Rbodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol.19. ~ June, 1917. No. 222. 
A NEW SPECIES OF ERAGROSTIS OF THE OLD WORLD 
AND NORTH AMERICA. 
K. M. WIEGAND. 
WHILE collecting in the railroad yards at Ithaca New York during 
the summer of 1914 the writer noticed that the abundant material 
of Eragrostis pilosa growing between the ties was not all uniform. A 
casual examination showed that two strains, differing much in appear- 
ance, existed side by side. Each strain was abundant, but the coarser 
strain predominated in the proportion, roughly, of two to one. The 
material collected at this time was laid aside and did not come to 
notice again until recently. A more careful examination now shows 
that the two strains differ materially in several respects. 
After the resurrection of the material, it was taken, along with other 
problems, to the Gray Herbarium for study. There it was soon 
apparent that the coarser of the two strains was the common and 
widely distributed Æ. pilosa of Europe and America. After a long 
search, four specimens were found which matched the finer strain. 
Three of these were from Europe and one only from America. All 
three of the European specimens were indicated as weeds in gardens 
or between paving stones, one coming from Warsaw, one from Karls- 
ruhe and the third from Berlin. The American specimen was col- 
lected by M. L. Fernald along a roadside at Alstead, New Hampshire. 
Later, the Herbarium of the New York Botanical Garden was visited, 
and a search there made for the plant. Three more specimens were 
found; one from Japan, one from Mickleton, New Jersey, and the 
other from Lancaster, Pennsylvania. These few specimens, it will 
be seen, indicate a rather remarkable distribution, as the plant must 
