Hypericum perforatum L Common St.-Johns-wort. 



Occasional in fields. 



Hypericum spathulatum (Spach) Steud. (H. prolificum of American 



authors) Shrubby St.-Johns-wort. 



Occasional along roadsides. 



Hypericum virginicum L. (Triadenum virginicum (L.) Raf.) 



Marsh St.-Johns-wort. 



Occasional in wet soil. 



CISTACEAE 



Helianthemum canadense (L.) Michx Canada frostwort. 



Dry hillsides. 



Lechea leggettii Britt. & Hollick. 

 Occasional in dry soil. 



Lechea racemulosa Michx. 

 Rare in dry soil. 



VIOLACEAE 



Viola emarginata (Nutt.) LeConte Violet. 



Occasional in rich woods. 



Viola fimbriatula Sm. 



Dry fields and banks. 



Viola kitaibeliana var. rafinesquii (Greene) Fern Johnny-jump-up. 



Fields and other open ground. 



Viola palmata L. (V. stoneana of the 1919 "Flora of the District of Colum- 

 bia.") 



Mount Hamilton and other wooded areas. 



Viola papilionacea Pursh 



Common everywhere. 



Viola pedata L Birdsfoot violet. 



Occasional in dry soil. 



Viola primulifolia L. 



Magnolia Swamp only, location 55. 



Viola sagittata Ait Arrowleaf violet. 



Fields and thin woods. 



Viola triloba Schwein. 

 Woods. 



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