▁pur ple ▁flowers , ▁each ▁ 2 ▁to ▁ 3 ▁cent im eters ▁long . ▁The ▁fruit ▁is ▁an ▁infl ated ▁leg ume ▁pod ▁up ▁to ▁ 3 ▁cent im eters ▁long . ▁It ▁is ▁usually ▁roughly ▁hair y ▁and ▁d ries ▁to ▁a ▁thick ▁pap ery ▁texture . ▁ ▁S elenium ▁Like ▁many ▁other ▁Ast rag alus ▁species , ▁this ▁plant ▁accum ul ates ▁selenium ▁from ▁the ▁soil . ▁It ▁has ▁also ▁been ▁shown ▁to ▁har bor ▁a ▁selenium - met abol izing ▁Bac ill us ▁species ▁in ▁its ▁seed ▁pod s . ▁ ▁References ▁ ▁External ▁links ▁Je pson ▁Man ual ▁Tre at ment ▁US DA ▁Pl ants ▁Profile ▁Ph oto ▁gallery ▁ ▁c rot al aria e ▁Category : Fl ora ▁of ▁Arizona ▁Category : Fl ora ▁of ▁North western ▁Mexico ▁Category : Fl ora ▁of ▁the ▁California ▁desert ▁regions ▁Category : Fl ora ▁of ▁the ▁Son or an ▁Des ert s <0x0A> </s> ▁The ▁Pale ont ological ▁and ▁Pale ob ot an ical ▁Museum ▁() ▁at ▁N ost imo ▁is ▁an ▁exhibition ▁of ▁foss ils ▁in ▁a ▁village ▁in ▁Western ▁Mac ed onia , ▁Greece . ▁The ▁village ▁of ▁N ost imo ▁is ▁ 2 5   km ▁from ▁the ▁city ▁of ▁K ast oria ▁and ▁ 1 4   km ▁from ▁the ▁town ▁of ▁Arg os ▁Or est iko . ▁ ▁Since ▁ 2 0 1 0 , ▁foss ils ▁and ▁artifact s ▁from ▁the ▁nearby ▁pet r ified ▁forest ▁have ▁been ▁displayed ▁in ▁the ▁village ▁junior ▁school