ADDITIONS TO THE FLORA OF WASHINGTON. 85 



33i«. Conium maculatum, L. Poison Hemlock. 



Rhode Island avenue, on a vacant lot near 17th street. June 17, 1883. 

 333a. Cicuta bulbifera, L. Water Hemlock. 



Alexandria Canal, opposite the Arlington estate. Dr. E. Foreman, 

 1882. 

 39i«. Eupatorium altissimum, L. 



Between the canal and the river, a short distance below Chain Bridge. 

 First reported by Dr. Vasey and Dr. Chas. Mohr at the end of 

 September, 1882. Collected there by myself Oct. 5, 1882. 

 436^. Aster ericoides, L., var. villosus, Gray. 

 Woodley Park, Sept. 17, 1882. 



457<;. Pluchea camphorata, DC. Salt-Marsh Fleabane. 



Marshall Hall, Md. Collected by Mr. O. M. Bryan in 1883; speci- 

 mens sent to Dr. Foreman, and by him shown to me. 



497«. Galinsoga parviflora, Cav. 



Fourteenth street near G, July 25, 1882. First seen by Dr. Chas. 

 Mohr. Since observed by myself on Sixteenth street. 



^o2a. Leucanthemum Parthenium, Godron. Feverfew. 



Park near B and Sixth streets. July 10, 1884. Canal road above George- 

 town, June 17, 1883. 



504^. Senecio vulgaris, L. Common Groundsel. 



Alexandria branch, B. & O. Railroad, a short distance above Union- 

 town, May 27, 1S83. 



536«. Tragopogon porrifolius, L. Common Salsify. Oyster-Plant. 



Nearly the same locality as the preceding. Dr. Foreman, May, 1883. 



543a. Campanula aparinoides, Pursh. Marsh Bellflower. 

 Rock Creek. Mr. M. S. Bebb, 1863. 



In preparing the " Flora," several species were admitted, which, 

 though not yet seen by the author or any of the recent collectors, 

 were yet vouched for by perfectly competent authorities who had 

 themselves found them in earlier years. In harmony with the rule 

 thus adopted, I now add, without hesitation, this species which Mr. 

 Bebb informs me, in a letter, that he was in the habit of collecting 

 in whilom days. From his description of the locality, I infer that 

 the spot on which the plant grew is now under cultivation. 



628a. Lycopsis arvensis, L. Small Bugloss. 



Near the Outlet Lock, Dr. Foreman, 1882. Collected there by myself 

 June 17, 1883. 



