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rainfall averaging ten inches during the spring, and fifteen inches 
during the summer months. 
In Alabama and Eastern Mississippi, with a precipitation 
on the average of fifteen and of twenty inches respectively during 
the same seasons, the foliage is rich and abundant with large, 
rounded leaflets, whereas the Texan specimens, from a region 
with a precipitation similar to that of Florida, during the same 
periods, approach in their foliage the plants from that section. 
In view of these facts, the position I have taken in my re- 
marks made before the Botanical Club of the American Associa- 
tion for the Advancement of Science, at the Washington meet- 
ing in 1891, in regard to the specific character of the specimens 
of Clematis from the Eastern Gulf States has to be abandoned. 
As worthy of record I would allude to the occurrence of 
Quercus heterophylla in Alabama. This tree, unknown to me, 
Was pointed out by my companion, Mr. Sudworth, in our ex- 
Plorations of the forests of the southern banks of the Tennessee 
River in Morgan County. Inall its characters, the tree presented 
not the slightest deviation from the forms found on the Atlantic 
slope. From the abundance of cups scattered below the tree, it 
is evident that it fruits freely and, as in other localities cited, it 
is found associated with Quercus Phellos and Q. rubra. This as- 
sociation, however, cannot be taken as a proof of its being a 
hybrid; the constancy of its characters under varying conditions 
of soil and climate, and its fecundity are the strongest proof of its 
Specific value. : 
Mr. Sudworth has found this tree near Ann Arbor, Michigan, 
extending thus its geographical range to over about eight de- 
grees of latitude, and spreading from the coast far into the 
Interior, 
The Rediscovery of Juncus Cooperi. 
In the year 1868 Dr. George Engelmann published a descrip- 
tion of a new Juncus from the southwestern United States, giving 
it the name J. Cooperi.* A single specimen without rootstock Ss 
leaves had been collected by Dr. J. G. Cooper in 1861, in t : 
Vicinity of Camp Cady, a now abandoned military post situated 
*Trans. St, Louis Acad. Sci. ii. 590 (1868.) 
