Nineteen flavonoid aglycones and 18 flavonoid glycosides have been iso
lated and identified from flowers of A. lonaifolia. The dominance of f
lavone aglycones and the presence of 7-methoxyflavones, 6,7-dimethoxyf
lavones and 6,7-dimethoxyflavonols confirmed its advanced nature and i
ts proposed isolated position within the subgenus, in its own section
Eulongifolia.