Botany of Illinois and Missouri. 259 
Catalpa syringeefolia Pur sh. 
Oxs. It is a subject of much dispute, whether this tree is 
@ native of the United States. Judging from the localities 
which I have visited at St. Louis, and elsewhere on the Mis- 
sissippi and Ohio rivers,-I am inclined to believe that it has 
been introduced. The existence of this tree, in the western 
sections of the United States, was one of the arguments ad- 
vanced by Jefferson and Volney, to prove that the climate 
there is much warmer, under similar parallels of latitude, 
than on the Atlantic coast. If, however, this tree is not a 
native, as is the opinion of Nuttall and other botanists, the 
argument is unfounded; for it will bear cultivation at Albany, 
and other places on the coast, far north of where it is found in 
the-west.f The few trees which I observed in the vicinity of 
St. Louis, were from 15 to 20 feet high, and when in flower 
were extremely ornamental. It flowers late in June. -— __ 
: Justicia pedunculosa Mich. 
Has. This plant, although rare, is found in the extreme 
parts of the United States. Elliott notices it in his Sketch ot 
the Botany of South Carolina and Georgia. It is found alsoin 
ereeks in the western parts of the state of New-York. In 
Missouri, I have observed it only on the inundated banks of 
the Merrimack river, 16 miles south of St. Louis. It is from 
2 to 21 feet high, and flowers in June. 
- Cunila glabella Mich. 
Ha In the rocky banks of the Mississippi, at St. Louis. 
—In similar situations on the St. Lawrence, Ohio, and Ten- 
nessee.— August. 
Oxs. Nuttall and some other botanists follow Persoon, in 
placing this plant under the genus Heproma ; but it differs from 
this last in its calyx, which is eA neo 10-striate, 
nearly equal and subulate. Dr. Torrey’s description of this 
species is minutely accurate, so faras relates to the western 
specimens which | possess. 
+ For further remarks on this subject, see a paper, by the author of 
these contributions, published in the New York Medical and Physical 
Jonrnal, Vol. I. p, 273. 
