580 AUTHENTIC HISTORY 



FLOEA. 



An enumeration of indigenous and naturalized Plants found growing in the County of 



Lancaster, Pennsylvania. 



By Thos. C. Porter, 

 Professor of Botany and Zoology in Lafayette College. 



The following catalogue is based upon the results of explorations made during a resi- 

 dence in the city of Lancaster between the years 1853 and 1866. All the plants con- 

 tained in it were seen and examined by the author, with the single exception of Quercus 

 phellos, L., and specimens of the rarer species, about which there might beany question, 

 are at hand for reference in his own herbarium and in the herbaria of the Linnaean 

 Society and the State Normal School at Millersville. 



In the annals of American Botany, Lancaster county is classic ground. It was the 

 home of the distingiiished Mulilenberg, who probably collected on her soil, at the be- 

 ginning of the century, many of the species first described by him and by the German 

 Botanist Willdenou, with whom he carried on a long and active correspondence. He 

 left behind him in manuscript a Flora Lancastriensis, which unfortunately has either 

 been lost, or is no longer accessible. 



The only list of the plants of the county heretofore published is the one in Rupp's 

 History. Its preface shows that it was compiled by the late Dr. William Darlington, 

 of West Chester. But, because it is a compilation, and because no fewer than 87 of its 

 species are inserted on the strength of mere conjecture, it was thought best not to use it 

 in the preparation of the present catalogue. Its 61 undetected phaenogams and vascular 

 cryptogams were therefore ruled out — a loss more than compensated by the addition of 

 225, not including marked varieties. 



The aim of the author has been to lay a good foundation upon which any one who 

 may wish to continue the work hereafter can build with confidence, for the field is by no 

 means exhausted. Much remains to be done, and new discoveries may be looked for, 

 especially in the unexplored northern and eastern portions of the county. On the 

 mosses and liverworts, little attention was bestowed, and by further search their numbers 

 might be largely increased. 



In the arrangement and nomenclatm-e, the fifth edition of Dr. Gray's Manual of the 

 Botany of the Northern United States, (1868), has been followed. Naturalized and 

 adventive plants are indicated by italics. For the rarer species localities are given and 

 the names of the persons by whom they were communicated. 



Easton, Pa., March 12, 1869. 



CATALOGUE — SUMMARY OF CONTENTS. 



Phaenogams. Indig. Nat. Total. 



Exogens, 694 147 841 



Endogens, 293 35 328 



Cryptogams. 



Acrogens, 47 47 



Anophytes, 152 152 



Whole No. of Species and Varieties, 1368 



SERIES I. 

 PHAENOGAMOUS, OR FLOWERING PLANTS. 

 CLASS I. DICOTYLEDONOUS, OR virginiana i. (Virgin's Bower.) 

 EXOGENOUS PLANTS. Anemone i. 



-r» virjjiniana L. 



RANUNCULACE^. ", . TTi^a^^ra 



pennsylvamca L. Liberty Square, J. S- 



Clematis L. Parry; Little Conestoga. 



