GENERA AND SPECIES 



Helianthus 



Helianthus attnuus . . 

 Helianthus d^capetalus . 

 Helianthus giganteus . . 

 Helianthus grosse-serratus 



Helianthus strumosus . 

 Helianthus tuber osus . 

 Heliopsis helianthoides 

 Silphium trifoliatum . 

 Bidens chrysanthemoides 

 Bidens frondosa . . . 

 Rudbeckia laciniata . . 

 Rudbeckia hirta . . . 

 Helenium autumnale . 

 Verbesina helianthoides 



LEGUMINOSEiE . 



Falcata comosa 



Composite Family 



MORACE^ .... 

 Humulus lupulus 



Orchidace^ . . . 



Spiranthes cernua 

 Gyrostachys cernua 

 Spiranthes gracilis 



Parnassiace^ . . 



Parnassia caroliniana 



Scrophulariace/e . . 



Gerardia purpurea . 



Gerardia maritima . 



Gerardia tenuifolia . 



PAGE 



9 

 9 



12 



14 



Wood Sunflower . . . 

 Great Sunflower . . . 

 Saw - Toothed Sun- 

 flower 14 



Wood Sunflower ... 12 



Jerusalem Artichoke . 15 



Ox-Eye 17 



Whorled Rosin- Weed . 21 



Brook Sunflower ... 24 



Beggar-Ticks .... 27 



Great Rudbeckia . . 29 



Black-Eyed Susan . . 31 



Sneeze weed 31 



Sunflower Crownbeard 11 



Pea Family . 

 Wild Peanut 



Mulberry Family 

 Wild Hop . . . 



Orchid Family . 

 Lady's Tresses 

 Lady's Tresses 

 Lady's Tresses 



90 

 90 



109 

 109 



107 

 107 

 107 

 108 



Grass of Parnassus 



Family 104 



Grass of Parnassus . .104 



Figwort Family 

 Purple Gerardia 

 Seaside Gerardia 

 Slender Gerardia 



94 

 94 

 96 



96 



Xll 



