). ▁Altern ative ▁sp lic ing ▁results ▁in ▁multiple ▁trans cript ▁variants . ▁ ▁C lin ical ▁significance ▁▁ ▁Mut ations ▁in ▁A 2 ML 1 ▁are ▁associated ▁to ▁No on an - like ▁synd rome . ▁ ▁References ▁ ▁External ▁links ▁ ▁Further ▁reading ▁▁▁▁▁▁▁▁▁ ▁Category : Pro te ase ▁in hib itors <0x0A> </s> ▁Marian th us ▁er ub esc ens , ▁commonly ▁known ▁as ▁red ▁bill ard iera , ▁is ▁a ▁tw ining ▁shr ub ▁or ▁clim ber ▁of ▁the ▁pitt os por um ▁family , ▁Pitt os por aceae . ▁The ▁species ▁is ▁en demic ▁to ▁the ▁south - west ▁of ▁Western ▁Australia . ▁It ▁has ▁gl oss y ▁lance olate ▁leaves ▁that ▁are ▁ 2 0 ▁to ▁ 3 0   mm ▁long . ▁ ▁Red ▁tub ular ▁flowers ▁appear ▁in ▁spring ▁and ▁sp or ad ically ▁throughout ▁the ▁year . ▁ ▁The ▁species ▁was ▁ ▁formally ▁described ▁in ▁ 1 8 3 9 ▁based ▁on ▁plant ▁material ▁collected ▁in ▁the ▁Sw an ▁River ▁Col ony . ▁The ▁species ▁was ▁transferred ▁to ▁the ▁genus ▁Bill ard iera ▁in ▁ 1 9 7 2 ▁ ▁but ▁this ▁was ▁revers ed ▁in ▁ 2 0 0 4 . ▁ ▁References ▁ ▁Category : Ap ial es ▁of ▁Australia ▁Category : P itt os por aceae ▁Category : Fl ora ▁of ▁Western ▁Australia <0x0A> </s> ▁Ex pon ential ▁may ▁refer ▁to ▁any ▁of ▁several ▁mathematical ▁topics ▁related ▁to ▁exponent iation , ▁including : ▁Ex pon ential ▁function , ▁also : ▁Matrix