3Tandon R, Shivanna K R, Ram H Y M. Reproductive biology of Butea monosperma (Fabaceae)[J]. Annals of Botany, 2003, 92:715
4Darwin C R. The different forms in flowers on plants of the same species [M]. London: John Murray, 1877
5Uphof J C T. Cleistogamic flowers[J]. Botanical Review, 1938, 4..21
6Culley T M, Grubb T C. Genetic effects of habitat fragmentation in Viola pubescens (Violaceae), a perennial herb with chasmogamous and cleistogamous flowers[J].Molecular Ecology, 2003, 12:2919
7Lloyd D G. Variation strategies of plants in heterogeneous environments [J ]. Biological Journal of Linnean Society, 1983, 21:357
8Schoen D J, Lloyd D G. The selection of cleistogamy and heteromorphic diaspores [J].Biological Journal of the Linnean Society, 1984, 23:303
9Schoen D J. Cleistogamy in Microlaena polynoda(Gramineae):an examination of some model predictions[J]. American Journal of Botany, 1984, 71:711
10Schemske D W. Evolution of reproductive characteristics in Impatiens (Balsaminaceae): the significance of cleistogamy and chasmogamy[J].Ecology, 1978,59 : 596
