) ▁B .   ser . ▁Sp ic ig era e ▁( 3 ▁sub series , ▁ 7 ▁species , ▁ 6 ▁vari eties ) ▁B .   ser . ▁Qu erc inae ▁( 2 ▁species ) ▁B .   ser . ▁D ry android es ▁( 1 ▁species ) ▁B .   ser . ▁Ab iet inae ▁( 4 ▁sub species , ▁ 1 4 ▁species , ▁ 8 ▁sub species ) ▁Th iele ▁and ▁Lad iges ' ▁arrangement ▁remained ▁current ▁only ▁until ▁ 1 9 9 9 , ▁when ▁George ' s ▁treatment ▁of ▁the ▁genus ▁for ▁the ▁Flora ▁of ▁Australia ▁series ▁of ▁mon ograph s ▁was ▁published . ▁This ▁was ▁essentially ▁a ▁revision ▁of ▁George ' s ▁ 1 9 8 1 ▁arrangement , ▁which ▁took ▁into ▁account ▁some ▁of ▁Th iele ▁and ▁Lad iges ' ▁data , ▁but ▁rejected ▁their ▁overall ▁arrangement , ▁including ▁B .   sub ser . ▁C rat ist yl is . ▁ ▁Rec ent ▁develop ments ▁ ▁Since ▁ 1 9 9 8 , ▁Austin ▁M ast ▁has ▁been ▁publishing ▁results ▁of ▁on going ▁cl ad istic ▁anal ys es ▁of ▁DNA ▁sequence ▁data ▁for ▁the ▁sub tri be ▁Bank si inae . ▁His ▁anal ys es ▁suggest ▁a ▁ph y log eny ▁that ▁is ▁rather ▁different ▁from ▁previous ▁tax onom ic ▁arrang ements . ▁B .   sub ser . ▁C rat ist yl is ▁appears ▁to ▁be ▁poly phy let ic : ▁B .   b ax ter i ▁( B ax