EVERGREEN TREES AND SHRUBS. 549 
purity of color which distin- Fig * 174- 
guishes a young hemlock tree, 
it assumes with age a sombre 
tone. This expression, how¬ 
ever, is rarely acquired before 
it is thirty to forty years old, 
and may readily be counter¬ 
acted by planting the Chinese 
wistaria, Virginia creeper, or 
trumpet creeper at its root. 
These will speedily intermin¬ 
gle the rich drapery of their • 
lighter-colored foliage, and fall 
like pendants from the highest boughs of the tree. 
The following are varieties of our native hemlock: 
Large-leaved Hemlock. A. c. macrophylla. —This is distin¬ 
guished in the nursery by larger leaves and denser growth than the 
common hemlock, but whether it will exhibit peculiarities to render 
it worthy a distinct name is a question to be determined by longer 
cultivation. 
The Slender-dwarf Hemlock. A. c. viicrophylla , or A. c. 
gracilis. —A small-leaved, slender-branched, very dwarf variety that 
looks thin and uninteresting when young, but may possibly have 
some value at maturity. 
Parsons’ Dwarf Hem- fig. I7S> 
lock. Abies c. Parsoni .— 
This is a very pretty dwarf, 
noticeable for the symmet¬ 
rical out-curve of its slender 
branches. 
Sargent’s Hemlock. 
Abies c. Sargenti. —This bids 
fair to be one of the most 
curious and interesting ad¬ 
ditions to our stock of gar- 
denesque evergreens—bear¬ 
ing the same relation to the 
