Apomixis may be widespread among trees of the climax rain forest - KAUR, A.; HA, C. O.; JONG, K.; SANDS, V. E.; CHAN, H. T.; SOEPADMO, E.; ASHTON, P. S. (Nature Publishing Group, 1978)
http://dx.doi.org/10.1038/271440a0
Keywords: W; V; WW-YZ; TA-TD; U