70 WILD MEDICINAL PLANTS OF THE UNITED STATES. 





Thimbles. See Digitalis purpurea. 

 Thimbleweed. See Rudbeckia laciniaia. 

 Thistle, bitter. See Crticus benedictns. 

 Thistle, blessed. See Gnicm benedictns. 

 Thistle, Canada. See Carduus arvensis. 



* 



Thistle, creeping. See Oarduvs arvensis. 

 Thistle, cursed. See Carduus arvenm. 

 Thistle, holy. See Cnicus bened'utus. 

 Thistle, St. Benedict's-. See Omcus benedirtus. 

 Thistle, spotted. See Onims bmedictus. 

 Thorn-apple. See Datura stramonium. 



Thoroughwort, See Eupatorium }>< rfoliatum. 

 Thousandleaf. See Achillea millefolium. 

 Throw wort. See Leonurm canHaca. 



Thuja occidentalis L. # Pine family (Pinaceae). 



Arbor-vitae; white cedar; yellow cedar. 



Indigenous, evergreen tree, 20 to 50 feet in height; in wet soil and along banks 

 of streams, Canada to North Carolina, Illinois, and Minnesota. Especially 

 abundant in Canada and the Northern States. 



Parts used. — Branchlets and leaves (nonofficial). 



Tiarella cordifolia L. Saxifrage family (Saxifragaceae). 



Coolwort; false miterwort; foamflower; gemfruit. 



Slender, indigenous perennial, 6 to 12 inches high, found in rich, moist woods. 

 Nova Scotia to ^Minnesota, south, especially along the mountains, to Georgia 



and Indiana. 

 Part used. — Herb (nonomcial). 



Tick weed. See Hedeoma pulegioides. 



Tilia americana L. Linden family (Tiliaceae). 



Synonym. — Tilia glabra Vent. 



Basswood; American linden; white wood. 



Large, indigenous forest tree, 60 to 125 feet in height; in rich woods, especially 

 along the niountains, from Canada to ( reorgia, west to Texas and Nebraska. 



Pari used. — Inflorescence of this and of other species of Tilia (nonofficial). 

 Tilia glabra Vent. Same as Tilia ameruxma. 

 Tinker's-weed. See Triodeum perfoliafum. 

 Tobacco, Indian. See Lobelia injkxku 



Toot hache- tree. See Fagara clavaJierculis and Xanthoxylurn americanum* 

 Touch-me-not, pale. See Impatiens aurea. 

 Touch-me-not, spotted. See Impatiens biftora. 



Toy wort. See Bursa bursa-padoris. 

 Tree-primrose. See Oenothera biennis. 



Trefoil, marsh-. See Menyanlhes hifnliafa. 

 Trefoil, shrubby. See Ptelea trifoHata. 

 Trefoil, sour. See Oxalis acetosella. 





Trifolium pratense L. 



Red clover; meadow T -clover; purple clover. 



( Fabaceae) 



Perennial herb, 6 inches to 2 feet high; common in fields and meadows through- 

 out the eastern United States; naturalized from Europe, and widely cultivated. 



Part u>< d, — Blossom 



