Abstract
Intrageneric relationships in the genusBrachycome were investigated by the comparison of nucleotide sequences of the chloroplast genematK. Evolutionary trends of some morphological and cytological characters were estimated based on thematK tree. The results indicate thatBrachycome is divided into four major clades, and circumscription of superspecies based primarily on fruit morphology is not fully supported. Fruit morphology has evolved in parallel from simple to complex structures in several lineages. The ancestral basic chromosome number isx = 9, and lower chromosome numbers are the products of several dysploid reductions fromn = 9 in two of four major clades ofBrachycome.
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Denda, T., Watanabe, K., Kosuge, K. et al. Molecular phylogeny ofBrachycome (Asteraceae). Pl Syst Evol 217, 299–311 (1999). https://doi.org/10.1007/BF00984372
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DOI: https://doi.org/10.1007/BF00984372