176 Botany of Illinois and Missouri. 
Cicuta maculata L 2 
Has. — the banks of streams, in evenil parts of these 
states. Jun 
Erigenia bulbosa N wu tt. 
Has. Banks of streams near St. Louis: March 15th: 
Ulmus americana Lin. 
Ulmus fulva Mich. 
Has. Both these species are found upon the banks of 
streams throughout [linois and Missouri. The former, how- 
ever, is by far the most common. The variety with pendu- 
lous branches is to be met with on the Illinois. 
Celtis occidentalis L 7 
Has. Banks of Riviere des Peres, "5 miles west of St. 
Louis. April. 
PENTANDRIA. SuGune 
Viburnum Se Sass Lin 
Has. This species is found, i company with V, Oxijcoc- 
¢us, on the alluvions of the Mississippi near St. Louis. May: 
Rhus glabrum Lin. 
Rhus toxicodendron Lin. 
: Rhus aromaticum A it. 
Has. These three species are found in woods near St. 
Louis. June. Mr. Nuttall remarks that R. aromaticum is 
the only species to be met with in Upper Louisiana ;—but 
this is a mistake. 
Sambucus Se Lin. 
May. 
Has. Fields near St. Loui 
Staphylea trifolia Lin 
Hap. Banks of Riv. des Peres, April. This tree rises 
to a considerable height, - 
HEXANDRIA. MONOGYNIA. 
Tradescantia virginica Lin, 
Haz. Prairies and barrens near St. Louis, May: 
