PREFACE 
The following Catalo^ue of the hitherto known Plants of North America, 
native and naturalized, has been compiled from a number of observations made 
^ on living plants in Pennsylvania, and on dried specimens received from other 
parts of North America by the author. Some plants have been added from 
botanical books; to distinguish those as not existing in the herbarium of the 
author, they have been marked with a f» 
Of plants properly foreign, none are received in the Catalogue, if they are not, 
as it were, naturalized. They are distinguished by the mark C. Many more 
, plants might have been added, if the specimens received from other parts had 
been more perfect. The Cryptogamous plants were, -with very few exceptions, 
found in Pennsylvania. 
The Catalogue is firinted in Jive columna^ viz. 
1 For the Calyx or Empalement : 
2 For the Corolla or Blossom, its Form and Colour : 
3 For the Latin Systematic Name, distinguished by numbers for the Genus 
and Species, and the Signs~of Duration ; 
4 For the English Name ; the vulgar name, when known, is added in 
parenthesis : 
5 For the Place of Growth, and the Time of Flowering, chiefly in Penn- 
sylvania, which is two months later than in Georgia. 
Opposite to the name of the genus, the Fruit is mentioned. 
To give, as much as possible, multum in fiarvo^ many abbreviations are used, 
which will be easily understood by any botanist, as 
Cal. 3 ph. read Calyx triphyllus. 
3 part. tripartitus. 
3 f. trifidus. 
Gl. 2 valv. 1 fl. 2 fl. read Gluma, bivalvis, uniflora, biflora. 
Cor. 5 pet. 4 ph. 6 fid. read Corolla, pentapetala, tetraphylla, sexfida. 
•M. mascula, male. F. femina, female. 
fl. read floret. 
H. Hortus, found in gardens. 
C. cultus, cultivated, or Cicur, naturalized, not native. 
0 annual, bicnnial, 11 persisting, h frutescent. 
N. Ebor. read New York, N. Caes. read New Jersey, N. A. and 
N. Angi, read New England, Scc. 
cf. confer. 
