1911] Fernald,— A New Species of Scirpus 7 
Scirpus Longüi is quickly distinguished from all its allies by its 
reddish brown or castaneous achenes, all the other species — S. cy- 
perinus (L.) Kunth, S. Eriophorum Michx., S. pedicellatus Fernald, 
and S. atrocinctus Fernald — having whitish or cream-colored, at 
most buff, achenes. From S. atrocinctus, which it suggests in its 
blackish-based involucré, and blackish involucels and scales, it is 
further distinguished by the glutinous base of the involucre; the lon- 
ger usually blacker scales (those of S. atrocinctus being 1.5-2 mm. 
long); the longer often paler bristles which, as expressed by Mr. Long, 
give the inflorescence a " shaggier " appearance; the longer filaments; 
and the longer anthers, 1-2, rarely 2.5 mm. long (those of S. atro- 
cinctus being 0.3-0.5 mm. long); and by the style-branches 1-1.5 mm. 
long (in S. atrocinctus 0.5-0,75 mm. long). S. Longii is also a ‘more 
robust plant, with a larger inflorescence and longer spikelets than are 
ordinarily seen in S. atrocinctus, though in these characters it is ap- 
proached by the somewhat obscure S. atrocinctus, var. grandis Fernald. 
As stated by Messrs. Long and Stone S. Longi? matures somewhat 
earlier than S. atrocinctus, the New Jersey material of the former 
having mature achenes on June 18 (and presumably earlier); while S. 
atrocinctus at its southernmost stations, on the mountains of Penn- 
sylvania, is considerably later. In eastern Massachusetts, this differ- 
ence is also well shown, Mr. Forbes's material of S. Longi? collected 
on June 26 having the scales about half gone; while S. atrocinctus 
in the same state of development is collected in Middlesex County 
from July 15-20. 
The following extract from a letter from Mr. Long will be of inter- 
est to students of the New Jersey flora. 
“The most abundant general locality known to us is that from which 
Mr. Stone sent you material. I think he probably called it Sickler- 
ville [Camden Co., N. J.]. On my printed labels it (or rather the two 
stations) are called Andrews. We collected the Scirpus from two 
large stations n. e. of Andrews, along the Atlantic City R. R. (Williams- 
town Br.). I also have material from a third bog s. w. of Williams- 
town Junc., along the same railroad and in the same region as the 
other two..... In all these stations fruiting plants were extremely 
abundant, covering the bogs solidly over large areas to the exclusion 
of other species. But in our two other localities, though stools of 
apparently the same plant were common, only a single fruiting culm 
was found at each. Probably this was due merely to seasonal varia- 
tion in abundance of flowering. The one specimen is Stone 11594, 
with the label reading: ‘Bog along Wading River midway between 
