Abstract
Heterostyly is clearly confirmed inAconogonon campanulatum. This distylous species is dimorphic for tepals, styles, stigma surface, stamens, pollen grain size, and pollen sexine ornamentation. The floral shape is campanulate and thrum flowers are slightly larger than pin flowers. Small solitary bees were observed as flower visitors and probably effected pollination. The possible evolution of dioecy via heterostyly within the genusAconogonon is discussed.
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Hong, SP. The dimorphic heterostyly inAconogonon campanulatum (Polygonaceae). Pl Syst Evol 176, 125–131 (1991). https://doi.org/10.1007/BF00937948
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DOI: https://doi.org/10.1007/BF00937948