▁is ▁pol lin ated ▁by ▁native ▁Meg ach ile ▁be es ▁and ▁native ▁b umble ▁be es ▁( i . e . ▁Bomb us ▁sp .). ▁ ▁The ▁fruit ▁is ▁a ▁small ▁bent ▁leg ume ▁pod . ▁ ▁Fire ▁e col ogy ▁This ▁plant , ▁like ▁many ▁chap ar ral ▁species , ▁is ▁fire - ada pt ed ▁and ▁requires ▁wild fire ▁or ▁other ▁disturb ance ▁to ▁propag ate . ▁The ▁bean like ▁se eds ▁require ▁scar ification ▁to ▁break ▁down ▁their ▁t ough ▁seed ▁co ats ▁before ▁they ▁can ▁germ inate . ▁The ▁se eds ▁persist ▁for ▁years ▁in ▁the ▁soil ▁until ▁fire ▁allows ▁them ▁to ▁spr out , ▁with ▁populations ▁of ▁the ▁plant ▁spring ing ▁up ▁in ▁an ▁area ▁that ▁has ▁been ▁recently ▁swe pt ▁by ▁wild fire . ▁ ▁It ▁is ▁a ▁pione er ▁species , ▁one ▁of ▁the ▁first ▁to ▁grow ▁in ▁a ▁dist urbed ▁area ▁and ▁one ▁that ▁is ▁soon ▁crow ded ▁out ▁by ▁plant ▁species ▁that ▁appear ▁later ▁in ▁e colog ical ▁succession . ▁Wild fire ▁supp ression ▁in ▁the ▁hills ▁and ▁mountains ▁surrounding ▁Los ▁Angeles ▁prevent ▁the ▁plant ▁from ▁reprodu cing . ▁ ▁References ▁ ▁External ▁links ▁ ▁Je pson ▁Man ual ▁Tre at ment : ▁Ast rag alus ▁bra un ton ii ▁US DA ▁Forest ▁Service ▁Fire ▁Effect s ▁Information ▁System — FE IS : ▁Plant ▁+ ▁habitat ▁e col ogy ▁The ▁Nature ▁Conserv ancy ▁Ast rag alus ▁bra un ton ii ▁— ▁U . C . ▁Ph oto ▁gallery ▁ ▁bra un ton ii