194 STATE HORTICULTURAL SOCIETY 



CISTACE.E. ROCK-ROSE FAMILY. 



Helianthemum, Pers. 



2508. E. ma jus, (L.) B. S. P. Hoary Frostweed. 

 Quite common, on dry ridges. 



2509. H. canadense, (L.) Michx. Frost-wort. 

 Frequent in dry soil. 



Lecha, L. 



2510. L. minor, L. Thyme-leaved Pin-weed. 

 Not common. 



2511. L. villosa, Ell. Hairy Pin- weed. 

 Infrequent. 



2512. L. tenuifolia, Michx. Narrow-leaved Pin-weed. 

 Dry soil; infrequent. 



2513. L. striata, Leggett. Prairie Pin-weed. 

 Common on dry, sandy or rocky ridges. 



VIOLACE.E. VIOLET FAMILY. 



Viola, L. 



2514. V. palmata, L. Early Blue Violet. 

 Not common. 



2515. V. pedatifida, Don. Prairie Violet. 

 Common on prairies. 



2516. V. pedata, L. Bird's-foot Violet. 



On dry, sandy slopes and ridges. Not rare. 



2517. V. obliqua, Hill. Thin-leaved Wood-violet, 



2518. V. papilionacea, Pursh. Common Blue Violet. 

 Common, usually in thickets or along borders, some- 

 times in open places. 



2519. V. papilionacea domestica, (Bicknell) Pollard. 

 Cultivated soil, around dwellings. 



2520. V. cucullata, Ait. Marsh Blue Violet. 

 In wet meadows. 



2521. V. sagittata, Ait, Arrow-leaved Violet. 

 In meadows. 



2522. V. blanda, Willd. Sweet White Violet. 

 In wet places. 



2523. V. primulcefolia, L. Primrose-leaved Violet. 

 Damp ground. 



