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Pollen morphology of the Myrtaceae. Part 4: tribes Kanieae, Myrteae and Tristanieae

2012; CSIRO Publishing; Volume: 60; Issue: 3 Linguagem: Inglês

10.1071/bt11177

1444-9862

Andrew H. Thornhill, Geoff Hope, Lyn A. Craven, Michael D. Crisp,

Plant and Fungal Species Descriptions

Pollen morphology of 44 genera and 101 species from the Myrtaceae tribes Kanieae, Myrteae and Tristanieae was surveyed using scanning electron microscopy (SEM) and light microscopy (LM). Most Myrteae pollen were brevicolpate and granulate, which is unique within Myrtaceae, and these are most likely ancestral characters for this tribe. Two main pollen types were observed in tribe Kanieae, one form being with syncolpate colpi and a distinctive granulate exine, and the other with parasyncolpate colpi and a less ornamented exine. Genera Tristania and Thaleropia of tribe Tristanieae produce the smallest pollen in Myrtaceae, whereas Octamyrtus of tribe Myrteae produces the largest pollen observed in Myrtaceae.