1899] Collins, — To seaweed collectors 125 
Quincy and Weymouth we again meet the southern flora, Grinnellia 
and Dasya often appearing in summer in the greatest luxuriance. 
Goose Cove, Gloucester, appears to be the last important outpost of 
the southern forms, and only comparatively few species reach there. 
Nahant is the best known and most easily accessible part of the 
rocky shore near Boston. At the east end of Little Nahant, at Spout- 
ing Horn and at East Point, are abundant pools, similar to those at 
Newport, but with the northern flora. Swampscott and Marblehead 
Neck are similar, though hardly so well situated. All Cape Ann isa 
good region, but at Magnolia Beach many things come ashore, includ- 
ing perhaps the finest EuZhora cristata found anywhere ; and Pigeon 
Cove has an exposed rocky coast like that of Maine. North of Cape 
Ann are alternations of sandy stretches, relatively barren, and rocky 
points, usually good. 
Portland gives excellent opportunities for collecting; the outer 
sides of the islands, especially Peak's Island, are very fertile, as is also 
the Cape Elizabeth shore. As we go beyond Portland, there is a 
broader and broader zone of islands, while the mainland is so sheltered 
that many of the exposed shore plants are no longer to be found 
there, though abundant on the islands. Mount Desert, however, takes 
the full force of the sea, and from Seal Harbor to Bar Harbor, wherever 
the shore is accessible, good collecting can be done. The icy chill of the 
water here, even in summer, makes a contrast with the warm water of 
the Vineyard and Nantucket, and the contrast of the two floras is 
equally striking. Beyond Mount Desert very little collecting of algae has 
been done, but the flora is probably the same ; Eastport, the boundary, is 
better known, and everything there is much the same as at Mount Desert. 
In making up the list for the third part of this note, species of 
strictly local record, and of whose range more knowledge is desired, 
only species that might be noticed by the ordinary collector are in- 
cluded. There are many smaller species, of equal botanical interest, 
that need not be noted here. The following list gives, together with 
name of the species, the locality, the collectors on whose authority it is 
recorded, and occasionally some remark. 
Antithamnion cruciatum var. radicans J. Ag. Wood's Hole, W. A. 
Setchell. 
Arthrocladia villosa (Huds.) Duby. Falmouth, and the Vineyard 
shore opposite; not rare here in summer, but known on the American 
coast elsewhere only at North Carolina. 
