_Ampelamus albidus_ (Nutt.) Britt. (_Gonolobus laevis_ of manuals, not Michx.) climbingmilkweed _Amsonia tabernaemontana_ Walt. willow amsonia _Anagallis arvensis_ L. scarlet pimpernel _Androsace occidentalis_ Pursh western rockjasmine _Anemone_ L. anemone _canadensis_ L. meadow a. _caroliniana_ Walt. Carolina a. _cylindrica_ Gray candle a. _decapetala_ Ard. tenpetal a. _virginiana_ L. Virginia a. _Antennaria_ Gaertn. pussytoes _neglecta_ Greene (including A. _campestris_ Rydb. & _A. longifolia_ Greene) field p. _plantaginifolia_ (L.) Richards (including _A. fallax_ Greene) plantainleaf p. _Anthemis_ L. camomile _cotula_ L. mayweed c. _tinctoria_ L. golden c. _Anychia_ (see _Paronychia_) _Aplopappus_ (see _Haplopappus_) _Apocynum_ L. dogbane _cannabinum_ L. hemp d. _sibiricum_ Jacq. prairie d. _Aquilegia_ L. columbine _Arabis_ L. rockcress _canadensis_ L. sickle pod _dentata_ (Torr.) T. & G. toothed r. _hirsuta_ (L.) Scop. var. _pycnocarpa_ (M. Hopkins) Rollins hairy r. _laevigata_ (Muhl.) Poir. smooth r. _virginica_ (L.) Poir. Virginia r. _Arctium minus_ (Hill) Bernh. smaller burdock _Arenaria_ L. sandwort _patula_ Michx. pitchers s. _serpyllifolia_ L. thymeleaf s. _stricta_ Michx. var. _texana_ Robins. Texas s. _Argemone_ L. pricklypoppy _polyanthemos_ (Fedde) G. Ownbey _squarrosa_ Greene (including _A. hispida_ Gray) hedgehog p. _Aristolochia tomentosa_ Sims dutchmanspipe _Armoracia lapathifolia_ Gilib. [_Rorippa armoracia_ (L.) Hitchc.] common horseradish _Artemisia_ L. sagewort; sagebrush _annua_ L. sweet sagewort _biennis_ Willd. biennial sagewort _campestris_ L. (_A. canadensis_ Michx.) prairie sagewort _dracunculus_ L. falsetarragan sagewort _filifolia_ Torr. sand sagebrush _ludoviciana_ Nutt. [including var. _gnaphalodes_ (Nutt.) T. & G.] Louisiana sagewort _vulgaris_ L.