No. 20.] 



51 



Rudbeckia hirta, Linn. 



— laciniata, Linn. 

 Lepachys pinnata, T. fy Gr. 

 Helianthos giganteus, Linn. 



— strumosus, Linn. 



— decapetalus, Linn. 



— divaricatus, Linn. 



— tuberosus, Linn. 

 Actinomeris squarrosa, Nutt. 

 Coreopsis trichosperma, Michx. 



— rosea, Nutt. 

 Bidens frondosa, Linn. 



— connata, Muhl. 



— cernua, Linn. 



— chrysanthemoides, Michx 



— beckii, Torr. 



— bipinnata, Linn. 

 Helenium autumnale, Linn. 

 Maruta cotula, DC. 

 Anthemis arvensis, Linn. 

 Achillea millefolium, Linn. 

 Leucanthemum vulgare, Lam. 

 Tanacetum vulgare, Li?m. 

 Artemisia canadensis, Michx. 



— caudata, Michx. 



— vulgaris, Linn. 

 Gnaphalium decurrens, Ives. 



— polycephalum, Michx. 



— uliginosum, Linn. 



— purpureum, Linn. 

 Antennaria margaritacea, R. Br. 



— plantaginifolia, R. Br. 

 Filago germanica, Linn. 

 Erechtites hieracifolia, Raf. 

 Cacalia suaveolens, Linn. 



— atriplicifolia, Linn. 

 Senecio vulgaris, Linn. 



— aureus, Linn. 

 Arnica mollis, Hook. 

 Centaurea cyan us, Linn. 

 Cnicus benedictus, Linn. 

 Cirsium lanceolatum, Scop. 



— discolor, Spre?ig. 



— muticum, Michx. 



Cirsium pumilum, Spreng. 



— horridulum, Michx,. 



— arvense, Scop. 

 Lappa major, Gcert. 

 Krigia virginica, Willd. 

 Cynthia virginica, Don. 



{Troximon virginicum, Pers.) 

 Cichorium intybus, Linn. 

 Hieracium canadense, Michx. 



— scabrum, Michx. 



— gronovii, Linn. 



— venosum, Linn. 



— paniculatum, Linn. 

 Nabalus albus, Hook. 



— altissimus, Hook. 



— fraseri, DC. 



— nanus, DC. 



— boottii, DC. 

 Taraxacum dens-leonis, Desf. 

 Lactuca elongata, Muhl. 



var. 1. longifolia, T. fy Gr. 

 var. 2. sanguinea, T. §• Gr, 

 Mulgedium acuminatum, DC. 



— leucophasum, DC. 

 Sonchus oleraceus, Linn. 



— asper, Vill. 



— arvensis, Linn. 



LOBELIACE^E. 



Lobelia kalmii, Linn. 



— nuttallii, Rcem. fy SchvJt. 



— spicata, Lam. 



— dortmanna, Linn. 



— siphilitica, Linn. 



— cardinalis, Linn. 



— inflata, Linn. 



CAMPANULACE^). 



Campanula rotundifolia, Linn. 



— aparinoides, Pursh. 



— americana, Linn. 

 Specularia perfoliata, A. DC. 



