Abstract
The Australian orchid tribeThelymitreae, composed ofCalochilus, Epiblema, andThelymitra, is unique in theOrchidaceae because of the presence of a mitra or staminodal complex. Evidence from floral structure suggests thatEpiblema andThelymitra are sister genera and thatCalochilus is derived from aThelymitra ancestor. A “Gene Pool Vortex” model and a hypothetical phylogeny illustrate that introgressive hybridization, allopatry, and long distance dispersal have played a major role in the evolution of the tribe. Pollination and hybridization in the tribe are discussed with major emphasis on floral mimicry.
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Burns-Balogh, P., Bernhardt, P. Floral evolution and phylogeny in the tribeThelymitreae (Orchidaceae: Neottioideae). Pl Syst Evol 159, 19–47 (1988). https://doi.org/10.1007/BF00937424
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DOI: https://doi.org/10.1007/BF00937424