_tenuifolia_ Vahl slender g. _Geum_ L. avens _canadense_ Jacq. white a. _vernum_ (Raf.) T. & G. heartleaf a. _Gilia_ R. & P. gilia _laxiflora_ (Coult.) Osterh. irion g. _longiflora_ (Torr.) G. Don whiteflower g. _spicata_ Nutt. spike g. _Glechoma hederacea_ L. [_Nepeta h._ (L.) Trevisan] groundivy _Gnaphalium_ L. cudweed _obtusifolium_ L. fragrant c. _purpureum_ L. purple c. _Gonolobus_ (see _Ampelamus_) _Gossypium hirsutum_ L. upland cotton _Gratiola_ L. hedgehyssop _aurea_ Muhl. (_G. lutea_ Raf. in part) golden h. _virginiana_ L. Virginia h. _Grindelia_ Willd. gumweed _lanceolata_ Nutt. spinytooth g. _squarrosa_ (Pursh) Dunal curlycup g. _Gutierrezia_ Lag. snakeweed _dracunculoides_ (DC.) Blake [_Amphiachyris d._ (DC.) Nutt.] broomweed _sarothrae_ (Pursh) Britt. & Rusby (including _G. diversifolia_ Greene, & _G. linearis_ Rydb.) broom s. _Hackelia virginiana_ (L.) I. M. Johnston [_Lappula v._ (L.) Greene] Virginia stickseed _Haplopappus_ Endl. (including _Aplopappus_ Cass., _Sideranthus_ Sweet, & _Oonopsis_ Greene) goldenweed _ciliatus_ (Nutt.) DC. (_Prionopsis ciliata_ Nutt.) wax g. _divaricatus_ (Nutt.) Gray [_Isopappus d._ (Nutt.) T. & G.] slender g. _englemannii_ Z. (Gray) Hall [_Oonopsis e._ (Gray) Greene] englemann g. _phyllocephalus_ DC. (_Sideranthus annuus_ Rydb.) annual g. _spinulosus_ (Pursh) DC. [_Sideranthus s._ (Pursh) Sweet] ironplant _Hedeoma_ Pers. falsepennyroyal _drummondii_ Benth. drummond f. _hispida_ Pursh rough f. _pulegioides_ (L.) Pers. American f. _Helenium_ L. sneezeweed _autumnale_ L. common s. _nudiflorum_ Nutt. purplehead s. _tenuifolium_ Nutt. bitter s. _Helianthemum bicknellii_ Fern. sunrose _Helianthus_ L. sunflower _annuus_ L. (including _H. lenticularis_ Dougl.) common s. _grosseserratus_ Martens sawtooth s. _hirsutus_ Raf. [_H. leptocaulis_ (Wats.) Blake (including _H.