TRIPTERYGIUM, Celastraceae. A scandent shrub with large 
leaves similar to those of Celastrus. Creamy white flowers are 
borne in large hydrangea-like panicles and are followed by 
showy greenish-white three-winged fruits [nursery]. 
T. Regelii. Manch., Korea, Japan (Jn.-Jy.). 
TSUGA, Pinaceae. Hemlock. Handsome coniferous ever¬ 
greens, usually pyramidal when young. They grow best when 
protected from strong winds and when planted in fairly moist 
soil [6H, nursery]. 
T. canadensis. Common H.; N. S. to Ga. and Ala. 
T. c. atrovirens. 
T. c. densifolia. Redding H. 
T. c. Fremdi. 
T. c. gracilis. 
T. c. Hicksii. 
T. c. nana. 
T. c. pendula. 
T. caroliniana. Carolina H.; W. Va. to Ga. 
T. diversifolia. Japanese H.; Japan. 
T. Sieboldii. Japan. 
ULMUS, Ulmaceae. Elm. Medium and tall trees that will grow 
in a wide variety of soils, but best where the soil is reasonably 
moist. U. americana is most commonly used. It is a noble tree 
for providing shade and for avenue planting. The small-leaved 
U. parvifolia gives a pleasing effect and deserves a greater pop¬ 
ularity in this region [6D, gD, nursery]. 
U. americana. White E.; Newf. to Fla. to Rocky Mts. 
U. crassifolia. Cedar E.; Miss, to Ark. and Tex. 
U. fulva. Slippery E.; Que. to Fla. to Dak. and Tex. 
U. hollandica (U. glabra x carping olid). Dutch E. 
U. parvifolia. Chinese E.; China, Korea, and Japan. 
U. procera. English E.; Eng., W. and S. Eu. 
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