In the recent phylogenetic classification of Ericaceae, a few
tribal as well as generic circumscriptions still remain ambiguous.
A systematic study of Ericaceae pollen would prove rewarding and
could clarify the currently confused generic limits. Qualitative
palynological characters were found to be taxonomically more
important and various palynological characters are important at
different taxonomic levels. Palynological features were found
significant in infrageneric classifications and to identify the
monophyly of taxa. A number of evolutionary trends in different
palynological features have been identified. Pollen survey revealed
some interesting discoveries: i) pollen tetrads without septa in
Ericaceae and other angiosperm families; ii) parallel evolution of
pseudomonad pollen tetrad development in two subfamilies; and iii)
pollenkitt ropes on the dried herbarium specimens. These findings
improve our understanding of Ericaceae by providing new insights on
the palynological features, their systematic significance and
evolutionary trends, should be especially useful to Plant
Taxonomist, Palaeobotanist, Palynologist, or anyone else who are
interested on Ericaceae and/or pollen.
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