212 MISC. PUBLICATION 401, U. S. DEPT. OF AGRICULTURE 



Ecological: includes (p. 11-13) tabular list of vascular plants. (In Watson 

 Township, Warren County.) 



Miller. John. Flora of Erie County, Pennsylvania. 47 p. port. 23 cm. 

 [Erie, 1923.] 



Annotated list of 1,184 species and 36 varieties of vascular plants. 



Pennell, P. W. Flora of the Conowingo Barrens of southeastern Pennsylvania. 

 Proc. Acad. Nat. Sci. Phila. 62: 541-584. 1910-11.— Further notes ... 1. c. 

 64: 520-539. 1913. 



Climate, physiography, soil, composition of flora ; annotated list of 217 vascu- 

 lar plants, with supplementary list of "occasional species" (77) and "promi- 

 nent introduced species" (7). The area covered is the "Conowingo or Serpen- 

 tine Barrens in Chester and Delaware counties." The supplement contains 

 also records from the serpentine barrens of Centerville, New Castle County, 

 Del. 



Shafer, J. A. A preliminary list of the vascular flora of Allegheny County, 

 Pennsylvania. Annals Carnegie Mus. (Pittsburgh) 1: 14-127. 1901. 



List of vascular plants, with few annotations. — See also Jennings, 0. E. 

 Additions and corrections ... 1. c. 3: 473-479. 1906, the latter bringing the 

 total to about 991 species. 



Small, J. K., and Carter, J. J. Flora of Lancaster County: being descriptions 

 of the seed-plants growing naturally in Lancaster County, Pennsylvania, xvi, 

 336 p. 23.5 cm. New York, 1913. 



Physiography, etc. ; descriptive flora of spermatophytes, with keys. 



Smith, A. H. On colonies of plants observed near Philadelphia. Proc. Acad. 

 Nat. Sci. Phila. [19] : 15-24. 1867. 



Annotated list of 106 vascular plants occurring on waste ground along the 

 Delaware River in Pennsylvania and New Jersey, in the vicinity of Philadelphia. — 

 See also Burk, Isaac. List of plants recently collected on ships' ballast in the 

 neighborhood of Philadelphia. 1. c. 29: 105-109. 1877.— Also Martindale, I. C. 

 More about ballast plants. Bot. Gaz. 2: 127-128. 1877. 



Twining, Alfred. Flora of northeastern Pennsylvania. 89 p. (inch port.). 

 23 cm. Scranton, Pa., 1917. 



Annotated list of 1,534 vascular plants from the vicinity of the Lackawanna 

 and Wyoming valleys. Replaces "A catalogue of the flowering plants and 

 vascular cryptogams found in and near Lackawanna and Wyoming valleys," 

 by W. R. Dudley and C. O. Thurston. 1892, and "Additions. . . ." 1895. 



RHODE ISLAND 



General 



Providence Franklin Society. The ferns, fern allies and flowering plants of 

 Rhode Island. A revision of the first fifty-eight pages of James L. Bennett's 

 "Plants of Rhode Island" published by the Providence Franklin Society in 1888. 

 78 p. Providence, 1920. 



Unannotated list, with reference to authority for inclusion of each species ; 

 bibliography. Unreliable; see critical review by M. L. Fernald, Rhodora 24: 

 96-100. 1922. 



Local 



Bailey, W. W. Notes on the flora of Block Island. Bui. Torrey Club 20: 221- 

 239. 1893. 



Soil, general features of flora ; mostly unannotated list of 294 vascular plants 

 collected by the author and J. F. Collins in 1892. — For additions see Hollick, A. 

 Annals N. Y. Acad. Sci. 11: 63^70. 1898, also Torreya 6: 190. 1906. (New- 

 port County.) 



Davis, L. D. The trees and plants of Conanicut Island. Proc. Newport Nat. 

 Hist. Soc. 8: 32^2. 1892. 



General features of flora ; unannotated list of angiosperms, the families ar- 

 ranged in a quite unintelligible order. (Newport County, in Narragansett Bay.) 



Reynolds, E. S. The flora of the Great Swamp of Rhode Island. Rhodora 9: 

 117-122. 1907. 



Topography, botanical explorations, etc. ; partial list of vascular plants coL 

 lected. (Washington County.) 



