ibclogo XVI International Botanical Congess

Abstract Number: 5066
Session = 15.3.3


BASAL PAPILIONOIDEAE AND THEIR VARIOUS CONNECTIONS TO MONOPHYLETICPAPILIONOID GROUPS


Toby Pennington1, Matt Lavin2, Helen Ireland1,3, Bente Klitgaard3, Jill Preston1, 1Royal Botanic Garden Edinburgh, 2Montana State, 3Royal Botanic Gardens, Kew


Preliminary alignments of the chloroplast intron trnL for genera of basal tribes of Papilionoideae were analyzed together with more derived taxa. Swartzieae, Sophoreae and Dalbergieae are polyphyletic. Four genera of Swartzieae are sister to all other papilionoids. Of the remaining taxa, a large clade is congruent with a 50kb inversion in the chloroplast LSC region. Nine genera of Sophoreae and Swartzieae, and Dipteryxeae fall outside this group. Within it, many basal genera are unresolved or form small clades unlinked to derived tribes. However, one clade, supported by matK and ITS data, contains most Dalbergieae and Aeschynomeneae. Another clade with Sophoreae as basal elements contains some Millettieae and Thermopsideae and corresponds to the Genistoid alliance.

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