J Syst Evol ›› 1979, Vol. 17 ›› Issue (1): 15-23.
• Research Articles •
1. A classification is made on seven species of the genus Dysosma, of which four
are proposed as new combinations, and one as new species.
2. The pollens of six species in the genus Dysosma and two species of Podophyllum are examined. Morphologically, the Asiatic. P. emodi is radically distinct from the
North American P. peltatum and can be separated from Podophyllum as an independent genus-Sinopodophyllum.
3. The trend of evolution in Dysosma (fig. 2)and its relationships with the
genera Sinopodophyllum and podophyllum are discussed.
4. Based on the evidence from an analysis of the ecology and geographical
distribution of the component species (fig. 3), the problem of the centre of development of the genus Dysosma has been discussed.
Ying Tsün-Shen. On Dysosma Woodson and Sinopodophyllum Ying, gen. nov. of the Berberidaceae[J]. J Syst Evol, 1979, 17(1): 15-23.
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