1910.] NATURAL SCIENCES OF PHILADELPHIA. 581 



40. Euphorbia maculata L. 

 Delaware. — Wawa. 



41. Euphorbia nutans Legg. 

 Delaware. — Lenni. 



42. Euphorbia corollata L. 

 Delaware. — Mineral Hill ; Lenni. 



43. Rhus typhina L. 

 Delaware . — Waw a . 



44. Celastrus scandens L. 

 Delaware. — Williamson. 



45. Impatiens biflora Walt. 

 Delaware.— Williamson. 



46. Viola palmata L. 

 Delaware. — Mineral Hill. 



47. Parsonsia petiolata (L.) Rnsby. 

 Chester. — Sugartown Barrens. 



48. Sanicula marylandica L. 

 Chester. — Unionville. 



40. Cornus alternifolia L. f. 



Chester.— 11 Willistown Barrens" (C. S. Williamson). 



50. Pyrola americana Sweet. 

 Chester. — Unionville. 



51. Pyrola elliptica Nutt. 



Delaware. — Williamson. 

 Chester. — Unionville. 



52. Chimaphila maculata (L.) Pursh. 

 Chester. — Unionville. 



53. Chimaphila umbellata (L.) Nutt. 

 Chester. — Unionville. 



54. Kalmia latifolia L. 

 Delaware. — Williamson. 



