244 DAVENPORT ACADEMY OF SCIENCES. 



Veronica, L. Speedwell. 



577. V. Virginica, L. Culver's-root. 

 Prairies and woods ; common. 



578. V. scutellata, L. Marsh Speedwell. 

 Low wet ground at Noels, Scott county. 



579. F. peregrina, L. Neckweed. Purslane Speedwell. 

 Damp ground ; common. 



580. V. arvensis, L. Corn Speedwell. 

 Dry soil, cpen woods; infrequent. 



Seymeria, Pursh. 



581. S. macrophylla, Nutt. Mullein Foxglove. 



Moist place near West Davenport ; Cedar River region. 

 Gerardia, L. 



582. G. grandi/lora, Benth. 

 Open woods ; infrequent. 



583. G. auriculala, Michx. 



Low grounds and prairies ; infrequent. 



584. G. aspera, Dougl. 



Cedar River region ; infrequent. 



585. G. purpurea, L. Purple Gerardia. 

 Low grounds ; infrequent. 



586. G. tenuifolia, Vahl. Slender Gerardia. 

 Low or dry ground ; frequent. 



587. G. tenuifolia, var. asperula, Gray. 

 Dry hill at Wild Cat Den. 



Castilleia, Mutis. 



588. C. coccinea, Spreng. Scarlet-painted-Cup. 



Dry sterile hills and sandy prairies ; becoming scarce. 

 Pedicularis, Tourn. Lousewort. 



589. P. Canadensis, L. Wood Betony. 



Damp hillsides, open woods, etc.; frequent. 



590. P. lanceolata, Michx. 



Wet places, Cedar River region, Allen's Grove, Donahue. 



OROBANCHACE^E. 



Aphyllon, Mitchell. Naked Broom-rape. 



591. A. uniflorum, Gray. One-flowered Cancer- root. 

 Richman's Woods near Muscatine. One plant, May, 1878, 



