USING THE Krys xi 
which it is separated from the bark. Tracing the shrub is 
simple:—no. 1 to 140; to 141; to 142; to 143; to 144; to 145, 
where I stop at Tamarix. The species (p. 238) are not easily 
distinguished, but the color of the twigs makes me believe 
that this is the commonly cultivated Tamariz gallica. 
Several years ago a squirrel overlooked some sort of a 
nut that he had buried next a fence. It has grown into a 
small tree with sumach-like foliage, that must be either a 
hickory or black walnut or butternut. I want to know which. 
The twigs present several peculiarities: leaf-scars are alter- 
nate, raised above the level of the stem, shaped much as in 
the poison ivy, with 3 usually C-shaped or fragmented bundle- 
traces; over each leaf-scar are two scaly buds, one superposed 
above the other; and the twig, when split, shows a peculiar 
pith, not solid, but consisting of thin brown plates separating 
cavities or chambers. The key leads me from no. 1 to 140; 
to 150; to 172; to 202; to 203; to 219; to 224; to 225; to 227; 
‘to 255; to 256; to 259; to 260; where I decide that my tree is 
a Juglans. The characters of this genus (p. 16) satisfy me 
that this is right, and the short gray silky terminal bud and 
the absence of moustache-like velvety lines above the _leaf- 
sears show that it was a black walnut that the squirrel planted 
and forgot, here as along many other fences. 
A horticultural friend brings me a twig of one of the 
golden bells which survived the last severe winter better than 
the common Forsythia viridissima, and asks if it can be the 
hybrid (x F. intermedia) between that species and the hardier 
F. suspensa. The key (1 to 2; to 15; to 19; to 22; to 35; 
to 40; to 86; to 87; ta 92; to 97; to 104; to 124; to 126) 
convinces me that what he has is really a Forsythia. Turn- 
ing to p. 308 I find that the twig has the solid tissue at its 
nodes characteristic of F. suspensa (f. 3), but the thin plates 
or their remains between the nodes characteristic of F. viri- 
dissima (f. 1); for the hybrid x Forsythia intermedia (f. 2) 
is intermediate between the parent species in this as in other 
characters. 
