IDENTIFICATION OF CYPRESSES 165 
its nearly allied affinity, no such lines appear. Or, 
again, in the case of two Thuyas of near affinity, the 
T. Plicata (or Gigantea) and the T. Occidentalis ; the 
former has white streaks on the under-side of leaflets, 
the latter not. 
The glands, the little swollen protuberances, or 
secretory vessels, situate on the end of the leaf and 
quite visible to the naked eye, are often a help to 
identification.. In such trees as the Thuya Plicata, 
or Gigantea, it will be noticed that the very evident 
presence of glands upon the Thuya Occidentalis is 
unseen upon the T. Plicata. All these traits in their 
characteristics are a mere generalizing of differences, 
and but a tuning of fiddles before the grand Devil’s 
Opera. The study of Cypresses calls for a close and 
minute attention upon the part of the tree lover, but 
a good general idea of “‘ what’s what:”’ and ‘‘ which 
is which” among their ranks can be obtained from» 
these sources suggested—namely (1) the Cones; 
(2) the shape of the ultimate branchlets, whether 
flat or tetragonal; (3) the branchlet systems “ in 
one plane,” or “not in one plane”; (4) the leaves, 
and in connection with them not forgetting the 
existence or non-existence of white streaks underneath, 
and the presence or absence of glands on the end of 
the leaf. 
CUPRESSINEZ TRIBE 
(OF THE SUB-DIVISION EU-CUPRESSI, oF THE SUB- 
TRIBE THUYINA‘) 
C. ToruLosa, Macrocarpa, SEMPERVIRENS 
Their sweetest shade 
A grove of cypress trees, 
SHAKESPEARE, 
C. Torutosa, so called presumably from the 
presence of glands on the leaves, so far as leaf appear- 
ance goes, exhibits a very perplexing likeness to some 
