Abstract.
The styles of four species within Astragalus subgenus Pogonophace (Leguminosae) were investigated under the scanning electron microscope (SEM): A. hoantchy Franch., A. complanatus Bunge, A. flavovirens K. T. Fu and A. dolichochaete Diels. The first species has a penicillate stigma, while the others possess a pollen brush. The two types of styles are not homologous. The results support the exclusion of sect. Sesbanella from subg. Pogonophace and the treatment of the other three sections of the subgenus as a distinct genus (Phyllolobium) in subtribe Coluteinae (tribe Galegeae), which is consistent with previous morphological and molecular studies.
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We are grateful to an anonymous reviewer for valuable comments on the manuscript and for language corrections. We would like to thank the keepers of the following herbarium for lending specimens: CDBI, E, K, KUN, PE, SZ, and WUK. We would also like to thank Su Yun and Zhu Shi-xin for assistance in the field. We are deeply indebted to Xiao Yin-hou and Yang Xue-jian for their technical assistance and to Chen Zhi-duan for valuable comments on an earlier version of this manuscript. Craig Brough is thanked for providing an old reference. National Natural Science Foundation of China (No. 39870054) and the Chinese Academy of Sciences (KSCX2–1–06B) supported the research.
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Kang, Y., Zhang, ML. Study of pollen brush in selected species of Astragalus L. subgenus Pogonophace Bunge (Leguminosae). Plant Syst. Evol. 249, 1–8 (2004). https://doi.org/10.1007/s00606-004-0174-7
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DOI: https://doi.org/10.1007/s00606-004-0174-7