, ▁the ▁fra gr ant ▁flowers ▁are ▁actually ▁pale ▁l il ac ▁with ▁orange ▁cent res , ▁bor ne ▁as ▁sl ender ▁pan icles ▁ 2 0 – 4 5   cm ▁long ▁by ▁ 5   cm ▁wide ▁at ▁the ▁base ; ▁they ▁are ▁considered ▁inferior ▁to ▁those ▁of ▁B . ▁dav id ii ▁and ▁thus ▁the ▁plant ▁is ▁compar atively ▁rare ▁in ▁cultiv ation . ▁B . ▁alb if l ora ▁is ▁hex ap lo id : ▁ 2 n ▁= ▁ 1 1 4 . ▁ ▁Cult iv ation ▁The ▁shr ub ▁is ▁fully ▁hard y ▁in ▁the ▁UK , ▁and ▁features ▁in ▁the ▁N CC PG ▁National ▁Collection ▁of ▁Bud d le ja ▁held ▁by ▁the ▁Long stock ▁Park ▁Nur ser y , ▁near ▁Stock bridge . ▁Hard iness : ▁US DA ▁zones ▁ 6 – 9 . ▁ ▁References ▁ ▁Hill ier ▁& ▁S ons . ▁( 1 9 7 7 ). ▁Hill iers ' ▁Man ual ▁of ▁Tre es ▁and ▁S hr ubs , ▁ 4 th ▁Edition . ▁David ▁& ▁Charles , ▁Newton ▁Abb ot , ▁England . ▁. ▁ ▁Li , ▁P . ▁T . ▁& ▁Lee uw enberg , ▁A . ▁J . ▁M . ▁( 1 9 9 6 ). ▁Log ania ceae , ▁in ▁Wu , ▁Z . ▁& ▁R aven , ▁P . ▁( eds ) ▁Flora ▁of ▁China , ▁Vol . ▁ 1 5 . ▁Science ▁Press , ▁Be ij ing , ▁and ▁Missouri ▁Botan ical ▁Garden ▁Press , ▁St