TRILISA ODORATISSIMA TWINLEAF. 71 



Trilisa odoratissima (Walt.) Cass. Aster family ( Asteraceae). 



Synonym. — Liatris odoratissima Michx. 



Vanilla-plant; deer's-tongue; vanilla-leaf; Carolina vanilla. 



Rather stout, native, perennial herb, 2 to 3 feet high, with fragrant leaves; in 

 pine barrens from Virginia south to Florida and Louisiana. 



Part used. — Leaves ( nonofficial ) . 

 Trillium erectum L. Lily-of-the-valley family (Convallariaceae). 



Wake-robin; ill-scented bethroot; birthroot; squawflower. 



Stout, native perennial, 8 to 16 inches high, growing in rich soil in damp, shady 

 woods from Canada south to Tennessee and Missouri. 



Part used. — Rhizome of this and of several other species of Trillium (nonofficial). 

 Triosteum perfoliatum L. Honeysuckle family ( Caprifoliaceae ) . 



Feverroot; horse-gentian; tinker' s-weed; white gentian; wild ipecac. 



Indigenous, perennial herb, 2 to 4 feet high; in rich soil in shady locations, Que- 

 bec to Minnesota, south to Alabama and Kansas. 



Part used. — Root (nonofficial) . 

 Triticum. See Agropyron repens. 

 Triticum repens Beauv. Same as Agropyron repens. 

 Trumpetleaf. See Sa.rraceniajiara. 

 Trumpet-milkweed. See Lactuca canadensis. 

 Trumpets. See Sarracenia flava. 

 Tsug-a canadensis (L. ) Carr. Pine family (Pinaceae). 



Synonym. — Abies canadensis Michx. 



Hemlock; hemlock-spruce; weeping spruce; tan bark-tree. 



Indigenous tree, about 75 feet in height, in forests from Canada south to Alabama 

 and Wisconsin. 



Parts used. — Bark and prepared resinous exudate (nonofficial). 

 Tulip-poplar. See Liriodendron tidipifera. 

 Tulip-tree. See Liriodendron tulipifera. 

 Tupelo gum. See Nyssa aquatica. 

 Tupelo, large. See Nyssa aquatica. 

 Tupelo, sour. See Nyssa ogeche. 

 Turkey-corn. See Bikukidla canadensis. 

 Turkey-pea. See Bikukidla canadensis. 

 Turnera aphrodisiaca Ward. Same as Turnera microphylla. 

 Turnera microphylla Desv. Turnera family (Turneraceae). 



Synonym. — Turnera aphrodisiaca Ward. 



Damiana. 



A small, shrubby plant, native of Lower California, Texas, and northern Mexico, 

 growing in dry soil. 



Part used. — Leaves (nonofficial). 

 Turnip, Indian. See Arisaema triphyllum. 

 Turnip, wild. See Arisaema triphyllum. 

 Turtle-head. See Chelone glabra. 

 Tussilago farfara L. Aster family (Asteraceae). 



Colt's-foot; cough wort; horsefoot; gingerroot. 



Perennial herb, 3 to 18 inches high, naturalized from Europe; in moist places 

 along roadsides and brooks, northeastern United States and Minnesota to 

 Canada. 



Parts used. — Leaves and root (nonofficial). 

 Twinleaf. See Jefferxonia diphylla. 



