[Vor. 3 
164 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
(Phil. Acad. Nat. Sci. Herb.); near Noble, 13 June, 1912, 
Long 7085 (Phil. Acad. Nat. Sci. Herb.) ; Layfayette, 2 June, 
1895, Keller, Jahn, also Uselma C. Smith 816 (Phil. Acad. Nat. 
Sci. Herb.) ; Layfayette, 5 June, 1897, Jahn (Phil. Acad. Nat. 
Sei. Herb.) ; serpentine barrens, Newtown, Delaware Co., 25 
June, 1901, Benj. H. Smith (Phil. Acad. Nat. Sei. Herb.) ; ser- 
pentine barrens, near Newtown Square, 12 June, 1899, Mac- 
Elwee 491, 505 (Phil. Acad. Nat. Sei. Herb.) ; Williamson, 4 
June, 1891, Crawford, 28 July, 1899, MacElwee 999, and 11 
June, 1911, Pennell 2764, 3641 (Phil. Acad. Nat. Sci. Herb.) ; 
Media, 30 May, 1896, Githens (Phil. Acad. Nat. Sci. Herb.) ; 
Elwyn, 8 June, 1890, Brinton, and 9 June, 1890, ex Herb. Ber- 
inger (Phil. Acad. Nat. Sci. Herb.) ; Wawa, 5 July, 1908, Pen- 
nell 15, and 9 June, 1896, Bartram (Phil. Acad. Nat. Sei. 
Herb.) ; Chester Heights, 23 June, 1907, Pennell (Phil. Acad. 
Nat. Sei. Herb.) ; Mineral Hill, 9 June, 1911, and 6 Sept., 1908, 
Pennell 2719, 610 (Phil. Acad. Nat. Sci. Herb.) ; Fawkes Run, 
30 May, 1909, and 10 June, 1911, Pennell 1365, 2742 (Phil. 
Acad. Nat. Sci. Herb.) ; Phoenixville, Chester Co., coll. of 1865, 
Martindale (Phil. Acad. Nat. Sci. Herb.) ; Sugartown Barrens, 
22 July, 1908, Pennell 293, and serpentine ridge, northwest 
of Sugartown, 30 May, 1909, Pennell 1379 (Phil. Acad. Nat. 
Sci. Herb.); serpentine ridge, Willistown, 28 May, 1904, 
Painter 673 (U.S. Nat. Herb. and Mo. Bot. Gard. Herb.) ; Wil- 
listown barrens, 24 May, 1908, Williamson (Phil. Acad. Nat. 
Sci. Herb.) ; serpentine ridge, Chester Co., June, 1882, Windle 
(U.S. Nat. Herb.) ; Westtown, 22 June, 1895, Crawford (Phil. 
Acad. Nat. Sci. Herb.) ; Fern Hill, 7 June, 1909, Long (Phil. 
Acad. Nat. Sci. Herb.) ; West Chester, coll. of 1828, Wm. 
Darlington (Phil. Acad. Nat. Sci. Herb.); West Chester, 
without date, David Townsend, and 29 May, 1909, Pennell 1344 
(Phil. Acad. Nat. Sci. Herb.) ; Seonnelltown, 29 July, 1908, 
Pennell 343 (Phil. Acad. Nat. Sci. Herb.) ; Nottingham Bar- 
rens, 22 May, 1912, Pennell & Long 8715, 7538 (Phil. Acad. 
Nat. Sei. Herb.) ; Cedar Barrens, Chester Co., 30 May, 1909, 
and 10 June, 1911, Pennell 1395, 2760 (Phil. Acad. Nat. Sci. 
Herb.) ; high above Muddy Run, 5 July, 1904, Crawford (Phil. 
