No. 14.] FLOWERING PLANTS AND FERNS. 355 



rocky woods or on ledges. May — June, Naturalized from 

 Europe. 



Medicinal like Veronica officinalis. 



Veronica Tournefortii C. C. Gmel. 

 Veronica Buxhaumii Tenore. 

 Veronica hyzantina BSP. 



Rare. Cultivated or waste ground: Oxford (Harger), 

 Litchfield (Miss E. H. Thompson). April — Nov. Adven- 

 tive from Europe. 



Veronica hederaefolia L. (ivy-leaved). 

 Ivy-leaved Speedwell. 



Rare. Norfolk, introduced along roadsides (Miss M. C. 

 Seymour). April — June. Fugitive from Europe. 



GERARDIA L. Gerardia. 



Gerardia pedicularia L. (like Pedicularis, the Lousewort). 

 Dasystoma pedicularia Benth. 

 Lousewort. 



Occasional. Dry sandy or rocky woods and fields. Aug. 

 — Sept. 



The plant is medicinal. 



Gerardia fiava L. (yellow). 

 Dasystoma flava Wood. 

 Downy Yellow or False Foxglove. 



Frequent. T)vy woods and thickets. July — Sept. 



Gerardia virginica (L.) BSP. 

 Gerardia quercifolia Pursh. 

 Dasystoma virginica Britton. 

 Oak-leaved or Smooth False Foxglove. 



Dry woods. Occasional, becoming frequent near the coast. 

 Aug. — Sept. 



This and the preceding species are root-parasitic. 



Gerardia purpurea L. (purple). 

 Purple Gerardia. 



Frequent along the coast in moist fields and borders of 

 marshes. Aug. — Oct. 



