▁and ▁articles ▁into ▁foreign ▁languages . ▁ ▁During ▁the ▁D ust ▁Bowl ▁years , ▁Clement s ▁and ▁Freder ic ▁drove ▁around ▁the ▁Great ▁Pla ins ▁and ▁South west , ▁helping ▁to ▁encou rage ▁conservation ▁measures ▁to ▁counter ▁the ▁destruct ive ▁loss ▁of ▁farm ▁and ▁range ▁land . ▁ ▁Clement s ▁was ▁a ▁botan ical ▁artist ▁and ▁illustrated ▁a ▁number ▁of ▁their ▁joint ▁publications , ▁such ▁as ▁Rock y ▁Mountain ▁Flow ers ▁( 1 9 1 4 ) ▁and ▁Flow ers ▁of ▁Coast ▁and ▁Sierra ▁( 1 9 2 8 ), ▁as ▁well ▁as ▁solo ▁publications ▁by ▁Freder ic , ▁including ▁Plant ▁Su cc ession ▁( 1 9 1 6 , ▁which ▁she ▁also ▁helped ▁to ▁compile ), ▁Ada pt ation ▁and ▁Origin ▁in ▁the ▁Plant ▁World : ▁The ▁Ro le ▁of ▁Environment ▁in ▁E volution ▁( 1 9 3 9 ), ▁and ▁Dynam ics ▁of ▁Veg et ation ▁( 1 9 4 9 ). ▁In ▁ 1 9 1 6 , ▁the ▁color ▁pl ates ▁from ▁Rock y ▁Mountain ▁Flow ers ▁were ▁issued ▁as ▁a ▁stand - alone ▁guide book ▁to ▁ 1 7 5 ▁of ▁the ▁most ▁striking ▁flowers ▁of ▁the ▁area ▁under ▁the ▁title ▁Flow ers ▁of ▁Mountain ▁and ▁P lain . ▁The ▁novel ist ▁W illa ▁C ather , ▁an ▁ac ute ▁observer ▁of ▁nature ▁and ▁a ▁friend ▁of ▁the ▁Clement s es , ▁was ▁a ▁great ▁adm ir er ▁of ▁their ▁work . ▁In ▁a ▁ 1 9 2 1 ▁interview , ▁C ather ▁observed : ▁" There ▁is