36 WILD MEDICINAL PLANTS OF THE UNITED STATES. 



Helianthemum canadense (L.) Michx. Rock-rose family (Cistaceae). 



Frostweed; frostwort; frost-plant; Canadian rock-rose. 



Native, perennial herb, about one foot in height; in dry, sandy soil, Maine to 

 Wisconsin, south to North Carolina and Kentucky. 



Part used. — Herb (nonofficial). 

 Hellebore, American. See Veratrum viride. 

 Hellebore, green. See -Veratrum viride. 

 Hellebore, swamp-. See Veratrum viride. 

 Helmetpod. See Jeffersonia diphylla. 

 Helonias dioica Pursh. Same as Chamaelirium luteum. 

 Hemlock. See Tsuga canadensis. 

 Hemlock, poison-. See Conium maculatum. 

 Hemlock, water-. See Cicuta maculata. 

 Hemlock-spruce. See Tsuga canadensis. 

 Hemp, black Indian. See'Apocynum cannabinum. 

 Hemp, Canadian. See Apocynum cannabinum. 

 Hemp, white Indian. See Asclepias incarnata. 

 Henbane. See Hyoscyamus niger. 

 Hepatica acuta (Pursh) Britton. Crowfoot family (Ranunculaceae). 



Synonym. — Hepatica acutiloba DC. 



Heart-liverleaf; sharp-lobed liverleaf ; liverwort. 



Perennial herb, 4 to 9 inches high, found in woods from Quebec and Ontario, 

 south to Georgia (but rare near the coast), west to Iowa and Minnesota. 



Part used. — Leaves (nonofficial). 

 Hepatica acutiloba DC. Same as Hepatica acuta. 

 Hepatica hepatica (L. ) Karst. Crowfoot family ( Ranunculaceae ) . 



Synonym. — Hepatica triloba Chaix. 



Eound-lobed liverleaf; kidney-liverleaf; liverwort. 



Perennial herb, 4 to 6 inches high; in woods from Nova Scotia to northern 

 Florida, west to Iowa and Missouri; less common than the heart-liverleaf. 



Part used. — Leaves (nonofficial). 

 Hepatica triloba Chaix. Same as Hepatica hepatica. 

 Heracleum lanatum Michx. Parsley family (Apiaceae). 



Masterwort; cow-parsnip; youth wort. 



Native, perennial herb, 3 to 5 feet high, growing in moist meadows and culti- 

 vated ground from Canada south to North Carolina, Utah, and California. 



Parts used. — Root, leaves, and seeds (nonofficial). 

 Hercules-club. See Fagara clava-her cutis. 

 Heuchera americana L. Saxifrage family ( Saxifragaceae ) . 



Alum-root; American sanicle. 



Native, perennial herb, 2 to 4 feet in height; in shady, rocky woodlands from 

 Connecticut to Minnesota, south to Alabama and Louisiana. 



Part used. — Root (nonofficial). 

 Hickory, shellbark-. See Hicoria ovata. 

 Hicoria ovata (Mill.) Britton. Walnut family (Jug-landaceae) . 



Synonym. — Carya alba Nutt. 



Shagbark, shellbark-hickory. 



Large, native tree, sometimes 120 feet in height; in rich soil from Quebec to 

 southern Ontario and Minnesota, south to Florida and Texas. 



Parts used. — Bark and leaves (nonofficial). 



