9) Rhodora [May 
stead, June 7. Represented in my herbarium (No. 1651) from Nan- 
tucket, collected by W. H. Trumbull, Jr. 
Physcia hispida (Schreb, Fr.) Tuck., on rock, Coffin homestead, 
June 7. 
Physcia tribacea (Ach.) Tuck., on rock, Coffin homestead, June 7. 
Sticta pulmonaria (L.) Ach., on Quercus tinctoria, Tuckernuck, 
June 17. An interesting station for this rather northern lichen, as it 
is for Parmelia perlata recorded above. 
FURTHER NOTES ON THE FLORA OF DUXBURY, 
MASSACHUSETTS. 
Joun B. May, M.D. 
Tue article in Ruopora for January by Mr. Knowlton interested 
me greatly, following my residence of several years in the old South 
Shore town, and I trust that a few additional notes will not come 
amiss. I must confess, however, that I write, not as a botanist, but 
merely as an observer and lover of Nature. 
There is an interesting story connected with the naturalization of 
the English oak, Quercus Robur, mentioned by Mr. Knowlton. A 
century ago Duxbury was a famous port, the birthplace of fast 
clipper ships which sailed all the Seven Seas. One of the old master 
shipbuilders, noting the rapid disappearance of native timber used 
in his trade, started the conservation movement in Duxbury by 
planting groves of chestnut and English oak, bringing the latter 
from England in his own ships. Whether any of his seedlings survive 
today is doubtful, for none of the trees I have seen appear over fifty 
years old, but some of them lived long enough to start a flourishing 
second generation. 
Another Pilgrim to Duxbury, from the West this time, is the 
Umbrella-weed, Oxybaphus nyctageneus, which I found in 1907 as a 
few plants growing by the roadside, and which in 1911 flourished 
around barn-yards and ash-heaps, showing a marked increase and 
wide distribution. Melilotus alba also seemed to walk right along 
the edges of the roads, while a small field near the centre of the town 
