_Leonurus cardiaca_ L. common motherwort _Lepidium_ L. pepperweed _campestre_ (L.) R. Br. field p. _densiflorum_ Schrad. peppergrass _perfoliatum_ L. clasping p. _ramosissimum_ Nels. manybranch p. _virginicum_ L. Virginia p. _Lesquerella_ S. Wats. bladderpod _gracilis_ (Hook.) S. Wats. [including _L. repanda_ (Nutt.) S. Wats.] spreading b. _ludoviciana_ (Nutt.) S. Wats. Louisiana b. _ovalifolia_ Rydb. ovalleaf b. _Leucelene ericoides_ (see _Aster arenosus_) _Liatris_ Schreb. gayfeather _angustifolia_ (Bush) Gaiser narrowleaf g. _kansana_ (Britt.) Rydb. Kansas g. _punctata_ Hook. dotted g. _pycnostachya_ Michx. thickspike g. _scariosa_ (L.) Willd. tall g. _squarrosa_ (L.) Michx. scaly g. _Linaria_ Mill. toadflax _canadensis_ (L.) Dum. var. _canadensis_ oldfield t. _canadensis_ var. _texana_ (Scheele) Pennell Texas t. _vulgaris_ Hill butter-and-eggs t. _Lindernia_ All. falsepimpernel _anagallidea_ (Michx.) Pennell clasping f. _dubia_ (L.) Pennell yellowseed f. _Linum_ L. flax _compactum_ A. Nels. _lewisii_ Pursh [_L. pratense_ (Norton) Small] lewis f. _rigidum_ Pursh stiffstem f. _sulcatum_ Riddell grooved f. _usitatissimum_ L. common f. _Lippia_ L. lippia _cuneifolia_ (Torr.) Steud. wedgeleaf fogfruit _lanceolata_ Michx. var. _recognita_ Fern. & Grisc. lanceleaf l. _Lithospermum_ L. gromwell _arvense_ L. corn g. _canescens_ (Michx.) Lehm. hoary g. _incisum_ Lehm. (_L. angustifolium_ Michx., & _L. linearifolium_ Goldie) narrowleaf g. _latifolium_ Michx. American g. _Lobelia_ L. lobelia _cardinalis_ L. cardinalflower _siphilitica_[44] L. bigblue l. _spicata_ Lam. palespike l. _splendens_ Willd. western cardinalflower _Lomatium_ Raf. lomatium _foeniculaceum_ (Nutt.) C. & R. [including _L. daucifolium_ (Nutt.) C. & R., & _L.