier B.Biology},
	volume = {6},
	year = {1931},
	author = {Jisaburo Ohwi}
}
@article {16183,
	title = {Journal of the Washineton Academy of Sciences},
	year = {1931},
	author = {Walker}
}
@article {16137,
	title = {A Few New Species of Chinese Plants},
	journal = {Contributions from the Biological Laboratory of the Science Society of China (Botanical Series)},
	volume = {6},
	year = {1931},
	author = {S.S.Chien \& W.C.Cheng}
}
@article {16121,
	title = {A New Rehderodendron from Kweichow},
	journal = {Sinensia},
	volume = {2},
	year = {1931},
	author = {Hsen-Hsu Hu}
}
@book {16038,
	title = {Symbolae Sinicae},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {16028,
	title = {Botanical Notes on Fukien and Southeast China IV,V},
	journal = {Lingnan Science Journal},
	volume = {10},
	year = {1931},
	author = {Franklin P.Metcalf}
}
@article {16027,
	title = {Botanical Notes on Fukien and Southeast China,I,II,III},
	journal = {Lingnan Science Journal},
	volume = {10},
	year = {1931},
	author = {Franklin P.Metcalf}
}
@article {15933,
	title = {Dioscoreae Novae Asiaticae},
	journal = {Bulletin of Miscellaneous Information},
	year = {1931},
	author = {D.Prain \& I.H.Burkill}
}
@article {15927,
	title = {Einige neue Cruciferen},
	journal = {Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem},
	volume = {11},
	year = {1931},
	author = {O.E.Schulz}
}
@article {15909,
	title = {Enumeration of the Verbenaceous Plants Collected by R.C.Ching and Y.Tsiang},
	journal = {Sinensia},
	volume = {2},
	year = {1931},
	author = {Chien Pei}
}
@article {15903,
	title = {Fagacees Nouvelles De L{\textquoteright}Asie Orientale},
	journal = {Bulletin Du Museum National D{\textquoteright}Histoire Naturelle},
	volume = {3},
	year = {1931},
	author = {A.Camus}
}
@article {15893,
	title = {Four New Magnolieae from Kwangsi},
	journal = {The Journal of Botany},
	volume = {69},
	year = {1931},
	author = {J.E.Dandy}
}
@article {15889,
	title = {Further New Species and Varieties of Asiatic Rhododendrons},
	journal = {Notes from the Royal Botanic Garden,Edinburgh},
	year = {1931},
	author = {Harry F.Tagg,F.L.S.}
}
@article {15870,
	title = {Kleine Beitrage zur Kenntnis der Flora von China},
	journal = {Oesterreichische Botanische Zeitschrift},
	volume = {80},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {15868,
	title = {Lauraceae/Anthophyta},
	journal = {Symbolae Sinicae},
	volume = {7},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {15757,
	title = {New Species,Varieties and Combinations from the Herbarium and the Collections of the Arnold Arboretum},
	journal = {Journal of the Arnold Arboretum (Harvard University)},
	volume = {12},
	year = {1931},
	author = {Alfred Rehder}
}
@article {15712,
	title = {Notes on Ligneous Plants of Hopei},
	journal = {Bulletin of the Fan Memorial Institute of Biology (Botanical Series)},
	volume = {2},
	year = {1931},
	author = {T.Tang}
}
@article {15704,
	title = {Notes on some Labiatae from Szechuan},
	journal = {静生生物调查所汇报(植物)/Bulletin of the Fan Memorial Institute of Biology (Botanical Series)},
	volume = {2},
	year = {1931},
	author = {Hsen Hsu Hu \& Hse Tao Tsai}
}
@article {15677,
	title = {Notulae Systematicae ad Floram Sinensem,III},
	journal = {Journal of the Arnold Arboretum (Harvard University)},
	volume = {12},
	year = {1931},
	author = {H.H.Hu}
}
@article {15638,
	title = {Plantae Novae Chingianae},
	journal = {国立中央研究院自然历史博物馆丛刊/Sinensia,Contributions from the Metropolitan Museum of Natural History Academia Sinica},
	volume = {2},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {15636,
	title = {Plantae Novae Chingianae},
	journal = {国立中央研究院自然历史博物馆专刊/Sinensia,Contributions from the Metropolitan Museum of Natural History Academia Sinica},
	volume = {2},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {15605,
	title = {Plantae Tsiangianae:Corylaceae},
	journal = {国立中央研究院自然历史博物馆丛刊/Sinensia,Contributions from the Metropolitan Museum of Natural History Academia Sinica},
	volume = {2},
	year = {1931},
	author = {H.H.Hu}
}
@article {15411,
	title = {XIII.-New Asiatic Gentians:II.},
	journal = {Bulletin of Miscellaneous Information Royal Botanic Gardens,Kew},
	year = {1931},
	author = {C.V.B.Marquand}
}
@article {15313,
	title = {广西秦氏新种植物志(二)/Plantae Novae Chingianae,Pars II},
	journal = {国立中央研究院自然历史博物馆丛刊/Sinensia,Contributions from the Metropolitan Museum of Natural History Academia Sinica},
	volume = {2},
	year = {1931},
	author = {H.Handel-Mazzetti}
}
@article {14751,
	title = {中国兰科植物之研究一/Studies of the Chinese Orchids,I},
	journal = {Contributions from the Biological Laboratory of the Science Society of China},
	volume = {6},
	year = {1931},
	author = {Sung Shu Chien}
}
@article {14553,
	title = {中国植物之新种/A Few New Species of Chinese Plants},
	journal = {Contributions from the Biological Laboratory of the Science Society of China (Botanical Series)},
	volume = {6},
	year = {1931},
	author = {S.S.Chien \& W.C.Cheng}
}
@book {14351,
	title = {Beihefte zum Botanischen Centralblatt},
	volume = {48},
	year = {1931},
	author = {Heinrich von Handel-Mazzetti}
}
@article {4545,
	title = {The Studies of Chinese Ferns VI Genus Vittaria of China and Sikkime-Himalaya},
	journal = {Sinensia},
	volume = {1},
	year = {1931},
	author = {R. C. Ching}
}
@article {4448,
	title = {A New Spruce from Western China},
	journal = {Contributions from the Biological Laboratory of the Science Society of China : Botanical Series},
	volume = {6},
	year = {1931},
	author = {Wan-Chun Cheng}
}
@article {4438,
	title = {Filices Chinenses Novae Aut Minus Cognitae Praecipue in Herbario Regii Horti botanici Kewensis},
	journal = {Bulletin of the Fan Memorial Institute of Biology: Botany},
	volume = {2},
	year = {1931},
	author = {R. C. Ching}
}
@article {4437,
	title = {The Studies of Chinese Ferns-V},
	journal = {Bulletin of the Fan Memorial Institute of Biology: Botany},
	volume = {2},
	year = {1931},
	author = {R. C. Ching}
}
@article {2405,
	title = {The Studies of Chinese Ferns-V},
	journal = {Bulletin of the Fan Memorial Institute of Biology },
	volume = {203},
	year = {1931},
	author = {R. C. Ching}
}
@article {2179,
	title = {Asiatic Pteridophyta Collected by Joseph F. Rock},
	journal = {Contributions from the United States National Herb},
	volume = {26},
	year = {1931},
	author = {C. Chr.}
}
