B41 
Atlas, Tab. xxv., and was found by Dr. Setchell at Waquoit Bay, 
Mass., on Zostera marina. 
The above mentioned species and varities, with the excep- 
tion of Ectocarpus Mitchelle, have never, so far as I know, been 
reported from the American coast; and as the published 
descriptions are almost in all foreign languages, and in works not 
generally accessible, I have added comments which I hope will 
enable students to recognize them. In the Flora of Middle- 
sex County, Mass., by L. L. Dame and F. S. Collins, I men- 
tioned two other species new to this country, Jonostroma 
Vahiit, J. Ag.and M. latissimum (Kiitz.) Wittr. The locality 
where the former was found having been destroyed, it is to be 
hoped some other will be found for it; the latter seems to be not 
uncommon in marshes near Boston, and has also been found at 
Bridgeport, Conn., by Mr Isaac Holden. In both places it seems 
to pass into JZ. guaternarium (Kiitz.) Desm.; possibly the two 
are not distinct species. 
Some Plants of Western Pennsylvania. 
By Apo.LprH Koenic, M.D. 
The following named plants were observed in flower during 
a halfday’s botanical excursion in a narrow valley and adjacent 
hill-sides, near Wildwood, on the Pittsburg and Western R. R., 
about fourteen miles north of Pittsburg, July 2nd, 1891. 
Anemone Pennsylvanica, L. Rare. 
Anemone Virginiana, L. Rather common. 
Thalictrum polygamum, Muhl. Common. 
Ranunculus acris, L. Common. 
Cimicifuga racemosa, (L.) Nutt. Very abundant. 
Nasturtium palustre (L.) DC. Apparently the typical form. In 
waste ground, 
Brassica nigra (L.) Koch, Common. 
Barbarea vulgaris, R. Br. Common. 
Brassica campestris, L. In neglected fields. 
Viola sagittata, Ait. Not rare. Inflorescence cleistogamous. 
Lychnis Githago (1..) Lam. One specimen only. In open woods, 
near railroad. 
Stellaria longifolia, Muhl. Common, 
